The Siemens SENTRON 3VA2063-5HN36-0AD0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, designed for line protection in industrial distribution panels. Its 187 kA interrupting capacity at 240 V and 121 kA at 415 V give it the headroom to clear high-fault conditions without cascading upstream — a key consideration when coordinating selective tripping on a main or feeder breaker.
Breaking capacity and thermal performance
This MCCB delivers 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 3 kA at 690 V. That voltage-dependent curve is typical of a current-limiting design — the arc extinction method changes effectiveness above 500 V, so the 690 V rating drops sharply. For a 480 V panel (common in North American industrial plants), the 75.6 kA figure is the one to size against the available fault current. The continuous current rating holds at 63 A across the entire ambient temperature range from 40 °C to 70 °C — no derating needed. That simplifies panel layout if the breaker sits near other heat sources inside a sealed enclosure. Power loss is 5.4 W maximum.
At 105 mm wide, 181 mm tall, and 86 mm deep, this breaker fits the standard SENTRON 3VA mounting footprint.
Auxiliary switching and options
This variant ships with three auxiliary switches (HQ type) integrated. The base switch assembly part number is 3VA20635HN360AA0.