The Siemens 3VA2063-6HL32-0AC0 is a SENTRON molded case circuit breaker (MCCB) built for line protection in distribution panels. It's a 3-pole unit rated at 63 A continuous current across its full ambient range from 40 °C to 70 °C — no derating needed up to that top end, which matters when the breaker sits in a crowded enclosure where heat builds. The interrupting capacity hits 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V, so it handles high-fault scenarios common in industrial mains or transformer secondary feeds.
Dimensions are 105 mm wide, 181 mm tall, and 86 mm deep — fits standard panel-mount cutouts for a 3-pole MCCB. Power loss runs 5.4 W maximum, so heat dissipation inside the enclosure is manageable even with several breakers ganged together. The breaker ships with 2 auxiliary switches (HQ type) built in, which saves adding external aux blocks for status feedback to a PLC or indicator lamp.