The Eaton Industries MCCB power circuit breaker, designated as NZM3, comes with three poles and exhibits a switching capacity of 400/415 V at a frequency of 50 Hz. Its interrupting capacity (Icu) is 36 kA, while the rated current, which is also the rated uninterrupted current (In = Iu), is set at 250 A. This device is designed for fixed installation and uses a screw connection for securing. It complies with IEC standards and provides protection specifically against short circuits.
Specifications
Rated permanent current Iu (A) : 250
Rated voltage (V) : 690 V to 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 36
Overload release current setting (A) : 0 A to 0 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 8 A to 14 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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