The Eaton Industries NZMB A is a 3-pole circuit-breaker with a nominal continuous current Iu rating of 20A and a nominal voltage of 440V. It features a nominal cutoff power Icu at 400 of 25kA. This model offers an overload protection setting range of 15-20A and a delayed short-circuit setting range of 350A. The device features an inbuilt fixed installation and screw connection. Key protective function includes system and cable protection, and it is approved by international standards such as UL/CSA and IEC. At 60Hz, it has a switching capacity of 25kA for 480Y/277V, 18kA for 600Y/347V, and 25kA for 480V.
Specifications
Rated permanent current Iu (A) : 20
Rated voltage (V) : 440 V to 440 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 25
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 : 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 : 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 : 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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