LELHK21-35286-1 Circuit Protection

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Circuit breakers are electrical devices, which are used to protect electrical appliances, wiring and other items from damage caused by too much power. Circuit breakers act as switches, which automatically open and shut off the flow of electricity when needed. This reduces the risk of electrical short circuits and overheating, which can potentially cause fires. One example of a circuit breaker is the LELHK21-35286-1.

The LELHK21-35286-1 is a 3-pole molded case circuit breaker, designed for high performance applications, such as power plants, motors, and industrial equipment. It has an adjustable short circuit current rating of 12-35kAIC, 3-pole thermal-magnetic trip operation, and voltage rating up to 600V AC. In addition, the LELHK-35286-1 has an adjustable short-circuit range of 20-35kAIC and a trip loop test feature with selectable time delays, which helps provide reliable circuit protection in various applications.

The working principle of the LELHK21-35286-1 includes two components – a thermal-magnetic trip unit and a variable short-circuit range. The thermal-magnetic trip unit contains an electromagnet, which reacts when an overcurrent event occurs, closing the circuit breaker’s contacts. As current passes through the thermal element, it produces heat, which is also sensed by the trip unit. This allows the circuit breaker to automatically open the circuit if the current exceeds the predetermined trip level. The variable short-circuit range helps adjust the amount of energy that is released in the form of heat, allowing the user to choose the best protection for their application.

The LELHK21-35286-1 can be used in all kinds of applications such as motor circuits, lighting circuits, machine tools, HVAC systems, power distributions systems, residential circuits, and many others. It can be used to provide protection against short circuits, overloads, and other hazardous electrical conditions. It is a reliable and economical solution for all kinds of electrical applications, offering maximum protection with its adjustable short-circuit range and trip loop test feature. The LELHK21-35286-1 is UL-listed and can be used in a variety of applications to provide reliable and efficient circuit protection.

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