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What is a Shunt Trip Breaker and How Does It Work?

Written by  Edwin Jones  / Fact checked by  Andrew Wright

what is a shunt trip breaker

What is a shunt trip breaker? Does it add protection to your electrical system?

The shunt trip breaker is a combination of the shunt trip accessory and the main circuit breaker. This installs on the main breaker to add protection to your electrical system. This adds security to your electrical system as it manually or automatically cuts the electric supply in your circuit.

This accessory can help prevent short circuits and avoid electrical damage should a disaster occur in your home.

Let me tell you more about the shunt trip breaker to help you decide if you need additional protection for your electrical system.

Table of Contents

What is Shunt Trip Breaker and How Does It Work

Where are shunt trip breakers most used, how to install a shunt trip accessory to the breaker.

shunt-trip-relay

You should know that shunt trip breakers are different from GFCI circuit breakers.

The GFCI circuit breaker contains one big white tail wire for neutral connections only. It cannot be connected to any control package because the GFCI circuit breaker is solely designed to detect a sudden electrical surge. It has no other purpose but to cut power in case of a short.

Meanwhile, the shunt trip breaker wiring comprises two wires. One connected to the ground, and another to a control system. The control system can be connected to a sensor or to a manual switch. When activated, the shunt trip accessory will cause the main breaker to trip.

For example, if you install a shunt trip with a smoke detector, it will activate and cut off the power should the smoke sensor trigger. It can also be installed with a remote switch , allowing you to trip your breaker manually.

It is crucial to know the difference between a regular circuit breaker and a circuit breaker installed with shunt trip accessories.

shunt-trip-definition

The shunt trip definition means that it is a way to cut off electrical power through other sensors, not just via thermal activation. Since this is an optional accessory for a circuit breaker, it is not required for a home electrical system.

However, it is recommended for added safety. This is especially true if you’re working with industrial machinery. Furthermore, you can use it as a manual emergency switch to shut down your main breaker.

Before installing a shunt trip, consider its cost and your existing system. You may need to change the breaker panel  and circuit breakers, especially if it is not compatible with shunt trips. You may also need a new line to connect the remote emergency switch to your breaker box.

Generally, most commercial kitchens, elevators, and offices have this shunt trip breaker because it is required. Commercial kitchens use this device in compliance with ANSI/ASME CSD-1, while elevators and escalators comply with ASME A17.1. These codes refer to the controls and safety standards provided by ASME’s.

This question is a topic of discussion among Reddit members as well. Join the conversation here:

Found at a dominos by u/Guilty_Sympathy_496 in electricians

Mostly, installing a shunt trip relay requires that the breaker and the shunt be from the same maker. Also, not all breaker models are compatible with this accessory.

Once you’re sure that your system can take a shunt trip accessory, installation is pretty much straightforward. You can watch this video by Aaron CBIONE for some tutorials.

Note: Every circuit breaker comes with different instructions. It would depend on the brand and model of the breaker .

However, the critical part of every installation is that you need to connect the shunt to your sensor. You may need a shunt trip breaker diagram as a reference to ensure correct installation.

Also, check the brand and model of your breaker before proceeding with the installation. Some makers only allow a factory install of the shunt trip and other accessories. DIY installation may void the warranty of your breakers. It’s best to read up on the manual or consult an electrical professional before making any changes.

What is a shunt trip breaker? The shunt trip is an optional accessory for a circuit breaker for added protection to your system. It is designed to connect to a secondary sensor. It will trip the breaker automatically if the sensor is triggered. It can also be activated via a remote switch that you can install.

Do you think that a circuit breaker is enough to protect your investment? Or do you want an additional layer of protection for your electrical circuit? If you’re not decided yet, reach out to me in the comments section below, and I will be happy to help you.

Andrew-Wright

I am Andrew Wright. With 8 years of experience designing, installing, and maintaining electrical power systems. I love my job, and I have always wanted to offer others the necessary help so they can take care of their houses.

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What Is A Shunt Trip Breaker & How Does It Works?

What Is A Shunt Trip Breaker

Have you ever heard about this kind of breaker? And “what a shunt trip breaker is” usually appears when you hear about this for the first time.

Keep this article to get the best answer to the question above, its primary use, and when it is required.

Table of Contents

What Is A Shunt Trip Circuit Breaker?

A circuit breaker “trips” once it detects a problem, cutting off power to the outlet or appliance in question and protecting the wire from burning.

An optional attachment to any circuit breaker, a shunt trip breaker allows for the breaker to be shut off remotely at any moment or immediately in the event of a power excess. Damage to or injury from equipment may be avoided in a crisis if this is in place.

There are two distinct categories for shunt trip breakers, automatic and manual. The breaker may be turned off from the exterior of the building through a remote button using manual switches. Conversely, mechanical switches interrupt power flow when they identify a surge coming from the grid.

How Does A Shunt Trip Breaker Work?

How Does A Shunt Trip Breaker Work

Electrical impulses often pass through your circuit breaker without being altered. Nevertheless, if these currents reach unsafe levels, an additional surge of energy will charge a magnet located just below the primary breaker switch. This will cause the switch to trip, resulting in the power being cut off.

