The Eaton Industries NZMB S power circuit breaker is suitable for the IEC market and is designed for a nominal continuous current Iu of 80A. It has a nominal breaking capacity Icu at 400 53kA with an adjustable overload protection setting range of 480 – 800A, and an adjustable instantaneous short-circuit setting range of 480 – 800A. The main current circuit has a screw connection, and the circuit breaker has three poles. The NZMB S series only requires four compact sizes to cover all application cases, offering flexible mounting with its modular function groups. Equipped with a magnetic short-circuit release in association with an overload relay and a short-circuit release without overload trip, this circuit breaker meets all the requirements of the AC-3 switching category.
Specifications
Overload release current setting (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 8 A to 44328 A
With thermal protection : No
Phase failure sensitive : No
Switch off technique : Magnetic
Rated operating voltage (V) : 440 V to 440 V
Rated permanent current Iu (A) : 80
Rated operation power at AC-3, 230 V (kW) : 22
Rated operation power at AC-3, 400 V (kW) : 45
Type of electrical connection of main circuit : Other
Type of control element : Rocker lever
Device construction : Built-in device fixed built-in technique
With integrated auxiliary switch : No
With integrated under voltage release : No
Number of poles : 3
Rated short-circuit breaking capacity lcu at 400 V, AC (kA) : 18.5
Degree of protection (IP) : IP20
Height (mm) : 145
Width (mm) : 90
Depth (mm) : 88
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