The Eaton Industries MCCB motor circuit breaker is a compact device with dimensions of 185x346x260mm, designed for built-in slide-in device construction. It has a nominal continuous current (Iu) of 500A and utilizes screw connection for the main circuit. The device operates on a magnetic cut-off technique, offering an IP20 protection level and a working voltage (measuring voltage) of 690V. In combination with the overload relay, it features a magnetic short-circuit release and short-circuit release without an overload trip. Note that these circuit breakers fulfill all the requirements of the AC-3 switching category.
Specifications
Overload release current setting (A) : 0 A to 0 A
Adjustment range undelayed short-circuit release (A) : 6 A to 10 A
With thermal protection : No
Phase failure sensitive : No
Switch off technique : Magnetic
Rated operating voltage (V) : 690 V to 690 V
Rated permanent current Iu (A) : 500
Rated operation power at AC-3, 230 V (kW) : 160
Rated operation power at AC-3, 400 V (kW) : 250
Type of electrical connection of main circuit : Screw connection
Type of control element : Rocker lever
Device construction : Built-in device slide-in technique (withdrawable)
With integrated auxiliary switch : No
With integrated under voltage release : No
Number of poles : 3
Rated short-circuit breaking capacity lcu at 400 V, AC (kA) : 22.5
Degree of protection (IP) : IP20
Height (mm) : 260
Width (mm) : 185
Depth (mm) : 346

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