The Eaton Industries Circuit-breaker NZM2 is designed with a 3-pole switching capacity, optimized for 400/415V 50Hz systems with an interrupting capacity (Icu) of 50 kA. The device features a rated current equal to its rated uninterrupted current, both at 250A. It’s primarily intended for fixed installations and accommodates box terminals. Endorsed by IEC standards, this circuit-breaker provides protection for systems, cables, and generators with its selectivity function.
Specifications
Rated permanent current Iu (A) : 250
Rated voltage (V) : 690 V to 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 50
Overload release current setting (A) : 125 A to 250 A
Adjustment range short-term delayed short-circuit release (A) : 250 A to 2500 A
Adjustment range undelayed short-circuit release (A) : 3000 A to 3000 A
Integrated earth fault protection : No
Type of electrical connection of main circuit : Frame clamp
Device construction : Built-in device fixed built-in technique
Suitable for DIN rail (top hat rail) mounting : No
DIN rail (top hat rail) mounting optional : Yes
Number of auxiliary contacts as normally closed contact : 0
Number of auxiliary contacts as normally open contact : 0
Number of auxiliary contacts as change-over contact : 0
With switched-off indicator : No
With integrated under voltage release : No
Number of poles : 3
Position of connection for main current circuit : Front side
Type of control element : Rocker lever
Complete device with protection unit : Yes
Motor drive integrated : No
Motor drive optional : Yes
Degree of protection (IP) : IP20
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