The Eaton Industries NZMB A is a circuit-breaker installed as a fixed built-in device. It has a rated current, or nominal uninterrupted current, of 40A and a rated voltage of 440V. The device has a nominal tripping capacity of 25kA at 400. The overload protection setting range is between 32-40A. Additionally, the un-delayed short circuit setting range lies between 320-400A. The breaker is 3-pole, with a switching capacity of 400/415V at 50Hz (Icu). It is approved by IEC standards and provides both system and cable protection.
Specifications
Rated permanent current Iu (A) : 40
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) : 32 A to 40 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 320 A to 400 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 : No
Degree of protection (IP) : IP20
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