The Eaton Industries MCCB circuit-breaker, designated NZM3, comprises of 3 poles, with an effective switching capacity of 1000 V and 50/60 Hz. It features an interrupted current value and rated current equal to 630 A, defined as Ics and In = Iu respectively. The unit is designed for fixed installation and employs a screw connection. Compliant with IEC standards, this MCCB is intended for various protective functions, including system, cable, selectivity, and generator protection.
Specifications
Rated permanent current Iu (A) : 630
Rated voltage (V) : 1000 V to 1000 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 150
Overload release current setting (A) : 315 A to 630 A
Adjustment range short-term delayed short-circuit release (A) : 472 A to 4410 A
Adjustment range undelayed short-circuit release (A) : 1260 A to 5040 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 : 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 : 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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