What the ratings mean for fit
The 3VA1163-5EF32-0DH0 is a SENTRON 3VA1 molded case circuit breaker rated 63 A continuous at 40 °C through 50 °C, with a slight thermal derating to 58 A at 70 °C — so it holds full rating in most ventilated enclosures but needs a bump-up if the panel ambient hits 70 °C. The interrupting capacity is 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, which covers high-fault industrial mains and most transformer-secondaries without cascading upstream. Rated insulation voltage is 800 V, so it's comfortable on 480/277 V and 600 V systems. The 3-pole design with an undervoltage release (UVR) means it drops the load on loss of control voltage — typical for safety circuits or coordinated shutdown sequences. The auxiliary switch configuration — 2 auxiliary switches plus 1 trip alarm switch HQ — gives remote status feedback for both the breaker position and fault trip, which saves adding external relays for a PLC or SCADA input. The UVR is factory-installed, so no field retrofit required. Power loss is 19.8 W maximum, which matters for thermal management inside a sealed enclosure.
Panel integration
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a 3-pole MCCB footprint that fits standard Siemens SENTRON mounting plates and busbar systems. The depth is shallow enough for 200 mm deep enclosures with clearance for rear-connected busbars. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.