Adding a shunt trip breaker provides an additional method to charge the magnets and trip the switches, which makes it possible to turn off the electricity remotely or automatically.

Some of the shunt trips are powered by an external source. When a power surge occurs at this source, a notification is delivered from the shunt trip towards the breaker, which causes the breaker to stop the power automatically.

Connecting to a remote switch that is situated outside the building may also be accomplished with the help of a shunt trip. The current is cut off when the user clicks a button on that switch, which causes an electrical surge to be sent via the shunt trip circuit.

Even though shunt trip breakers are optional in residences, many people put them there out of caution. But, these devices are also often used in businesses that use expensive industrial machinery or electronic wiring that are susceptible to being destroyed in the event of a power surge.

Why Are Shunt Trip Breakers Important?

In an unexpected power outage, you may give yourself an additional level of peace of mind by installing a shunt trip breaker in your house. Because of this, you will not risk injuring yourself or creating any electrical harm.

If there is a fire, one of the most common uses for shunt trips is to switch off any electrical equipment that could be present. For example, when a shunt trip is connected to a fire detection system, the power may be immediately turned off once the smoke detector senses a fire. This allows for eliminating any potential electrical hazards that the fire may cause.

If your smoke detector is connected to your home’s sprinkler system, installing a shunt trip is essential. This device might turn off your power as quickly as the smoke detector triggers the sprinkler, reducing the real damage to your electronic devices.

Where Do People Most Often Use Shunt Trip Breakers?

Shunt trips reduce power through additional sensors, not simply heat activation. For a household electrical system, this circuit breaker attachment is optional.

However, it’s advised for safety. Industrial equipment makes this particularly true. It may also shut off your main breaker manually in an emergency.

Before beginning the implementation of a shunt trip, take into consideration the associated costs and the system. It is possible that the breaker panel and the circuit breakers will need to be replaced if shunt trips are not supported. It’s also possible that a new cable will be required to connect the remote emergency switch to the breaker box.

In most business kitchens, elevators, and offices, shunt trip breakers are an essential safety device. ASME A17.1 is the standard that must be adhered to for elevators and escalators, while ANSI/ASME CSD-1 is the standard that must be attached to commercial kitchens. ASME regulations mandate these controls and safety standards.

Installing A Shunt Trip Accessory to a Breaker

Shunt trip relays can only be installed with breakers and shunts made by the same company. Plus, not all circuit-breaker models can use this part.

Adding a shunt trip connection is easy after establishing that your system is functioning. Watch this video from Schneider Electric for some guidelines:

Each circuit breaker has its instructions, so please follow them carefully. In addition, the make and model of the breaker are relevant.

The most critical step when setting up a sensor is to attach the shunt. If you want to be sure your shunt trip breaker is installed correctly, a shunt trip breaker diagram may be required.

It’s essential to verify the model and manufacturer of your breaker before commencing the installation. The manufacturer in some instances can only install the shunt trip and any other components. If you install your circuit breakers on your own, you might void the warranty. If you want to make alterations, you need either consult the manual or an electrician.

Here are some questions and answers related to the shunt trip breaker:

Does Shunt Trip Breaker Work?

Shunt trip breakers serve a vital purpose in the electrical system as a whole by providing an extra layer of protection for the circuits they are part of. In addition, they cut off electricity in times of crisis to avoid harm and damage to equipment.

What Are 3 Types Of Shunt Trip Breakers?

  • Standard breakers 
  • Around fault circuit interrupter circuit breakers (GFCIs)
  • Arc fault circuit interrupter circuit breakers 

They are the three fundamental circuit breaker types (AFCIs). And standard breakers include both single-pole and double-pole circuit breakers.

Why Is Shunt Used In MCCB?

Molded case circuit breakers (MCCBs) are often employed in electrical distribution systems to prevent overload and short circuits from damaging electrical components. In reaction to a voltage signal from the outside, the shunt release device, a built-in component of MCCB, releases the mechanism.

You have completely got the answer to what a shunt trip breaker is and understand its function. 

A circuit breaker’s shunt trip is an extra layer of safety that may be installed if desired. It’s meant to link up with another sensor. If the sensor is activated, the breaker will trip immediately. You may also set up a remote switch to turn it on and off.

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Erik Watkins Powerall

Erik Watkins

Automotive Mechanic at PowerAll

With 7 years experience in management positions leading automotive mechanics at PowerAll, Erik Watkins wishes to share useful knowledge and information about automotive mechanical equipment.

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shunt trip in mccb

Home » circuit breaker » Shunt trip breaker

Shunt Trip Breaker: How It Works to Trip a Circuit Breaker.

shunt trip breaker

While circuit breakers protect appliances from power surges , shunt trip breakers add more protection to our electrical system and equipment .

If you are looking to add additional protection to your home circuit, or even trip your breaker remotely from your comfort zone, why not shop for a shunt trip circuit breaker?

Table of Contents

What is a shunt trip breaker?

A shunt trip device is an optional accessory for breakers that allows you to trip a circuit breaker with a remote, or automatically trip the switch during electrical surge or short circuit .

Shunt trip breakers are mostly used in commercial and industrial applications to enhance safety and protection of electrical appliances.

Types of shunt trip breakers

There are two main types of shunt trip circuit breakers they include.

