This Eaton Industries MCCB (Moulded Case Circuit Breaker), identified as NZM3, features 4 poles and a switching capacity of 400/415 V 50 Hz (Icu), with a maximum interruption capacity of 50kA. Its rated current, which is equivalent to its uninterrupted current, is 400 A (In = Iu). This device is intended for a fixed installation type and includes a screw connection. It meets IEC standard and offers the protective function for both system and cable.
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) : 50
Overload release current setting (A) : 200 A to 400 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 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 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 : 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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