The Siemens SENTRON 3VA2063-5HL32-0DE0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current (Iu) and built for line protection duty — meaning it sits upstream protecting a feeder or a large load, not a motor branch circuit with its own overload relay. The interrupting ratings tell you where it can go: 187 kA at 240 V, 121 kA at 415 V and at 440 V, 76 kA at 500 V, and 3 kA at 690 V. The 63 A rating holds flat across the full ambient range from 40 °C to 70 °C, so no derating headache in a warm enclosure.
Built-in undervoltage release and aux switching
It also carries four auxiliary switches in the HQ configuration (high-auxiliary switching capacity), so you get status feedback for each pole without adding external contact blocks. The auxiliary release order code is 3VA9608-0BB25 if you need a spare or a replacement module. No communication function on this variant — it's a straight electromechanical breaker, no bus coupler inside.
Panel fit and physical integration
Dimensions are 105 mm wide, 181 mm tall, 86 mm deep — a standard SENTRON 3VA2 frame footprint. Rated insulation voltage Ui is 800 V, so it's comfortable on 480/277 V and 600 V systems. Storage range is -40 °C to 80 °C; operating range is -25 °C to 70 °C.