The Schneider Electric EVS12H3MW5A is a 3-pole drawout circuit breaker from the EasyPact EVS range, rated 1250 A at 40 °C and built to IEC 60947-2. Its electronic trip unit (EVS Trip System5A) provides overload protection with a 20-minute thermal memory before and after tripping, plus instantaneous and short-time short-circuit protection. The digital display shows fault type (internal fault, overload, short-circuit), which cuts troubleshooting time for field service techs on a live line.
The 1250 A trip unit rating and 1250 A CT rating match — no derating mismatch to watch. The 65 kA Icu at 440 V AC and 50 kA at 690 V AC define the maximum fault current the breaker can clear; for a site electrical engineer coordinating selectivity, the 25 ms maximum breaking time is the window downstream breakers must ride through. The 20-minute thermal memory before and after tripping prevents nuisance reclosure on a hot conductor; the contact position indicator gives a positive visual confirmation of open/closed state for lockout-tagout procedures.