  • Automatic shunt trip breakers: These breakers trip automatically when they detect an electrical fault such as an overcurrent or a fire alarm.
  • Manual shunt trip breakers:  These breakers are tripped manually by pressing the remote button.

How the shunt trip circuit breakers work

A shunt trip breaker works like other circuit breakers . However, it comes with a solenoid coil which is connected to a separate control circuit. 

When the control circuit is energized due to electrical fault or overload, it creates a magnetic field around the solenoid coil, which pulls a plunger inward.

This plunger is connected to the tripping mechanism of the circuit breaker. So when it is pulled inward, it trips the breaker and cuts off the power source.

Alternatively, a shunt trip breaker can also work with a remote control so you can trip the breaker remotely when there are electrical hazards

Where are shunt trips required

Shunt trip circuit breakers are used in various applications such as

  • Industrial machines to protect it from damages that may arise from electrical faults.
  • Fire protection systems to automatically shut off electrical power in the event of a fire outbreak.
  • in commercial buildings for additional protection against electrical damage.
  • hospitals and healthcare facilities to protect hospital equipment from electrical damage.

Advantages of using a shunt trip breaker

There are several advantages to using a shunt trip devices, these include:

  • Enhanced Safety: It provides an additional layer of safety by quickly tripping the main breaker in the event of a fault or overload, preventing potential damage to electrical equipment.
  • Remote tripping capability: A shunt trip breaker usually comes with a remote control to enable you to turn off the breaker at any needed time.
  • Protection of sensitive equipment: It can help protect sensitive electrical equipment from power surges caused by overload or faults, ensuring the durability of the equipment.

Shunt trip breaker wiring

shunt trip breaker wiring diagram

Before you wire a shunt trip, there are some things you will need to know.

Shunt trip is an accessory and is not compatible with all breakers. Some breakers come with an in-built shunt trip, others require specific models, or to be installed in the factory. Therefore, it is necessary that you evaluate all these before the wiring .

If the breaker is compatible with the shunt trip device, you can then follow this wiring diagram to install it.

Based on the MCCB shunt trip breaker wiring diagram above, the 3-phase 4-wire system from supply is connected to the mccb breaker .

The neutral wire is connected to the shunt coil, and the control line wires to the EPO button. 

Difference between a shunt breaker and a GFCI 

A shunt trip and a ground fault circuit interrupters (GFCI ) are both electrical devices , however, they are designed to work in different ways and for different purposes.

Below are their major differences.

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Hi, I am Emmanuel Nwankwo, a commercial electrician and the founder of mariaelectricals.com . I established this blog to share my decades of work experience in electrical installations and repairs.

shunt trip in mccb

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  • What Is a Shunt Trip Breaker and How Does It Work

What Is a Shunt Trip Breaker and How Does It Work?

First things first: what is a shunt trip breaker? A shunt trip breaker is a specialized circuit breaker that is designed to remotely shut off power to a circuit in emergency situations, such as a fire or security breach. These breakers are commonly used in commercial and industrial buildings, as well as other facilities where safety is a top priority. In this article, we'll explore this type of breaker in detail and explain why hiring an  electrical services provider for a wiring shunt trip breaker is essential. 

The Many Benefits of a Shunt Breaker

Let’s recap: a shunt trip breaker is an electrical component connected to a circuit breaker and allows for remote operation through a schematic and AMP connection. Now that you know what a shunt trip circuit breaker is, it's time to move to the next part of this article: the benefits of using a shunt breaker.

  • Remote Shut-Off: One of the main benefits of shunt breakers is that they can be remotely shut off in the event of an emergency. This allows them to quickly and easily disconnect power in a fire or other emergency, which can help prevent damage to the building and protect the occupants.
  • Increased Safety: Besides remote shut-off, shunt trip circuit breakers provide an added level of safety and security by automatically shutting off power to a circuit in the event of an emergency. This helps prevent electrical fires and other hazards, protecting both people and property.
  • Easy Installation: Shunt breakers are relatively easy to install and can be integrated into existing electrical systems, making it possible to retrofit older buildings with these devices.
  • Cost-Effective: A shunt breaker is a cost-effective solution for increasing safety and security in commercial and industrial buildings. They are relatively inexpensive to purchase and install and can help prevent costly damage to the building and its contents in case of any emergency.
  • Compatibility: Shunt breakers are compatible with a wide range of electrical systems and devices, making them a versatile and practical solution for increasing safety in various settings.

How Does a Shunt Trip Breaker Work?

A shunt trip breaker works by tripping the breaker when it receives a signal from an external device, such as a fire alarm or security system. This helps to prevent dangerous electrical fires or other hazards. When an emergency occurs, the external device sends a signal to the breaker, which causes the breaker to trip and open the circuit, interrupting the flow of electricity and preventing power from reaching the circuit, allowing for a quick and easy power disconnection.

Types of Shunt Trip Breakers

Now that you know the answer to "How does a shunt trip breaker work", it's time to discover about the two main types of shunt trip breakers.

