What this MCCB is and what the key ratings mean for fit
The Siemens SENTRON 3VA1180-4EF32-0JC0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 80 A continuous current (Iu) at 40 °C through 50 °C, then derating to 72 A at 70 °C — the full thermal curve is on record so you can size it for a warm enclosure without guessing. Its interrupting capacity reaches 121 kA at 240 V, 75.6 kA at 415 V, and 52.5 kA at 440 V — figures that cover most industrial service-entrance and feeder applications in North American and IEC 60947-2 networks; at 690 V the rating drops to 11.9 kA, so verify fault current at that voltage level. The TM240 thermal-magnetic overcurrent release handles the overload and short-circuit protection without a separate trip unit order; a shunt trip (STL) auxiliary release is built in, and two HQ auxiliary switches (3VA9688-0BL32) are included for status feedback to a PLC or safety relay.
Mounting dimensions and enclosure integration
At 70 mm deep, 76.2 mm wide, and 130 mm tall, this MCCB fits standard SENTRON panel cutouts and leaves room for side-by-side pole fill on a DIN rail or direct-mount backplate; the IP40 front protection suits enclosed distribution boards where splash or tool access is the concern. No communication function or phase-failure detection is integrated — this is a straightforward line-protection breaker, not a power-monitoring device; if you need remote trip indication, the auxiliary switches handle that at the I/O level.