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Introduction of panel printing
01: Family S 200 = MCBs
02: H for Home
03: Number of poles, 1P, 1P+N, 2P, 3P, 3P+N, 4P
04: Breaking capacities, T=3kA, L=4.5kA, None=6kA
05: Wiring diagrams to prevent wrong connection on all pole versions
06: Characteristic B and C
07: Rated current from 6A to 63A
09: Indication of MCB rated voltage
10: Indication of MCB breaking capacity and limiation class
Circuit Breaker definiation
A circuit breaker is a device to isolate a circuit during an overcurrent event without the use of a fusible element, is a resettable protective device that protects against two types of overcurrent situations: overload and short circuit.
Magnetic trip unit for short circuit protection
This magnetc trip unit is composed of an electromagnetic and an armature.
Components of a magnetic trip unit
When there is a short circuit, a high magnitude of current passes through the coils creating a magnetic field that attracts the movable armature towards the fixed armature, the hammer trip is pushed against the movable contact and the contacts are opened.
Short circuit selectivity
In the case of short circuit, selectivity exists up to the values indicated, limited or no sensitivity at all possible in the overload range with thermal tripping.