  • Manual Shunt Trip Breaker: This type of trip breaker requires manual intervention to reset the breaker after it has been tripped, meaning someone must physically go to the breaker and reset it after an emergency situation. This breaker is typically used in smaller residential buildings or situations where a dedicated staff member is available to reset the breaker.
  • Automatic Shunt Trip Breaker: This type of breaker can automatically reset itself after being tripped and is typically used in larger buildings or in situations where there is not always someone available to reset the breaker. These breakers are often connected to fire alarm systems or other emergency management systems for auto-reset.

When is a Shunt Trip Breaker Required?

If you're wondering when is a shunt trip breaker required, know that it is required in any electrical system where there is a need to quickly and easily shut off power in the event of an emergency, such as a fire or security breach. Continue reading as we describe the importance of using shunt trip breakers and how to figure out which one you need to use for your building or facility.

The Importance of Using a Shunt Trip Breaker

  • Shunt trip breakers automatically shut off power in emergencies.
  • They prevent dangerous electrical fires and other hazards.
  • They allow for quick and easy power disconnection in emergencies.
  • They are easy to install and cost-effective solutions for increasing safety.
  • They can be connected to fire alarm and emergency management systems.
  • They ensure that the electrical system is in compliance with safety regulations.
  • They are a versatile and practical solution for increasing safety in various settings.

Which Type of Shunt Trip Breaker to Use?

A manual breaker may be appropriate for a smaller building or in situations with a dedicated staff member available to reset the breaker, while an automatic breaker may be more appropriate for a larger building or in situations where someone is not always available to reset the breaker. Another option to consider is the use of a shunt trip relay, which can be used to trigger a shunt trip breaker remotely. These relays are typically connected to fire alarm systems or other emergency management systems and can send a signal to the breaker to trip it when an emergency occurs.

Shunt Trip Breaker Wiring Diagram

shunt trip definition and scheme for beginners

If you're wondering how to wire a shunt trip breaker, know that wiring can seem like a daunting task, but with the right knowledge and tools, it can be done relatively easily. Follow the steps below:

  • Obtain a "How to wire a shunt trip breaker wiring diagram." (Check above).
  • Gather necessary tools and materials such as wire strippers, nuts, and a voltage tester.
  • Disconnect the power and wire the shunt breaker according to the instructions provided.
  • Reconnect power to the circuit and test the breaker to ensure it works properly.

It is important to pay close attention to the diagram and follow the instructions carefully. This will ensure that the breaker is wired correctly and functions. Once the wiring is complete, you can reconnect the power to the circuit and test the breaker to ensure that it is working properly. It is always better to consult with a professional if you aren't confident about the wiring process. 

What Does a Shunt Trip Breaker Do?

We hope by now you know what does a shunt trip breaker do, but here's a recap: a shunt trip breaker is a specialized circuit breaker that protects your house electrical systems from damage or hazards in emergencies. It works by tripping the breaker when it receives a signal from an external device, such as a fire alarm or security system, preventing dangerous electrical fires or other regular hazards.

Nevertheless, it is important to understand what does shunt mean in electrical terms and the role of electrical shunt trip breakers in commercial and industrial settings. Finally, to determine the appropriate type of breaker for your specific needs, it is best to consult an electrical services provider. If you're based in Colorado or surrounding areas, McCarrick Electric has got you covered.

Superior Electrical Solutions in Colorado 

At McCarrick Electric, we have 25+ years of experience providing top-quality electrical services in Colorado. We value all of our customers, and that's why we offer a 15% discount for first-time residential clients and veterans. We take pride in our integrity, attention to detail, and cost-effectiveness. For more information, connect with us via our contact form or give us a call.

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Why NOARK’s 12VDC Shunt Trip Coils for MCCBs Make Power Systems Reliable and Safer

Posted by Kunmi Odunoku on March 19

Why NOARK’s 12VDC Shunt Trip Coils for MCCBs Make Power Systems Reliable and Safer

Circuit breakers are an essential component of any modern electrical system. Designed to protect your home or business from potential overloads or short circuits, these devices are your first line of defense against electrical fires. There are, however, situations where remote tripping of the circuit breaker may be required. It could be for operational reasons, for example being able to turn off machinery from the switch room which is not in the same location as the machine. In emergency situations, for example in fire outbreak, personnels can shut down power to a building without going in front of the breaker to do that. This can also be done automatically when the shunt trip receives a signal from the fire alarm or security system. This is an important safety consideration and at Noark we have just extended our line of Shunt Trips for Molded Case Circuit Breakers with the addition of 12Vdc shunt trips which are particularly suited for extra low voltage circuits.

Shunt Trip as an Internal Accessory for the Circuit Breaker Circuit breakers generally have two types of accessories – internal and external. Shunt trip is an example of an internal accessory of the circuit breaker since it is mounted or installed inside the circuit breaker’s frame or body. Other examples of internal accessories under the Molded Case Circuit Breaker’s family are Undervoltage release, Auxiliary contacts, Alarm contacts et cetera.

Once installed inside the circuit breaker, the shunt trip can receive remote signals by means of the connected wires and trigger the opening of the circuit breaker.

shunt trip in mccb

Shunt Trip Coil MCCB Benefits

At NOARK Electric, we prioritize safety and efficiency for our clients, which is why we offer shunt trips for our series of Molded case circuit breakers (MCCBs). NOARK Electric’s  shunt trip units are  ideal in safety considerations and operational flexibility.

