IELHK21-29514-1-V Circuit Protection

As one of the key components of power supply, circuit breakers play a very important role in the power technology industry. IELHK21-29514-1-V is one of the representatives of advanced circuit breakers. It has a wide range of applications and can be applied to many situations. What are the specific application field and working principles of IELHK21-29514-1-V circuit breaker?

Application field of IELHK21-29514-1-V circuit breaker

IELHK21-29514-1-V is an advanced circuit breaker. It is mainly used in household appliances, power distribution and protection of motor circuit, power distribution and protection of filter switch. Moreover, its specific applications are very wide, such as low voltage intelligent distribution, high voltage switchgear, interior circuit of motor, protection functions, remote switch, motor control center, network security and control, monitoring and control of switching power supply, multi-circuit protection of digital power system, control circuit and so on.

Working principle of IELHK21-29514-1-V circuit breaker

IELHK21-29514-1-V adopts MCB (Miniature Circuit Breaker) principle. The contact structure is three-pole three-phase common neutral. It acts on two parts: contact and arc extinguishing chamber. Its contact closes and opens by the action of plunger. When the electrical circuit is normal, the contact spring force acting on the two contacts keeps them in close contact. When an overload occurs, it acts on the connection of the two parts in the actuator. The actuator reaches a certain degree, the reaction force of the contact spring is greater than the pressure of the plunger, the contact is opened by releasing the spring force, and the circuit is broken. The arc generated when the contact is opened is extinguished in the arc extinguishing chamber.

In addition, circuit breaker is the main body of circuit protection, its purpose is to cut off the fault circuit in time and keep the normal circuit working. If the current in the circuit is too large, when the current reaches the specified value, the circuit breaker will trip and break off. In short, it realizes the purpose of protecting the circuit.