63 A MCCB with 187 kA interrupting capacity — line protection for high-fault panels
The SENTRON 3VA1163-5EF32-0HC0 is a 3-pole molded case circuit breaker rated 63 A at 40 °C and capable of interrupting 187 kA at 240 V — a figure that drops to 121 kA at 415 V and 75.6 kA at 440 V, so it handles high-fault-current points like transformer secondaries or large motor branch circuits without cascading upstream. The frame holds its full 63 A rating up to 50 °C; above that it derates linearly to 58 A at 70 °C, which matters for a sealed panel or a hot-aisle install. Insulation voltage is 800 V, so it's comfortable on 480/277 V or 600 V systems. Designed for line protection — meaning it's the main or feeder breaker, not a motor-protective device — and comes with a factory-fitted shunt trip (STL) plus two HQ auxiliary switches for remote status feedback. The shunt trip lets a safety PLC or emergency-stop circuit drop the breaker without a manual trip, which is common in machinery guarding or process interlock schemes.
DIN-rail footprint and panel fit
Dimensions are 130 mm high, 76.2 mm wide (3 inches), and 70 mm deep — a standard 3-pole MCCB footprint that mounts on DIN rail or direct-panel. The 70 mm depth means it clears most shallow enclosures, but leave room for the shunt-trip wiring and auxiliary-switch harness behind the breaker.