The Siemens 3RV1383-7JN10 is a SIRIUS molded-case circuit breaker (MCCB) rated for 630 A continuous current, designed specifically for starter combinations. It delivers 100 kA breaking capacity at 400 V AC and 240 V AC, 65 kA at 500 V AC, and 30 kA at 690 V AC — numbers that tell you it handles high-fault industrial feeders without cascading upstream. The electronic short-circuit trip gives precise, repeatable response across the fault curve.
Panel integration & mounting
Mounts via screw fixing in any position — no DIN-rail clip here, so plan for direct panel or backplate drilling. The footprint is 210 mm wide by 268 mm tall by 103.5 mm deep, with zero clearance required at the back or sides for airflow or arc chutes. That 103.5 mm depth matters when you're fitting it into a shallow enclosure or a gland-plate layout. IP20 on the front means it's finger-safe once the panel door is closed; the screw-type terminals on both main and auxiliary circuits accept standard ring or fork lugs.
Duty & ratings
The AC-3 operational current at 400 V matches the continuous rating at 630 A, so motor-switching duty doesn't force a derate. Maximum switching frequency is 15 operations per hour — fine for pump, fan, and compressor starts, not for rapid cycling. Rated operational voltage spans 20 to 690 V AC, with surge voltage resistance at 8 kV. Ambient operating range is -25 to +50 °C; storage and transport handle -40 to +70 °C. Shock resistance is 12 g for 11 ms, and installation altitude is limited to 2,000 m above sea level.