The Eaton Industries NZMB A is a circuit-breaker designed according to IEC/EN60947-2 standards. It features screw connections and screw fixing, with a Ui of 690V and a degree of protection of IP20. The device is finger proof as per VDE 0106 T. 100. It comes with an adjustable overload release Ir ranging from 0.8 to 1 x In. The short-circuit release Ii is adjustable, ranging from 6 to 10 x In and there is a permanently set short-circuit release Ii as a limitation. The unit’s nominal continuous current Iu is 125A and the nominal voltage is 440V. Its nominal cut-off capacity at Icu at 400 is 25kA. The overload protection setting range is 100-125A, while the instantaneous short circuit setting range is 750-1250A. The device is a fixed installation construction type. Available accessories include auxiliary contact modules, voltage release, remote operator, mounting accessories, terminal type, and system housing adapter.
Specifications
Rated permanent current Iu (A) : 125
Rated voltage (V) : 440 V to 440 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 25
Overload release current setting (A) : 100 A to 125 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 750 A to 1250 A
Integrated earth fault protection : No
Type of electrical connection of main circuit : Screw connection
Device construction : Built-in device fixed built-in technique
Suitable for DIN rail (top hat rail) mounting : No
DIN rail (top hat rail) mounting optional : Yes
Number of auxiliary contacts as normally closed contact : 0
Number of auxiliary contacts as normally open contact : 0
Number of auxiliary contacts as change-over contact : 0
With switched-off indicator : No
With integrated under voltage release : No
Number of poles : 3
Position of connection for main current circuit : Front side
Type of control element : Rocker lever
Complete device with protection unit : Yes
Motor drive integrated : No
Motor drive optional : Yes
Degree of protection (IP) : IP20
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