The Eaton Industries NZMB S power circuit breaker is suitable for global markets, covering all applications with just four compact sizes. It has magnetic short-circuit release in conjunction with an overload relay and a short-circuit release that lacks overload trip. The nominal continuous current Iu is 80A, while the nominal breaking capacity Icu at 400 is 53kA. It has an overload protection adjustment range of 480 – 800A, and immediate short circuit adjustment range from 480 – 800A. This 3-pole device features screw connection for the main circuit. The switches conform to UL/CSA and IEC regulations as indicated 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) : 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 : 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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