What it is and what it does
The Siemens SENTRON 3VA2216-7MS32-0KC0 is a 3-pole molded case circuit breaker (MCCB) rated for 160 A continuous at 40 °C, with a breaking capacity of 330 kA at 240 V AC — enough to handle high-fault-current service entrance or distribution panels where upstream transformer capacity is large. The 160 A rating holds steady from 40 °C all the way up to 70 °C, so no derating curve to chase in a warm enclosure. Rated insulation voltage is 800 V, and the breaker carries a shunt trip (STL) release plus two auxiliary switches (HQ design) factory-fitted — useful for remote trip indication or interlocking without adding a separate accessory module.
Breaking capacity across voltages
The interrupting ratings step down with system voltage: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V. That last figure at 690 V is the one to watch if you are feeding a 690 V drive or transformer secondary — the breaker is still usable there, but the available fault current must be verified against the 4.5 kA limit.
Panel fit and integration
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that drops into SENTRON panelboard or distribution-block layouts without reworking the gland plate. Maximum power loss is 19.7 W, so account for that in enclosure thermal calculations if the panel is densely packed.