LELHK11-1REC4-40400-25-V

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LELHK11-1REC4-40400-25-V application field and working principle

Circuit breakers are widely used in electrical applications, from residential fuse boxes to industrial power distribution for motor control. The LELHK11-1REC4-40400-25-V is a circuit breaker manufactured by Eaton, with a rated voltage of AC 400V. It uses arc extinction for the circuit breaking action. It is ideal for controlling branch circuits, starting and protecting motors from short circuits or overloads, and for controlling lighting circuits.

When the circuit breaker detects an overload or a short circuit, it activates the trip unit mechanism. The mechanism consists of a bimetallic element, and when an overcurrent or short circuit occurs, the thermal element in the trip unit heats up. This causes the bimetallic element to bend, which releases the main arcing contacts of the breaker to open the circuit.

The mechanism features adjustable trip settings, so it can be fine-tuned to control faults on specific circuits. The breaker is also equipped with an indicator flag, which can be set to indicate when the breaker has tripped. The breaker also feature an auxiliary contact, which can be used to deactivate or activate other components when the breaker trips or returns to closing position.

The LELHK11-1REC4-40400-25-V circuit breaker is UL listed with several types of trip units, depending on the application. In high current applications, thermal-magnetic units are used. In low current applications, Thermal-only units are used. The breaker also has a wide range of interrupting ratings: from 1kA up to 100kA. All these features make it a very versatile and reliable circuit breaker for almost any application.

In conclusion, the LELH11-1REC4-40400-25-V circuit breaker is a great choice for many light commercial and residential electrical applications. It is easy to install, is UL listed and has adjustable trip settings for specific circuit protection, as well as an indicator flag and an auxiliary contact.

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