The Eaton Industries NZMB M circuit-breaker, with a continuous current rating of 80A and a nominal cut-off power of 53kA at 400, boasts an overload protection setting range of 480 – 800A and a short circuit setting range of 480 – 800A. This three-pole device utilizes a screw connection for the main circuit. Equipped with thermomagnetic releases for motor protection, it exhibits phase-failure sensitivity and a tripping class of 10A. Adhering to IEC/EN 60947-4-1 and IEC/EN 60947-2 standards, this circuit-breaker satisfies all AC-3 switching category requirements. Despite its compact size, this module can be mounted flexibly across various applications.
Specifications
Overload release current setting (A) : 63 A to 80 A
Adjustment range undelayed short-circuit release (A) : 640 A to 1120 A
With thermal protection : Yes
Phase failure sensitive : Yes
Switch off technique : Thermomagnetic
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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