The Siemens SENTRON 3VA2220-5MN32-0KL0 is a 3-pole molded case circuit breaker rated for 200 A continuous at 40 °C, with a maximum breaking capacity of 187 kA at 240 V. It is designed specifically for motor protection, incorporating phase failure detection and a shunt trip release for remote tripping. The auxiliary switch configuration includes two auxiliary switches, one trip alarm switch, and one electrical alarm switch, giving the panel builder a full set of status signals without adding external blocks.
Breaking capacity across voltage levels
The interrupting rating drops with system voltage: 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 5.2 kA at 690 V. For a 480 V panel, the 75.6 kA figure at 500 V is the relevant SCCR benchmark — sufficient for most industrial main or feeder applications where the available fault current stays under that threshold.
Current rating holds across the full temperature range
The breaker carries 200 A without derating from 40 °C all the way up to 70 °C ambient. That is unusual — most MCCBs start to derate above 40 °C. For a hot panel or a machine near a furnace, this means you do not have to oversize the frame to hold the load current.
Motor protection design with integral phase failure detection
The product design is explicitly for motor protection, and it includes phase failure detection as a standard function. That means it will trip on a lost phase without needing a separate phase-monitor relay — one less component to wire and troubleshoot on a motor branch circuit.
Auxiliary and alarm switch complement
The breaker ships with two auxiliary switches, one trip alarm switch, and one electrical alarm switch, plus a shunt trip release for remote opening. That is a full house of status contacts — enough to signal open/closed, trip, and alarm conditions to a PLC or annunciator without adding external switch modules.