The Siemens 3VA1063-3ED32-0AE0 is a 3-pole SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous current with a TM210 thermal-magnetic release. It's configured for line protection — the standard role for a feeder or main breaker in a distribution panel — and carries four auxiliary switches (HQ type) for remote status indication. The interrupting ratings climb to 75.6 kA at 240 V and 52.5 kA at 415 V, which covers most industrial service-entrance and sub-feed applications where fault current runs high.
What the ratings mean for fit
The 63 A rating holds flat from 40 °C to 50 °C — no derating needed in a typical warm panel. Above that it steps down: 60.48 A at 55 °C, 59.22 A at 60 °C, 57.96 A at 65 °C, and 56.7 A at 70 °C. If your enclosure sits near a heat source or in a non-conditioned space, check the ambient at the breaker's location, not the room thermostat. The TM210 release is a fixed thermal-magnetic type — no interchangeable trip unit, so what you order is what coordinates. The 800 V rated insulation voltage (Ui) means it's comfortable on 480 V and 600 V class systems with margin. Interrupting capacity varies sharply with line voltage: 75.6 kA at 240 V, 52.5 kA at 415 V, 32 kA at 440 V, and 7.5 kA at 690 V. On a 480 V wye service (277/480) the 440 V figure is the closest published point — 32 kA — which is adequate for most North American industrial panels. The 690 V number is low; if your system runs 600 V or 690 V, verify the available fault current stays under 7.5 kA or step up to a higher-rated frame.
Panel integration and deployment
The 3VA1063-3ED32-0AE0 measures 76.2 mm wide, 130 mm tall, and 70 mm deep — a standard MCCB footprint that fits most DIN-rail or panel-mount enclosures without re-drilling. The IP40 front protection means it's suitable for a dry indoor panel; keep it out of washdown zones or add a cover. The 15 000 mechanical endurance cycles is typical for a distribution breaker — fine for infrequent switching, not rated for daily motor-start duty. Operating temperature range is -25 °C to 70 °C, so it handles unheated warehouse or rooftop enclosures as long as condensation is managed.