This is because adding a NOARK MCCB  shunt trip coil accessory to a circuit breaker allows for the breaker to trip and open remotely or automatically when connected to a signaling safety circuit. in the event of an emergency.

The voltage control for our Shunt Release Trip (SHT) units ranges from 110 to 500 Vac and 12 to 24 Vdc. NOARK’s shunt trip units have an automatic interrupting opening time between 10ms and 60ms providing reliable and immediate trips to mitigate disasters.

Prioritize Power System Safety with NOARK Electric

Circuit breakers are vital for maintaining the safety of your electrical system. While it can be frustrating when they trip, remember that it’s a proactive and protective measure to prevent more serious electrical issues. By understanding why circuit breakers trip and taking steps to safely manage these events, you can ensure a safe and efficient electrical system.

Contact a NOARK Electric representative today to learn more about our Circuit breakers and accessories and how they can benefit your electrical systems.

Also, make sure you sign up for our NOARK newsletter to receive monthly updates on products, events, news, and more.

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Shunt Trip Breaker Wiring Diagram Explanation

As you know Safety is important in electricity works. Today I am writing about the shunt trip breaker wiring diagram which is related to the safety and protection of electricity. As you know that electricity is dangerous but it’s become more dangerous when it’s upgraded from 220 volts to 3 phase 440 volts. As you that mostly we use 3 phase system in industrial states where we can not protect our electrical distribution using RCD (residual current device). In Single phase wiring or house wiring, we use an electric power supply between phase and neutral which can be controlled by using a simple double pole RCD Breaker. But When it’s come to high-load places or where we use the three-phase supply then use an MCCB (module case circuit breaker) Shunt trip circuit breaker with an emergency push button switch which we know better with the name of EPO (emergency power off) button.

Shunt Trip Breaker Wiring Diagram with EPO Button.

In this post, I am just telling you about the wiring of a single EPO button with a shunt trip MCCB breaker. In an industrial state, the Electric operator’s duty is to operate the machinery and his duty is on the front of the Main panel board. Now if a short circuit is done in an electrical installation or other electrical accident, the operator can easily push a small push button switch and the all-electric power supply will be powered off. If we compare it with switching off the main circuit breaker then it will get more time.

Among the advantages of a shunt trip breaker, the most important thing is that we can install the emergency switch (EPO) anywhere, from where can easily push the button or where the push button is near to us.

One thing more is that we can install more than one EPO button for one breaker and every button will work the same. However, in this post shunt trip breaker wiring diagram I show only one EPO button and INSHALLAH in the next post I will show you the installation of multi EPO (emergency power off) buttons for a single shunt trip MCCB breaker.

Also, read below How do wire 3 or 4-pole MCCB Breakers? How to wire RCD Breaker? How earthing system works?

How Shunt Coil Work

In simple words, a shunt trip is an electromagnetic coil which makes a magnetic field by providing an external power source. In the coil a moveable rod is fixed with a spring and when we provide the supply The shunt trip moveable rod hit the tripping point or disconnecting point of the circuit breaker internally and the breaker becomes off or trips.

In the MCCB circuit breaker, we have a pushable button or place which is named “push to the trip” and when we switch on the breaker and push this button the breaker becomes switched off and trips due to pushing this button. The shunt trip coil rod pushes this point internally when the shunt coil is operated.

Here are some images of shunt coils and after that, we will discuss the shunt trip breaker wiring diagram with an image + symbol diagram.

Shunt Trip Device

Now let’s how to wire the shunt trip device (accessory), it’s too simple as I have shown in the above shunt trip device images that a shunt coil has only two wires, just like a magnetic contactor or magnetic relay coil. But you must provide the power source regarding coil-rated volts. You can find out the rate coil label on the shunt coil, circuit breaker or on the shunt trip coil.

But the question is how to wire it. And the answer is that “it’s also too simple”. We use a push button switch for the shunt coil which we know by its short name “EPO” which I discuss in my above words. In the EPO switch, we have four terminals of which two are Normally close to each other and the other two are normally open. So we need to provide the supply / current to the shunt trip device circuit breaker when the emergency moments come.

I.e example ” if we have a shunt trip coil which operates on 220 volts, so we need to provide the 220 volts AC current to the shunt trip coil to operate or to trip the breaker in an emergency time. So our neutral will be connected directly to the shunt tripping coil and Phase (hot wire) will be connected to the coil another side through the EPO push button switch normally opens contacts.

So the EPO switch will be normally open and when we push the switch in emergency time the switch normally opens contacts will make a close contacts connection and the hot wire current start flowing to the coil and complete the circuit because the neutral wire current is already connected to the coil. So the coil will make a magnetic field and push the rod, the rod will press the trip point and the breaker will disconnect the power supply to load.

Here is the complete explanation of the shunt trip circuit breaker wiring diagram which helps you understand completely.

shunt trip breaker wiring diagram

What is the purpose of a shunt trip circuit breaker

The main purpose of a shunt trip breaker is that we can easily switch off the main circuit breaker from our nearest place in a short time and can save us from electrical accidents.

Final words To wire, a shunt tripping breaker follows the below steps.

