63 A MCCB built for motor-starting duty
Siemens SENTRON 3VA2163-7MS36-0JH0 is a 3-pole molded case circuit breaker rated for 63 A continuous current at ambient temperatures from 40 °C up to 70 °C — no derating needed across that whole span, which is unusual for an MCCB this size. The interrupting ratings are what make this thing serious: 330 kA at 240 V, 242 kA at 415 V, and 242 kA at 440 V — that's enough to handle most transformer-fed or generator-backed fault currents in industrial distribution.
The 105 mm width and 86 mm depth fit standard SENTRON 3VA panel footprints; it's a direct bolt-on for the 3VA2163 base switch. Power loss is only 4 W, so heat buildup in a dense panel stays manageable. And the shunt trip release lets you remote-trip it from an emergency stop or safety relay.