The Eaton Industries NZMB S power circuit breaker features a nominal continuous current Iu of 63A and a nominal tripping capacity Icu at 400 53kA. Its overload protection setting range is 380 – 630A and un-delayed short-circuit setting range is also 380 – 630A. The main circuit connection method is a screw connection and this device includes three poles. It is part of the NZM..-S..CNA series circuit breakers, which are designed to cover all application cases in just four compact sizes. These are modular in design for flexible mounting and feature magnetic short-circuit release in conjunction with an overload relay. This series also includes circuit breakers with short-circuit release but without an overload trip. These switches conform to UL/CSA as well as IEC regulations and the rating plate contains IEC switching performance values.
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) : 63
Rated operation power at AC-3, 230 V (kW) : 18.5
Rated operation power at AC-3, 400 V (kW) : 30
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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