  • First of all wire your Circuit breaker.
  • Then connect the neutral wire to the shunt trip coil.
  • Then connect the Phase (hot wire) to the EPO button normally open contact.
  • Then get a connection from EPO to another side of the normally open contact and connect to the shunt trip coil.
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3 thoughts on “ shunt trip breaker wiring diagram explanation ”.

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Hi, I have a three phases circuit breaker, with 4 incoming cables and 4 cables to load (even the N cable is connected through the circuit breaker). Is it correct to connect the shunt trip to the phase and N in the load side of the circuit breaker?

thanks this is good blog. https://krmlight.com/shunted-vs-non-shunted/

One thing more that we can *install more *than* one EPO *button.

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Molded Case Circuit Breakers (MCCB)

Molded case circuit breakers provide branch or feeder circuit protection against overload or short-circuits, using thermal-magnetic or electronic trip units. UL489 rated MCCBs are available in various frame sizes for 3-pole configurations up to 1200A.

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Molded Case Circuit Breakers (MCCB)

Molded Case Circuit Breakers (MCCB)

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Fuji BW Series

Gladiator gcb series.

Molded case circuit breakers provide UL 489 listed performance to provide service entrance, feeder, and branch circuit protection in accordance with the National Installation Codes.

  • Fuji BW Series - Five frame sizes, 15 to 800 A, with up to 100kA interrupting capacity
  • 3P Series - Four frame sizes, 15 to 600 A, with up to 65kA interrupting capacity
  • Gladiator GCB Series - Seven frame sizes, 15 to 1200 A, with up to 100kA interrupting capacity

For part listing and specifications, go to Shop Now

BW125JAGU-3P015SB

  • Five frame sizes, 15 to 800A, max 600V
  • Standard type and high-interrupting capacities are available in identically sized industrial breakers
  • Shunt trip, undervoltage release and other accessories are available
  • Auxiliary switch and shunt trip breakers can easily be installed in the field

Starting at $266.00 (BW125JAGU-3P015SB)

G3P-015

  • Small size saves panel space
  • Four frame sizes, 15 to 600A, max 600V
  • Patented contact conductor design featuring high-speed "blow-open" action
  • Advanced arc extinguishing technology
  • Toggle handle that provides three positions (on/ off/ tripped)
  • Visual handle position indicators
  • Accessories include handles, auxiliary contacts, shunt trips and undervoltage releases
  • Type C361 door interlocking safety handle kits are available

Starting at $428.00 (G3P-015)

GCB100S-2FF15LL

  • Seven frame sizes, 15 to 1200 A, max 600V
  • 2-pole and 3-pole models
  • Available with adjustable, fixed, or electronic trip units
  • Extended and direct mount rotary handle
  • Flange handle with flexible cable and linkage
  • Locking devices
  • Accessories include auxiliary contacts, alarm contacts, shunt trips and undervoltage releases.

Starting at $160.00 (GCB100S-2FF15LL)

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shunt trip in mccb

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Shuntrip là gì? Ứng dụng của Shuntrip

Nội dung tóm tắt

  • 1 #Shunt trip là gì?
  • 2.1 Shuntrip dùng cho ACB
  • 2.2 Shuntrip dùng cho MCCB
  • 2.3 Shuntrip dùng cho MCB
  • 3 #Ứng dụng của Shuntrip

Sau đây, Cơ điện 24h giới thiệu cho độc giả chi tiết  Shuntrip là gì và nguyên lý hoạt động qua bài viết sau đây:

#Shunt trip là gì?

Shuntrip là một cuộn dây được gắn trong máy cắt VCB, ACB, MCCB, nếu sử dụng cho MCB thì nó được gắn bên hông của MCB, nó có nhiệm vụ là OFF máy cắt, CB khi có tín hiệu điện từ bên ngoài gửi vào.

  • +  Shunt trip theo tiếng anh lĩnh vực điện lạnh là bộ cắt mạch song song
  • + Shunt trip theo tiếng anh lĩnh vực điện có nghĩa là thiết bị nhả song song

>> Tham khảo: thi công điện nhà xưởng

#Cấu tạo và nguyên lý hoạt động của Shuntrip

Shuntrip dùng cho ACB

Shuntrip dùng cho ACB

Shuntrip dùng cho MCCB

Shuntrip dùng cho MCCB

Shuntrip-dung-cho-MCB

Shuntrip dùng cho MCB

Cấu tạo của nó dựa trên nguyên lí điện từ. Nếu bạn đưa điện áp đặt vào hai đầu cuộn dây của shuntrip thì shuntrip sẽ tác động vào kết cấu cơ khí bên trong của máy cắt và làm cho máy cắt trở về trạng thái OFF hoặc Trip tùy vào từng trạng thái của máy cắt.

  • + Thường thì shuntrip được kết hợp với nút nhấn Emergency Off ,hay kết relay bảo vệ,hay tín nhiệu
  • + Off từ xa hay tín hiệu PLC nào đó…

#Ứng dụng của Shuntrip

  • + Shunt trip ứng dụng cho nhiều mục đích như ngắt ngồn MCCB, ACB một cách tự động khi xảy ra sự cố như mất pha, sự cố dòng dò, quá nhiệt động cơ, mất một trong pha điện lưới,..
  • + Nhận tín hiệu điều khiển kết nối thiết bị như  Relay bảo vệ mất pha, thứ tự pha…
  • + Ứng dụng bảo vệ động cơ khi sự cố mất pha, tránh trường hợp làm cháy động cơ.

