The Siemens SENTRON 3VA2063-5HN32-0AB0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current, with a breaking capacity of 187 kA at 240 VAC. That 187 kA figure at 240 V tells you this breaker is sized for high-fault-current main or feeder duty — not a downstream branch device. At 415 VAC it still interrupts 121 kA, and at 690 VAC the rating drops to 3 kA, so the voltage-dependent curve governs where you place it in the hierarchy.
What the ratings mean for fit
Rated insulation voltage is 800 V, which covers 480 V and 600 V class systems with headroom. The 63 A continuous rating holds flat from 40 °C through 70 °C ambient — no derating curve to chase in a warm panel. Power loss at rated current is 5.4 W maximum, manageable for enclosure heat calculations. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. This is a line-protection design — no undervoltage release, no ground-fault monitoring, no communication function built in. It carries two auxiliary switches (HP type) for status feedback. The supplied basic switch order code is 3VA20635HN320AA0.
Panel integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard MCCB footprint for this class. The 3-pole block fits typical DIN-rail or panel-mount enclosures; the 86 mm depth leaves room for rear bus connections without crowding the gland plate. No trip indicator or voltage trigger on this variant.