The Siemens SENTRON 3VA2063-7HL36-0AA0 is a 3-pole molded case circuit breaker rated for 63 A continuous current, built around the ETU320 electronic trip unit. It's designed for line protection in distribution panels and motor control centers, with an insulation voltage rating of 800 V. The interrupting capacity hits 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3 kA at 690 V — so it handles high-fault utility feeds and transformer secondaries without cascading upstream.
What the ratings mean for fit
The 63 A continuous rating holds flat across the full ambient range from 40 °C to 70 °C — no derating curve to calculate for warm panel environments. The ETU320 electronic trip gives adjustable overload and short-circuit protection, which matters when coordinating with downstream feeders or motor starters. The 800 V insulation rating means it's suitable for 480 V and 600 V class systems with headroom. Panel cutout dimensions: 105 mm wide, 181 mm tall, 86 mm deep — verify the mounting footprint against your existing switchboard or enclosure layout.
Integration notes
Mounts in a standard MCCB cutout on a panel or switchboard. Front IP40 protection keeps dust out of the enclosure face. No undervoltage release, no ground-fault monitoring version, no communication module on this variant — it's a straight line-protection breaker. If you need those functions, this isn't the build; if you just need a reliable 63 A main or feeder with high interrupt capacity, it's a clean fit.