The Siemens 3VA2163-7MS32-0JC0 is a SENTRON molded case circuit breaker (MCCB) in the starter protection version, rated for 63 A continuous and packing 330 kA interrupting capacity at 240 V — that's the figure that governs fault clearance on high-capacity transformer secondaries or bus-duct feeds. The 3-pole body carries an ETU310M electronic trip unit with a shunt trip release (STL) and two HQ auxiliary switches, so it fits motor starter combos where you need remote trip signaling and a separate undervoltage or shunt path.
Interrupting capacity across the voltage range
This MCCB delivers 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V. The drop at 690 V is sharp — if your plant runs 690 V distribution, the 52.5 kA still covers most motor branch circuits, but verify the available fault current at the panel. The 242 kA at 415 V is the number most European industrial panels care about; it clears high-fault scenarios without cascading upstream.
Thermal derating and ambient limits
Rated 63 A from 40 °C through 50 °C ambient; above that it steps down: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. If the panel sits near ovens or in a non-vented enclosure, use the 55 °C or 60 °C row for your continuous load calculation. The operating range spans -25 °C to 70 °C; storage goes -40 °C to 80 °C, so it survives unheated warehouses.
Dimensions and panel fit
Depth 86 mm, width 105 mm, height 181 mm — standard 3-pole MCCB footprint for SENTRON 3VA2 frames. The 105 mm width matches the typical 4-module DIN-rail pitch, so it slots into a multi-breaker lineup without odd spacing. Depth of 86 mm leaves clearance behind a 200 mm deep enclosure door.