MCBs protect cables against damage due to overload and short circuits: In the event of dangerously high currents, the circuit breaker’s bimetallic thermal release will disconnect the power supply. In the event of a short circuit, the electromagnetic release will disconnect the power supply in a timely manner.
A design that is standard-compliant and quality-tested
Eaton’s AZ miniature circuit breakers are type-tested and approved according to IEC/EN 60947-2 (VDE 0660-101). This standard applies to circuit breakers in circuits with rated voltages up to 1,000 V AC, or up to 1,500 V DC.
The right MCB for every application
Circuit breakers with tripping characteristic B are the standard MCB type used for lighting and socket circuits. For circuits with high peak currents (e.g. motors and luminaire banks) devices with tripping characteristic C are used. Circuit breakers with tripping characteristic D are used for inductive and capacitive loads (solenoid valves, transformers etc.).