The Eaton Industries MCCB (Moulded Case Circuit Breaker) is a notable 4-pole, circuit breaker (NZM3). It demonstrates a switching capacity of 400/415 V at a frequency of 50 Hz and an interrupting capacity (Icu) of 36 kA. Its rated current, which is synonymous with its rated uninterrupted current, is 500 A (In = Iu). Designed for flexible installation, it can be installed in a withdrawable method and features a screw connection. The product compliance is to the International Electrotechnical Commission (IEC) standards and it offers reliable system and cable protection.
Specifications
Rated permanent current Iu (A) : 500
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) : 400 A to 500 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 6 A to 10 A
Integrated earth fault protection : No
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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