The Eaton Industries NZMB A is a 4-pole circuit breaker with a switching capacity of 400/415V 50Hz (Icu): 25kA. Its distinctive features include a rated current equivalent to rated uninterrupted current (In=Iu): 250A. This circuit breaker is designed as a built-in fixed device, connected via screw installation. It is in compliance with IEC standards and primarily serves the protective function in system and cable protection. The overload protection setting range is from 200-250A, while the undelayed short circuit setting range is between 6-10A.
Specifications
Rated permanent current Iu (A) : 250
Rated voltage (V) : 440 V to 440 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 25
Overload release current setting (A) : 200 A to 250 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 6 A to 10 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 : 4
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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