The Eaton Industries NZMB S circuit-breaker is designed for a nominal continuous current of 125A, and a nominal cutoff power of 53kA at 400, providing effective power management options. The overload protection range spans from 960 – 1600A along with a similar range for undelayed short-circuit. The primary power circuit is connected via screw connection, centralizing control into three poles. A notable feature is its magnetic short-circuit release with an overload relay and a short-circuit release without an overload trip. Rated to conform to UL/CSA as well as IEC regulations, the IEC switching performance values are conveniently included on the rating plate.
Specifications
Overload release current setting (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 8 A to 14 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) : 125
Rated operation power at AC-3, 230 V (kW) : 37
Rated operation power at AC-3, 400 V (kW) : 55
Type of electrical connection of main circuit : Screw connection
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) : 195
Width (mm) : 105
Depth (mm) : 149
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