The Siemens SENTRON 3VA2063-5HN32-0KC0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, built for line protection in distribution panels. Its interrupting capacity reaches 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, so it clears high-fault currents across common low-voltage networks without cascading upstream.
Ratings in context
The 63 A rating holds steady across the full ambient range from 40 °C to 70 °C — no derating needed as the panel warms, which simplifies panel layout when breakers are ganged in a closed enclosure. The interrupting ratings at 240 V (187 kA) and 415 V (121 kA) cover the typical fault-current levels at a service entrance or downstream sub-distribution board. At 690 V the rating drops to 3 kA, so this breaker is not the right choice for 690 V feeders with high fault potential.
Built-in accessories
This variant ships with a shunt trip (STL) for remote opening and two auxiliary switches (HQ) for status feedback — both factory-installed, saving panel-build labor and avoiding the need for add-on modules. No undervoltage release, no ground-fault monitoring, and no communication function are included. If those are needed, a different 3VA variant or an external relay is required.
Mounting and integration
Dimensions are 181 mm high, 105 mm wide, 86 mm deep — a standard 3-pole MCCB footprint that fits most Siemens SENTRON panelboards and third-party enclosures with a 105 mm module pitch.