COELME isolation knife




– Isolating knives:

+ The primary task of a isolating knife is to create an insulating gap visible between live parts and a circuit breaker. Isolation knife only for switching when there is no current;

+ Isolation knives are made with different voltage levels, 1-phase or 3-phase, for indoor and outdoor installations;

+ Isolation knives are selected with rated conditions: current and pressure with dynamic and thermal stability conditions.

– Fuse:

Fuses are electrical appliances that protect the circuit when short circuiting. Cutting time of fuse depends on the material of the fuse. The chi bridge is a simple, low-cost protective device, but the sensitivity is only effective when the current is many times larger than the norm (mainly short-circuit current).


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