The Siemens SENTRON 3VA2163-6KQ32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, with a breaking capacity of 242 kA at 240 V and 187 kA at 415 V.
The 63 A rating is flat across the full operating temperature range from 40 °C to 70 °C — no derating needed as the panel warms up, which simplifies sizing in a crowded enclosure. Rated insulation voltage of 800 V and a minimum breaking current of 95 A up to a maximum of 756 A define the operating window for the internal trip unit.
The breaker measures 105 mm wide, 181 mm tall, and 86 mm deep — a standard 3-pole MCCB footprint that fits most DIN-rail or screw-mounted panel layouts. The 4 W maximum power loss is low enough that ventilation slots in a typical IP54 enclosure handle the heat without forced cooling. Operating temperature range of -25 °C to 70 °C and storage range of -40 °C to 80 °C cover unheated warehouses and outdoor cabinets in most climates.