REX12D-TA1-100-DC24V-8A

Circuit Breakers

A circuit breaker is an electrical device used to protect an electrical circuit from damage caused by excess current from an overload or short circuit. The REX12D-TA1-100-DC24V-8A circuit breaker is a thermal and hydraulic device that selectively interrupts an electrical circuit when too much current passes through. This device is typically housed in a cover and utilizes a spring mechanism which can be either manually or automatically reset.

Application Field

The application field of the REX12D-TA1-100-DC24V-8A circuit breaker is typically in vehicle-mounted control systems, motor controllers, electric motor starters, traffic control devices, and uninterruptible power supplies. It is capable of safely controlling a wide range of electrical applications including lighting, storage battery charging, instrumentation, and general switching. The circuit breaker can also be used in hazardous areas and can be used as an emergency power cut-off in fire situations.

Working Principle

The REX12D-TA1-100-DC24V-8A circuit breaker works by detecting the magnitude of the current passing through the circuit, and using that information to interrupt the current when the current passes through a predetermined threshold. When the current passes beyond the predetermined capacity, the circuit breaker trips and shuts off the current flow by breaking an arc, and isolating the circuit. If a short circuit is detected, the thermal and hydraulic components of the circuit breaker come into play, and the circuit breaker will typically shut off within a few milliseconds.

Once the current is interrupted, the circuit breaker can either be manually reset or it can be automatically reset. If manually reset, the user needs to switch off power and then release the handle from its trip position and reset it to the on position. If automatically reset, the circuit breaker will set itself back to the on position when the fault is cleared from the circuit and it is safe to turn electricity back on.