LELK1-31818-20

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Circuit Breakers

Circuit breakers are an important tool of safety for electricity systems and are used to protect people and equipment from dangerous electrical faults. The LELK1-31818-20 is a circuit breaker that offers reliable and convenient protection, with a multitude of applications across a variety of fields.

Application Fields

The LELK1-31818-20 is a medium voltage circuit breaker, designed for applications in power distribution and motor control systems, ranging from 4.16kV to 17.5kV. This circuit breaker is commonly used in in low-voltage installations such as industrial factories, distribution centers, and industrial plants. It can also be used in medium-voltage applications such as petrochemicals, telecommunications, and power generation.

The LELK1-31818-20 can also be used in industrial franchises that process potentially hazardous materials, as its protection system is strong enough to protect from these environments. This circuit breaker can also be found in shipyards, as it is suitable for the variable electrical load scenarios typically found in this setting.

Working Principle

The LELK1-31818-20 is a multi-function circuit breaker comprising of a self-powered surge device, a trip unit, and a set of mechanical relays. It works by detecting electrical faults, including overloads, shorts circuit, and ground fault conditions, and then safely disconnecting the devices connected to it.

In order to detect overcurrent conditions, the circuit breaker\'s trip unit utilizes both instantaneous and long time overcurrent elements. The instantaneous element is designed to detect very brief, high-intensity overcurrent conditions, while the long time element is designed to detect sustained overloads. The trip unit also contains a voltage detector, which protects the power system in the event of under voltages or over voltages.

The LELK1-31818-20 uses a mechanically-operated, spring-load mechanism to make and break the electric current. It comprises of a mechanical contactor operated by a coil, which is energized or de-energized by the trip unit depending on the electrical fault detected. The spring-loaded contactor is designed to snap open quickly when a fault is detected and then snap shut when the fault is cleared, restoring control of the electrical circuit.

The LELK1-31818-20 is an excellent choice for an extensive range of applications, thanks to its reliable protection and flexible mechanical design. It offers superior protection to power systems and personnel, ensuring safe and efficient operation.

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