Ứng dụng của Shuntrip

Theo nguyên lý hoạt động của bộ bảo vệ mất pha, thứ tự pha DPA01CM44, thì relay ON sẽ tác động khi này, nguồn sẽ được cấp cho shunt trip. Dẫn đến việc báo trip MCCB. Tiếp điểm phụ của MCCB1 sẽ cắt nguồn cấp cho Shunt Trip (tránh trường hợp làm cháy Shunt Trip khi MCCB1 báo Trip lâu) Sơ đồ trên bạn có thể dùng bảo vệ động cơ, ngắt nguồn tự động khi có sự cố về điện xảy ra. Ngoài ra khi sử dụng bộ bảo vệ DPAxxx, ta cũng có thể dùng cắt nguồn điều khiển, cắt nguồn cuộn coil của contactor khi xảy ra sự cố về điện..vvv tùy vào ứng dụng hay việc nâng cấp hệ thống mà người dùng có thể ứng dụng.

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LV429387 Product picture

Shunt trip release MX, ComPacT NSX, 220/240VAC 50/60Hz, 208/277VAC 60Hz, screwless spring terminal connections

Voltage release type:

[Uc] control circuit voltage:

Sustainability

shunt trip in mccb

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Product out of China RoHS scope. Substance declaration for your information

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shunt trip in mccb

The product must be disposed on European Union markets following specific waste collection and never end up in rubbish bins

No need of specific recycling operations

IMAGES

  1. MAXGUARD MCCB SHUNT TRIP INSTALLATION

    shunt trip in mccb

  2. MCCB Shunt Release

    shunt trip in mccb

  3. MCB Shunt Trip Wiring with Push Button Diagram Animation

    shunt trip in mccb

  4. What is Shunt Trip and How to Install in MCCB || Complete introduction and Details About SHUNT TRIP

    shunt trip in mccb

  5. MCCB से Shunt Release Coil कैसे Bypass करते हैं ?

    shunt trip in mccb

  6. Why Shunt Trip Coil and Auxiliary Block Used in MCCB

    shunt trip in mccb

VIDEO

  1. Shunt trip MCCB #electrical

  2. UNDER VOLTAGE RELEASE &SHUNT TRIP COILشرح

  3. MCCB Trip #mccb #electrician #shorts #engrsaifelectrical

  4. mccb trip#dailyvlog#santhali#kalidasyoutubeshortvideo#youtubeshort#electric

  5. PUSH TO TRIP MCCB 1000A #thodien #diy

  6. إختبار shunt trip خاص بمفتاح ABB MCCB T5

COMMENTS

  1. What is a Shunt Trip Breaker and How Does It Work?

    The shunt trip breaker is a combination of the shunt trip accessory and the main circuit breaker. This installs on the main breaker to add protection to your electrical system. This adds security to your electrical system as it manually or automatically cuts the electric supply in your circuit. This accessory can help prevent short circuits and ...

  2. How does a shunt trip work to trip a circuit breaker?

    Circuit Breakers. Resolution: A shunt trip device is an optional accessory in a circuit breaker that mechanically trips the breaker when power is applied to the shunt trip terminals. The power for the shunt trip does not come from within the breaker, so it must be supplied from an external source. Released for: Schneider Electric USA.

  3. A Guide to Wiring a Shunt Trip Circuit Breaker: Everything You Need to Know

    Shunt trip circuit breakers offer enhanced safety, flexibility in system design, remote monitoring and control capabilities, and find applications in diverse industries. Their ability to quickly disconnect power remotely in case of emergencies makes them a crucial component of electrical systems. ... Accessories of MCCB @LearnEEEEnglish. Post ...

  4. What Is A Shunt Trip Breaker & How Does It Work?

    Adding a shunt trip breaker provides an additional method to charge the magnets and trip the switches, which makes it possible to turn off the electricity remotely or automatically. Some of the shunt trips are powered by an external source. When a power surge occurs at this source, a notification is delivered from the shunt trip towards the ...

  5. Shunt Trip Breaker: What it is, Types and How It Works

    If the breaker is compatible with the shunt trip device, you can then follow this wiring diagram to install it. Based on the MCCB shunt trip breaker wiring diagram above, the 3-phase 4-wire system from supply is connected to the mccb breaker. The neutral wire is connected to the shunt coil, and the control line wires to the EPO button.

  6. What is Shunt Trip and How to Install in MCCB

    What is Shunt Trip and How to Install in MCCB || Complete introduction and Details About SHUNT TRIP.in this video I'll show you how to install shunt Trip in ...

  7. Basics Of Molded Case Circuit Breakers (MCCBs)

    The function of the trip unit is to trip the operating mechanism in the event of a short circuit or a prolonged overload of current. Basics Of Molded Case Circuit Breakers (MCCBs) - EATON. 1. Electromechanical (thermal magnetic) trip unit. Traditional molded case circuit breakers use electromechanical (thermal magnetic) trip units.

