Energy storage circuit breaker contact point

How do circuit breaker contacts work?

These circuit breaker contacts must be moved swiftly and with significant force in order to ensure quick and repeatable make/break times. In order to achieve this rapidity of motion, the breaker is designed to actuate by the stored energy of large mechanical springs.

Where is a contact located in a circuit breaker?

Contacts are found in the arc interruption chamber (in low voltage circuit breakers) and in the vacuum interrupter (in medium voltage vacuum circuit breakers). The contact assembly consists of the movable contact, the movable contact arm, the stationary contact and the stationary conductor.

What is a circuit breaker?

A circuit breaker is an electrical switch designed to protect an electrical circuit from damage caused by overcurrent/overload or short circuit. Its basic function is to interrupt current flow after protective relays detect a fault.

What is a circuit breaker contact Assembly?

The contact assembly consists of the movable contact, the movable contact arm, the stationary contact and the stationary conductor. As the circuit breaker opens or closes, the fixed contact moves to close (make) or open (break) the circuit. The contacts are designed to protect against two fault conditions

What is a power defense circuit breaker?

Its basic function is to interrupt current flow after protective relays detect a fault. Take an indepth look at circuit breakers with a special emphasis on the Eaton's most technologically advanced circuit breaker, the Power Defense molded case circuit breaker.

How does Eaton circuit breaker work?

Eaton’s residential, miniature and molded case circuit breakers utilize over-toggle mechanism. The two-step stored energy mechanism is used when a large amount of energy is required to close the circuit breaker and when it needs to close rapidly. The major advantages of this mechanism are rapid reclosing and safety.