IELH11-25261-2-V Circuit Protection

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Circuit Breakers

A circuit breaker is an important part of electrical wiring systems. Generally, it is used to provide over-current protection for electrical circuits. It breaks an electrical circuit whenever a dangerously high current flows through it. Circuit breakers can also be used to prevent the abnormal operation of motors and other electrical devices.

IELH11-25261-2-V application field and working principle

The IELH11-25261-2-V is a type of circuit breaker specifically designed for applications in rail roads and industry automation such as power supply systems, switching systems, process control systems, emergency lighting, and control relay systems. It is a quick-trip type circuit breaker and it features zero voltage release technology to enable swift opening.

This particular model of circuit breaker operates on a thermal-magnetic principle. This means that it responds to both heat generated by an increased current that exceeds the rated circuit breaker ampere (A) rating, as well as a magnetic field intensifying the thermal effect. The increased temperatures will cause the bimetallic strip to bend and the increased magnetic field will attract the tripper arm. In both cases, the circuit will open. This dual sensing ability allows for more reliable and faster response times than circuit breakers that utilize only thermal sensing.

The IELH11-25261-2-V also features a push-to-reset mechanism, allowing it to be closed again once the issue causing the high currents is addressed and resolved. This feature allows for instantaneous operation, as it eliminates the need to replace the device or re-trip the circuit breaker.

Although the IELH11-25261-2-V is designed for applications in railroads and industrial automation, it can also be used in wiring systems in homes and buildings. This type of circuit breaker is available in different frame sizes and current ratings ranging up to 125 A, providing ample protection against excessive current.

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