A shunt trip breaker is used to trip a circuit breaker remotely. It is a safety device that is commonly used in commercial and industrial applications. The shunt trip breaker is designed to shut off power to a circuit when there is an emergency or if the circuit has an abnormal condition. In this article, we will discuss the 120v shunt trip breaker wiring diagram.
What is a Shunt Trip?
A shunt trip is a device that is used to remotely trip a circuit breaker. It is commonly used in commercial and industrial applications to shut off power to a circuit when there is an emergency or if the circuit has an abnormal condition. The shunt trip works by energizing a coil that is connected to a circuit breaker. When the coil is energized, it opens the circuit breaker, which shuts off power to the circuit.
The shunt trip is typically installed in a remote location, such as a control panel, where it can be easily accessed by authorized personnel. When activated, it can shut off power to multiple circuits, which can help prevent damage to equipment and reduce the risk of injury to personnel.
How Does a Shunt Trip Breaker Work?
A shunt trip breaker works by energizing a coil that is connected to the circuit breaker. When the coil is energized, it opens the circuit breaker, which shuts off power to the circuit. The shunt trip can be activated manually, such as by pressing a button, or it can be activated automatically in response to a sensor or alarm.
The shunt trip breaker is typically used in applications where it is important to shut off power quickly in an emergency or abnormal condition. Examples include fire alarms, smoke detectors, and other safety systems.
Wiring a 120v Shunt Trip Breaker
The wiring of a 120v shunt trip breaker is relatively straightforward. However, it is important to follow the wiring diagram carefully to ensure that the shunt trip functions correctly. The following steps will guide you through the process:
- Ensure that power to the circuit is turned off.
- Remove the cover from the circuit breaker panel.
- Identify the circuit breaker that will be used with the shunt trip.
- Locate the shunt trip connections on the circuit breaker. These are typically located on the top or bottom of the breaker.
- Connect the wires from the shunt trip to the appropriate terminals on the breaker.
- Route the wires from the shunt trip to the control panel or other location where the shunt trip will be activated.
- Connect the wires from the shunt trip to the appropriate terminals in the control panel or other location.
- Test the shunt trip to ensure that it functions correctly.
- Replace the cover on the circuit breaker panel.
FAQ
What is a shunt trip breaker used for?
A shunt trip breaker is used to remotely trip a circuit breaker. It is commonly used in commercial and industrial applications to shut off power to a circuit when there is an emergency or if the circuit has an abnormal condition.
How does a shunt trip work?
A shunt trip works by energizing a coil that is connected to a circuit breaker. When the coil is energized, it opens the circuit breaker, which shuts off power to the circuit. The shunt trip can be activated manually, such as by pressing a button, or it can be activated automatically in response to a sensor or alarm.
How do you wire a shunt trip breaker?
The wiring of a shunt trip breaker is relatively straightforward. However, it is important to follow the wiring diagram carefully to ensure that the shunt trip functions correctly. Typically, the shunt trip is connected to the appropriate terminals on the circuit breaker and then routed to a control panel or other location where it will be activated.
What are some common applications for shunt trip breakers?
Shunt trip breakers are commonly used in commercial and industrial applications where it is important to shut off power quickly in an emergency or abnormal condition. Examples include fire alarms, smoke detectors, and other safety systems.
| Terminal | Function |
|---|---|
| A1 | Common |
| A2 | Control voltage |
| SH | Shunt trip |
| NC | Normally closed |
| NO | Normally open |
In conclusion, a shunt trip breaker is a safety device that is commonly used in commercial and industrial applications. The wiring of a 120v shunt trip breaker is relatively straightforward, but it is important to follow the wiring diagram carefully to ensure that the shunt trip functions correctly. If you have any questions about wiring a shunt trip breaker, consult a qualified electrician or contact the manufacturer for assistance.
