The Siemens SENTRON 3VA2063-5JQ32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous at up to 70 °C ambient, with an adjustable overload trip setting spanning 95 A to 756 A — meaning a single frame covers motor and feeder protection across a wide current band without swapping the breaker body. Breaking capacity hits 187 kA at 240 V AC, 121 kA at 415 V AC, and 75.6 kA at 500 V AC — figures that put it in the high-interrupting class for industrial service entrances and large panelboard feeders where fault current runs high.
A communication function is built in, supporting integration into higher-level monitoring or energy management systems without a separate gateway module.
The basic switch variant 3VA20635JQ320AA0 is the core breaker element; the -0AG0 suffix adds the auxiliary and alarm switches, so if your BOM already lists the base switch, confirm your auxiliary contact count before substituting.
The adjustable overload range (95–756 A) means one breaker covers everything from a small motor feeder to a main distribution tie — set the trip band with the front dial, no internal component swap. Maximum power loss is 5.4 W, low enough that adjacent breakers in a multi-unit panel stay within their thermal limits without forced cooling.