The Eaton Industries NZM2 circuit breaker is a 3-pole system with a switching capacity of 50 kA at 400/415 V 50 Hz. Its nominal continuous current Iu is 250A, with a rated voltage of 690V. It offers an adjustable overload protection range of 125 – 250A and a short-time delayed setting range of 250 – 2500A, together with an instantaneous short circuit setting of 3000A. The system is designed for fixed installations and uses a screw connection. It complies with IEC standards and offers protective functions such as cable, system selectivity, and generator protection.
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 : Screw connection
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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