The EVS20H4MW6A is a 4-pole drawout circuit breaker from the EasyPact EVS range, rated 2000 A continuous at 40 °C with an electronic trip unit (EVS Trip System6A). IEC 60947-2 Category B utilisation confirms it is designed for selectivity (discrimination) with downstream breakers, so a fault on a branch clears without tripping this main breaker.
Drawout mounting and panel integration
Drawout mounting means the breaker slides in and out of a fixed cradle — no need to disconnect power cables for removal or replacement. This is standard for main breakers where uptime matters: pull the breaker for maintenance or swap without de-energising the bus. Mounting support is a rail or base plate; connection is rear with a 115 mm pitch without spreader. Vertical or horizontal connection orientation gives flexibility in cabinet layout. Dimensions: 556 mm wide × 439 mm high × 395 mm deep — verify the cubicle depth before specifying.
Protection and trip unit
The electronic trip unit provides overload (long-time), instantaneous short-circuit, short-time short-circuit, and earth-fault protection. The 20-minute thermal memory means the trip curve accounts for prior heating — important when re-energising after a fault, preventing nuisance trips on a still-hot cable. Fault indication covers internal fault, overload, short-circuit, and earth fault on the digital display. Maximum breaking time is 25 ms — fast enough to limit let-through energy for downstream equipment.