• $10

Circuit Breaker

Futina circuit breaker for sale is mainly used in AC 50Hz/60Hz, rated working voltage 230V/400V, rated current to 63A and below. It is mainly applied at office building, residence, for lighting, power distribution and overload and short circuit protection of equipment.  As a specialized circuit breaker supplier, Futina offers different type of circuit breaker, including MCB Miniature Circuit Breaker RCCB Residual Current Circuit Breaker, who provide the safety environment to all over the world.


Benefits of Futina’s Circuit Breaker

High Breaking Capacity




Mechanical Life


10000 times


Wide Range Working Temperature




How does Circuit Breakers Work?



latch Arrangement

It consists of a bimetallic strip and a plunger arrangement inside. Also, there is a latch arrangement made to hold the contacts closed, when it is turned ON.


Heated Up

The bimetallic strip is designed to carry a specific amount of current through it. When the current flowing through it exceeds the limit, the bimetallic strip gets heated up and it bends.



As it bends, it knocks down the latch holding the contacts. Higher the current faster shall be the operation.


Maximum Limit

Similarly, during short circuits, the current flowing through the miniature circuit breaker shall be several times the maximum limit.


Opens the Contacts

This activates the plunger arrangement instantaneously, which in turn knocks down the latch and opens the contacts. This is how a miniature circuit breaker works.