LELHPK11-31304-1-V Circuit Protection

Circuit Breakers

A circuit breaker is an electrical unit designed to automatically turn off the power of an electric circuit if it senses an overload of electric current. This device provides a vital safety feature, as it prevents an extreme amount of current from flowing through the circuit and potentially causing sparks or a fire. The LELHPK11-31304-1-V is one such circuit breaker.

LELHPK11-31304-1-V Application Field

The LELHPK11-31304-1-V is a general purpose two-pole thermal-magnetic circuit breaker and is suitable for a variety of applications, including low-voltage industrial and commercial installations. This device is also suitable for switching larger motors, such as those controlling pumps and fans, and for protection against overloads, short circuits, and ground-faults. It is UL 489 Listed and CSA Approved and meets CSA Standard C22.2 No. 5-11.

LELHPK11-31304-1-V Working Principle

The LELHPK11-31304-1-V is constructed with two poles, which are separate independent power interrupting functions. It contains a thermal-magnetic trip mechanism to provide both overload and short circuit protection. The overload protection is provided by a bimetal, which will operate if the current exceeds a certain threshold. The short-circuit protection is provided by a magnetic trip, which will operate if the current exceeds a certain fixed value. As soon as the overcurrent is detected, the circuit breaker will trip, disconnecting the circuit and preventing any further damage.

Conclusion

The LELHPK11-31304-1-V is a two-pole thermal-magnetic circuit breaker designed for low voltage industrial and commercial applications. It is UL 489 Listed and CSA Approved and features overload and short circuit protection. It features a bimetal element for overload protection and a magnetic trip for short circuit protection, which quickly trips the circuit breaker as soon as an overcurrent is detected.