Eaton NZMC3 4 Pole 320A Circuit Breaker Withdrawable Unit – 113517

The Eaton Industries NZM3 MCCB is a 4-pole power circuit breaker with a nominal uninterrupted current (In=Iu) of 320A and a nominal voltage of 690V. It has a switching capacity at 400/415V 50Hz (Icu) of 36kA and an installation type that is withdrawable. This device offers a range of overload protection settings from 250 to 320A and un-delayed short circuit settings between 1920 to 19200A. Its main functions include system and cable protection. This equipment is built as an insertable device and it utilizes a screw connection. It is standard and approved in accordance with IEC regulations.

Specifications

Rated permanent current Iu (A) : 320
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) : 250 A to 320 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 1920 A to 19200 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