The Siemens 3VA2063-8JQ36-0AA0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current in a 3-pole configuration, designed for line protection with integrated communication capability.
Breaking capacity and selectivity
This MCCB delivers a breaking capacity of 440 kA at 240 V, 330 kA at 415 V and 440 V, 220 kA at 500 V, and 52.5 kA at 690 V — figures that give a site electrical engineer substantial headroom for fault-current coordination downstream. Rated insulation voltage is 800 V, and the breaker maintains its full 63 A rating across the entire ambient temperature range from 40 °C to 70 °C — no derating required in a warm enclosure.
Physical fit and panel integration
Dimensions are 105 mm wide, 181 mm high, and 86 mm deep — a standard MCCB footprint that fits most distribution panelboards without reworking the gland plate or busbar layout. Operating temperature range is -25 °C to 70 °C, with storage from -40 °C to 80 °C, so the breaker handles both the heat inside a loaded panel and cold warehouse storage.
Lifecycle and sourcing reality
The lifecycle stage is listed as current — meaning this is an active, in-production part from Siemens, not a phase-out or NRND line.