  8. How Does a Shunt Trip Breaker Work?

    A shunt trip breaker is a specialized circuit breaker that is designed to remotely shut off power to a circuit in emergency situations, such as a fire or security breach. These breakers are commonly used in commercial and industrial buildings, as well as other facilities where safety is a top priority. In this article, we'll explore this type ...

  9. PDF Instructions for Undervoltage Release, Shunt Trip, and ...

    Section 2: Installation of Undervoltage Re-lease and/or Shunt Trip in Left Accessory Tray. Proceed with the following 13 steps: Step 1: Remove the four screws holding the front cover in place (two on each side of the cover). Figure 4. Step 1 (NF Frame Shown). Step 2: Remove the front cover.

  10. Shunt Trip Breaker Wiring Diagram @JrElectricSchool

    A shunt trip breaker is a specially designed circuit to trip the mccb manually by the applied power supply to its shunt trip coil the main function of an mcc...

  11. MCCB Breaker Shunt Trip and Indication Lamp Connection

    MCCB shunt trip coil connection along with Auxiliary Contact ConnectionIn this video, we are going to learn how to do connection of Shunt Coil to turn Trip t...

  12. Shunt Trip device

    Push trip bar towards load end to trip mechanism. Push trip bar towards line end to trip mechanism. — Figure 3. — Figure 6. STEP 4 Installation Drop down the Shunt Trip Device in the base right pole as shown Figure 5. Be absolutely sure to reinstall parts in their proper location which are accidentally removed from the breaker.

  13. Why NOARK's 12VDC Shunt Trip Coils for MCCBs Make Power Systems

    This is because adding a NOARK MCCB shunt trip coil accessory to a circuit breaker allows for the breaker to trip and open remotely or automatically when connected to a signaling safety circuit. in the event of an emergency. The voltage control for our Shunt Release Trip (SHT) units ranges from 110 to 500 Vac and 12 to 24 Vdc.

  14. Shunt Trip Circuit Breaker Wiring Diagram

    The shunt trip moveable bar hits the tripping point of the circuit breaker internally and the breaker becomes off. In the MCCB circuit breaker, the tripping point is named "push to the trip". While switching on the breaker and pushing this button the breaker becomes switched off and trip due to pushing this button.

  15. Shunt Trip Breaker Wiring Diagram Explanation

    Shunt Trip Breaker Wiring Diagram with EPO Button. In this post, I am just telling you about the wiring of a single EPO button with a shunt trip MCCB breaker. In an industrial state, the Electric operator's duty is to operate the machinery and his duty is on the front of the Main panel board.

  16. S2c-a2

    Product ID: 2CDS200909R0002. EAN: 4016779571005. Catalog Description: S2C-A2 Shunt Trip. Long Description: Remote opening of the device when a voltage is applied. Suitable for MCBs S200 series and RCBOs DS 200 series.

  17. SHUNT TRIP BREAKER WIRING DIAGRAM// SHUNT TRIP CONNECTION ...

    Shunt trip breaker is a specially designed circuit to trip the mccb manually by the applied power supply to its shunt trip coil. Mccb will trip automatically...

  18. Molded Case Circuit Breakers (MCCB)

    Molded Case Circuit Breakers. Molded case circuit breakers provide branch or feeder circuit protection against overload or short-circuits, using thermal-magnetic or electronic trip units. UL489 rated MCCBs are available in various frame sizes for 3-pole configurations up to 1200A. Molded Case Circuit Breakers (MCCB)

  19. MX shunt trip release, Compact NSX, PowerPact Multistandard, EasyPact

    Green Premium TM label is Schneider Electric's commitment to delivering products with best-in-class environmental performance. Green Premium promises compliance with the latest regulations, transparency on environmental impacts, as well as circular and low-CO 2 products. Guide to assessing product sustainability is a white paper that clarifies global eco-label standards and how to interpret ...

  20. How does a shunt trip work to trip a circuit breaker?

    A shunt trip device is an optional accessory in a circuit breaker that mechanically trips the breaker when power is applied to the shunt trip terminals. The power for the shunt trip does not come from within the breaker, so it must be supplied from an external source. Released for: Schneider Electric Australia. Published on: 8/8/2001 Last ...

  21. 220V Shunt Trip For 3 & 4P MCCB 16 to 250A

    Shunt trip coil. Fitted internally to MCCB - allows intentional tripping of MCCB from a control contact. Related products. MC Range MCCB Distribution Boards, MCCB Distribution Boards, Moulded Case Circuit Breakers 40A Single Pole 36kA Moulded Case Circuit Breaker. Read more. Quick View.

  22. Shuntrip là gì? Ứng dụng của Shuntrip

    Theo nguyên lý hoạt động của bộ bảo vệ mất pha, thứ tự pha DPA01CM44, thì relay ON sẽ tác động khi này, nguồn sẽ được cấp cho shunt trip. Dẫn đến việc báo trip MCCB. Tiếp điểm phụ của MCCB1 sẽ cắt nguồn cấp cho Shunt Trip (tránh trường hợp làm cháy Shunt Trip khi MCCB1 báo ...

  23. LV429387

    Schneider Electric Australia. LV429387 - Shunt trip release MX, ComPacT NSX, 220/240VAC 50/60Hz, 208/277VAC 60Hz, screwless spring terminal connections.