The Eaton Industries NZM1 circuit breaker features four poles, a rated continuous current (In = Iu) of 20 A, and a rated voltage of 690V. Its nominal disconnecting capacity (Icu) at 400V is 50kA. The device has an overload protection setting range of 15 – 20A and an instantaneous short circuit setting of 350A. Designed to be installed as a fixed device, it is equipped with a box terminal and is approved under the standard IEC. Its primary protective function includes both system and cable protection.
Specifications
Rated permanent current Iu (A) : 20
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) : 15 A to 20 A
Adjustment range short-term delayed short-circuit release (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 350 A to 350 A
Integrated earth fault protection : No
Type of electrical connection of main circuit : Frame clamp
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 : Yes
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 : No
Degree of protection (IP) : IP20
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