The Eaton Industries MCCB circuit-breaker features a nominal continuous current of 250A, nominal voltage of 690V, and a nominal breaking capacity of 150kA at 400. It has an overload protection setting range of 250A and a short-delay setting range of 1500 – 2500A, alongside an inrush current delay-free setting range of 6 – 10A. This circuit-breaker conforms to UL/CSA and IEC regulations, as mentioned on its rating plate. The NZM..-AF..NA series has four compact sizes for all application scenarios, offering flexible mounting due to their modular function groups. It includes thermomagnetic releases for system and cable protection, and also features fixed overload releases.
Specifications
Rated permanent current Iu (A) : 250
Rated voltage (V) : 690 V to 690 V
Rated short-circuit breaking capacity lcu at 400 V, 50 Hz (kA) : 150
Overload release current setting (A) : 250 A to 250 A
Adjustment range short-term delayed short-circuit release (A) : 1500 A to 2500 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 : 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 : Yes
Degree of protection (IP) : IP20
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