The Eaton Industries MCCB circuit breaker, with a nominal continuous current of 250A and nominal voltage of 440V, covers all application cases with just four compact sizes, making them suitable for global markets. These circuit breakers are flexible to mount, thanks to modular function groups, and come with thermomagnetic releases for systems and cable protection. They also include fixed overload releases and settings for delayed short circuiting between 1500 – 2500A, and immediate short circuiting between 6 – 10A. They conform to UL/CSA and IEC regulations, with the rating plate containing IEC switching performance values.
Specifications
Rated permanent current Iu (A) : 250
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) : 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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