The Eaton Industries NZMB A is a 4-pole circuit-breaker with a rated uninterrupted current (In = Iu) of 40A. It supports a nominal voltage of 440V and a switching capacity (Icu) at 400/415V 50Hz of 25kA. The device’s protective function is focused on system and cable protection. It offers an overload protection setting range of 32-40A and an immediate short-circuit setting range of 8-10A. The circuit-breaker’s build form is of a fixed installation type with a box terminal and it is standard/approved according to IEC regulations.
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) : 8 A to 10 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 : 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 : No
Degree of protection (IP) : IP20
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