The Siemens SENTRON 3VA2063-5KP32-0AC0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, designed for line protection in distribution panels. Its 121 kA breaking capacity at 415 V AC means it can safely interrupt fault currents up to that level without upstream cascading — critical for high-fault installations like industrial main feeders or large motor control centers.
The adjustable thermal-magnetic trip range spans 95 A to 756 A, giving the specifying engineer flexibility to match the breaker to downstream load without swapping frames. At 240 V the interrupting rating climbs to 187 kA; at 500 V it still holds 75.6 kA. Only at 690 V does it drop to 3 kA — a reminder that this frame is optimized for 400–500 V class systems, not 690 V industrial grids.
The breaker measures 105 mm wide by 181 mm tall by 86 mm deep — a standard 3-pole MCCB footprint that fits Siemens SENTRON panelboards and most DIN-rail-mount enclosures with appropriate adapters. The internal basic switch is pre-configured as 3VA20635KP320AA0, and the auxiliary switch bay carries two HQ-style aux switches, simplifying integration into a control circuit that needs breaker status feedback.
Power dissipation is 5.4 W maximum — low enough that thermal derating in a sealed enclosure is minimal, but worth checking against the panel's total heat budget if multiple breakers are ganged. The operating temperature range spans -25 °C to 70 °C, with storage from -40 °C to 80 °C, covering most indoor and sheltered outdoor installations.