The Eaton Industries MCCB circuit-breaker NZM3 is a 4 pole power switch with a rated uninterrupted current (In = Iu) of 400A. It has a nominal voltage of 690V and a switching capacity of 150kA at 400/415V 50Hz. This device is able to adjust the overload protection within a range of 200 – 400A, offering temporary delay settings between 400 – 4000A, and no-delay short circuit settings between 800 – 4400A. Its installation type is withdrawable with screw connection. It abides by IEC standards and provides system, cable, selectivity and generator protection as part of its protective functions.
Specifications
Rated permanent current Iu (A) : 400
Rated voltage (V) : 690 V to 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 150
Overload release current setting (A) : 200 A to 400 A
Adjustment range short-term delayed short-circuit release (A) : 400 A to 4000 A
Adjustment range undelayed short-circuit release (A) : 800 A to 4400 A
Integrated earth fault protection : Yes
Type of electrical connection of main circuit : Screw connection
Device construction : Built-in device slide-in technique (withdrawable)
Suitable for DIN rail (top hat rail) mounting : No
DIN rail (top hat rail) mounting optional : No
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 : 4
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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