What Is A Shunt Trip?

Are you curious to know what is a shunt trip? You have come to the right place as I am going to tell you everything about a shunt trip in a very simple explanation. Without further discussion let’s begin to know what is a shunt trip?

In the realm of electrical systems, safety is of paramount importance. To ensure the well-being of individuals and safeguard valuable equipment, various mechanisms and technologies have been developed. One such mechanism is the “Shunt Trip,” a specialized device that enhances electrical safety and control. In this blog post, we will explore the concept of the Shunt Trip, its functionality, applications, and its crucial role in maintaining electrical system integrity.

What Is A Shunt Trip?

A Shunt Trip refers to an electrical accessory or device installed in circuit breakers, particularly those used in commercial and industrial settings. It is designed to provide an additional safety measure by remotely tripping or de-energizing a circuit breaker when a specific condition or signal is detected. The Shunt Trip acts as a supplemental control mechanism that can be activated manually or automatically to interrupt the electrical current flow swiftly.

Functionality And Operation:

The Shunt Trip operates by utilizing a separate electrical circuit, commonly connected to a control panel or a central monitoring system. When a predetermined event or condition occurs, such as a fault or emergency situation, a signal is sent to the Shunt Trip device. This signal energizes the coil within the Shunt Trip, creating a magnetic field that, in turn, causes the circuit breaker to trip and interrupt the electrical current flow instantaneously.

Applications Of Shunt Trip:

  • Electrical Safety in Emergency Situations:

In critical environments, such as hospitals, data centers, or industrial facilities, the Shunt Trip plays a vital role in enhancing electrical safety during emergency situations. In the event of a fire, smoke detection systems can trigger the Shunt Trip, cutting off power to specific circuits and preventing further damage or risk to occupants and valuable assets.

  • Arc Fault Protection:

Arc faults can occur due to damaged wiring, loose connections, or faulty equipment, posing a serious fire hazard. By incorporating a Shunt Trip in circuit breakers, the detection of an arc fault can activate the device to trip the breaker, isolating the affected circuit and preventing the escalation of the fault.

  • Maintenance and Service:

The Shunt Trip also finds utility in maintenance and service scenarios. By remotely tripping a circuit breaker, technicians can safely work on electrical systems without the risk of accidental electrocution or damage to equipment. This capability improves the efficiency and safety of maintenance operations.

  • Integration with Building Automation Systems:

Shunt Trips can be integrated into building automation systems, allowing for centralized monitoring and control of electrical systems. Through this integration, a variety of triggers can initiate the Shunt Trip, such as the detection of abnormal voltage levels, excessive current, or unauthorized access to restricted areas.

Benefits Of Shunt Trip:

  • Enhanced Electrical Safety:

By providing an additional layer of control, the Shunt Trip contributes to the overall safety of electrical systems, reducing the risk of electrical hazards and potential damage.

  • Rapid Response:

The Shunt Trip’s ability to swiftly interrupt the electrical current flow is crucial in emergency situations, preventing further harm and allowing for efficient mitigation of risks.

  • Remote Activation:

The capability to remotely trip a circuit breaker through the Shunt Trip device enhances convenience, safety, and efficiency in various operational scenarios.


The Shunt Trip stands as a valuable component in electrical systems, offering enhanced safety, control, and protection against potential hazards. Its ability to remotely trip circuit breakers in response to specific conditions or signals plays a crucial role in minimizing risks and maintaining the integrity of electrical systems. By incorporating Shunt Trips in critical applications, we can ensure the safety of individuals, protect valuable equipment, and mitigate potential damages. As technology continues to advance, the Shunt Trip remains a fundamental tool in promoting electrical safety and control.

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What Is Shunt Trip And How Does It Work?

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.

What Is An Emergency Shunt Trip?

A shunt trip breaker is an optional accessory for one’s circuit breaker that allows individuals to trip the breaker remotely at any time or automatically during a surge, which prevents injuries and equipment damage during emergencies. They are used in industrial, commercial, and residential environments.

What Is The Function Of A Shunt Coil?

Shunt releases are commonly used in remote automatic power-off control, and are used for remote operation of low-voltage circuit breaker opening control. Its electromagnetic coil is connected in parallel with the power supply side of the low-voltage circuit breaker.

What Triggers A Shunt Trip Breaker?

How Does a Shunt Trip Breaker Exactly Work? Typically, electrical currents travel through your house’s circuit breaker unchanged. However, when these currents surge too high, the extra surge of power charges an electromagnet beneath the main breaker switch, tripping the switch and cutting power.


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