The Eaton Industries NZMB S power circuit breaker has a rated continuous current Iu of 40A and a nominal disruption capacity Icu of 53kA at 400. Offering an overload protection setting range of 320-400A, as well as a short circuit interruption range of 320-400A, it provides robust and reliable protection options. It’s designed with a screw connection for the main circuit, and it features three poles. With four compact sizes, series NZM..-S circuit-breakers offer flexibility in mounting for various applications. They are equipped with a magnetic short-circuit release in conjunction with an overload relay, and a short-circuit release without overload trip. These circuit breakers meet 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 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) : 40
Rated operation power at AC-3, 230 V (kW) : 11
Rated operation power at AC-3, 400 V (kW) : 18.5
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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