Small circuit breaker (English name: MiniatureCuitBreaker), also known as MicrocircuitBreaker, is suitable for AC 50/60Hz rated voltage 230/400V, and the rated current to the 63A line is used for overload and short circuit protection. It can also be used as normal under normal circumstances.The non -frequent operation conversion of the line.
Small circuit breaker installation
Small circuit breakers are generally installed in the power distribution box (the guide rail installation in the power distribution box).If it is 4P, it is three fires and zero. The position of the zero fire line is okay, but it is generally connected by the left fire and right.
Small circuit breaker price
Small circuit breaker working principle
Overload protection -the realization of the overload protection function of the circuit breaker is to use the principle of bending as regular as the temperature rises as the temperature rises. After the small circuit breaker is closed, it is under normal working state.The current of the current is heated. The thermal expansion coefficients of the two metals are different and the normal current (1.13IN) has a small curve angle. Therefore, the thrust is not enough to remove the deduction mechanism.(1.45in), the twin -metal sheet angle is large and the lever in the deduction mechanism is enough to promote the deduction mechanism, so that the small circuit breaker off -load protection has played a role of super load protection.
Small circuit breaker selection
1. Select the rated current with a slightly closer to the actual load current of the small circuit breaker: the selected rated current (the rated current can only be greater than the load current), and you must not be blindly select.When breaking, you must tighten the short circuit to protect the string when selecting the switch.2. Small circuit breakers with wire diameter with outer wiring must be selected as required: whether the short -circuit current that can output the movement of leakage circuit breakers has an important relationship with the power distribution diameter of the leakage.In the lower diameter, the larger the short -circuit current of the line diameter, the smaller the short -circuit current of the line diameter, the smaller the short -circuit current.
Small circuit breaker model
Divided by the rated current: 1, 2, 3, 4, 5, 6, 10, 16, 16, 20, 25, 32, 40, 50, 63, 100 (a), etc., Two poles, trigelies, four poles; divided by the form of cutting off: C (5ln ~ 10ln), D type (10ln ~ 16LN).

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