shunt trip breaker

A shunt trip breaker is a circuit breaker designed to quickly disconnect an electrical circuit in the event of an emergency or safety hazard. Unlike traditional circuit breakers that trip automatically when they sense an overload, a shunt trip breaker can be remotely triggered using a control signal, allowing for rapid shut-off when necessary.

This makes them ideal for use in applications where speed is of the essence, such as in industrial settings or critical infrastructure systems. Additionally, some shunt trip breakers are equipped with advanced features like programmable trip settings and remote monitoring capabilities, further increasing their usefulness in modern electrical systems.

Definition of Shunt Trip Circuit Breaker

When a circuit breaker “trips,” it detects a fault and shuts down the electrical flow to protect the wiring from getting too hot.

A shunt trip breaker is an extra circuit breaker device that allows you to trip the breaker manually at any time or immediately during a prickle, minimizing wounds and equipment damage.

Automatic and manual shunt tripped breakers are the two most common types. You can use a remote button to turn off the breaker outside the building with manual switches. Meanwhile, when autonomous switches detect a spike from such an external power supply, they turn off the power.

How Does a Shunt Trip Breaker Work?

The shunt trip breaker combines the main circuit breaker and the shunt trip auxiliary. This goes on the primary breaker to provide your electrical system with more protection. Trip breaker system identification to your electrical grid by cutting the power to the circuit manually and automatically.

This item can effectively deter short circuits and electrical harm if a tragedy strikes your home.

How Does a Shunt Trip Breaker Collaborate?

  • Shunt trip breakers are not to be confused with GFCI circuit breakers.
  • One white big tail wire is included in the GFCI circuit breaker for unbiased interconnection.

Because the GFCI circuit breaker is only configured to catch a sudden electrical surge, it cannot be attached to anything. Its primary intention is to cut electricity in the event of a shortage.

On the other hand, the shunt trip breaker wiring consists of two wires. One is attached to the ground, while the other is connected to a control scheme. A sensor or a mechanical switch can be attached to the control scheme. The main breaker will fall when the shunt trip attachment is turned on.

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How Does It Work?

If the electrical current in construction remains below that of a specified limit, it moves through the system’s circuit breaker unaffected. If the current spikes too high, the extra energy charges an electromagnetic in the circuit breaker, which trips a switch and cuts power. The electronic signal to set this magnet can originate from secondary information, such as smoke alarms or manual control, via a shunt trip.

How Does a Shunt Trip Get Connect?

Place the item in the circuit breaker where it belongs. Ensure you have the proper specifications for a shunt trip for your circuit breaker.

Connect the two connections to the rated voltage following properly inserting the unit within the circuit breaker, with the switch leg to the power supply and the other leg to the neutrality (in case you are using an L-N power source). In the case of string service, the switch leg might be connected to either of the lines.

What does a breaker shunt trip mean?

When electricity is given to the shunt trip terminals, a circuit breaker’s optional shunt trip device trips the breaker manually. The breaker does not supply power to the shunt trip, so another power source is needed.


When water comes in contact with electricity, shunt trips come in handy. A smoke detector-connected shunt trip obtains its shutoff information while the smoke detector activates the sprinklers. This not only lessens the risk of electrocution but also minimizes the destruction of electrical equipment.

Safety systems such as carbon monoxide detectors & fire and emergency buttons/switches are examples of external sources. For example, when smoke activates near a smoke detector, the breaker immediately trips. At the same time that the smoke detector activates the sprinkler, the power to electrical equipment is turned off.

The power outage minimizes electrical damage and eliminates the risk of short circuits and electrocution. On the other hand, shunt trip breakers can be turned off remotely; for example, after a building has been damaged by fire, anyone can turn off the switch and other building using a remote manual switch. Shunt trip switches are vital safety components that protect electrical equipment and people from harm.

What is a shunt trip breaker’s purpose?

A shunt trip breaker is a circuit breaker device that allows you to trip the breaker electronically or immediately during a surge, saving a lot of time and equipment malfunctions during an emergency. Automatic and manual shunt trip breakers are the two most common types.

Where do shunt trip breakers come in handy?

Because it is necessary, most commercial kitchens, escalators, and offices have this shunt trip breaker. This device complies with ANSI/ASME CSD-1 in professional kitchens and ASME A17 in cranes.

What is a DC shunt, exactly?

A direct current (DC) shunt is a variable resistor designed to deliver a millivolt output proportional to the electricity passing through the shunt to a meter or other instrument.

Why is the shunt connected in series?

Shunt resistance is placed parallel to the galvanometer to keep the impedance low. A low resistance galvanometer is used in parallel with the capacitor to determine the current strength.

What is the difference between an Under voltage release and a shunt trip?

The fundamental difference here between a shunt trip and an Undervoltage release is that when an influence of the final is given to its coil, the shunt trip activates the circuit breaker. When an impact of the last is taken from its coil, the Undervoltage release, is from the other hand, breaks the breaker.

What is the meaning of shunt trip release?

The shunt trip is an electric component that allows the circuit breaker to open instantly. The majority of the time, it is controlled by ordinarily open contact. It is also known as a shunt release or an opening coil. You can activate the circuit breaker electronically by energizing the shunt trip.


In MCCB, what is shunt trip release?

The MCCB’s inbuilt shunt release device unlocks the machinery according to an externally provided voltage signal. An actuator and just a control circuit make up the shunt release device. Each portion of a traditional shunt release device contains two bodies.

So, what exactly is a shunt relay?

Hubbell Control Solutions’ bypass is enclosed. When utilized on an emergency circuit, shunt switches are often used to bypass conventional control such as switch, dimmer, or board-mounted relay. The line and load sides of the control device are connected by the shutoff valve relay in the UL924SR1/UL924SR2.