NZM circuit-breakers  [t-head1-first]

These circuit-breakers protect electrical equipment against thermal overloading and in the event of a short circuit. They cover the rated current range from 20 to 1600 A.

Depending on the version, they have additional protective functions such as fault-current protection, earth-fault protection or the capability for energy management by recognition of load peaks, and deliberate load shedding.

Circuit-breakers NZM are distinguished by their compact shape and their current-limiting characteristics.

Switch-disconnectors without tripping units are available in the same sizes as the circuit-breakers and can be fitted with additional shunt or undervoltage releases to suit on the versions concerned.

Circuit-breakers NZM and switch-disconnectors are built and tested to the specifications in IEC/EN 60947.

They feature isolating characteristics. In conjunction with a locking device, they are suitable for use as main switches to IEC/EN 60204.

The electronic releases of frame sizes NZM2, NZM3 and NZM4 feature communication capabilities.

The current states of the circuit-breaker onsite can be visualized via a Data Management Interface (DMI) or via digital output signals. Additionally, the circuit-breakers can be connected to a network, e.g. PROFIBUS-DP.

NZM1	NZM2	NZM3	NZM4