SENTRON 3VA1163-3ED16-0AA0 — 1-pole 63 A MCCB, line protection
The Siemens SENTRON 3VA1163-3ED16-0AA0 is a 1-pole molded case circuit breaker (MCCB) rated for 63 A continuous current (Iu) with a TM210 thermal-magnetic release. It's built for line protection duty — think feeder circuits, distribution subpanels, or branch protection where you need a compact single-pole footprint. The interrupting capacity hits 53 kA at 240 V AC and still holds 7.5 kA at 415 V, so it handles high-fault utility feeds or transformer secondaries without cascading upstream. The TM210 release gives you fixed thermal pickup at 63 A (Ir min/max both 63 A) and fixed magnetic pickup at 630 A (Ii), so there's no adjustment range — set-and-forget for standard distribution. Rated insulation voltage is 500 V, and the front face carries IP40 protection, fine for enclosed panel mounting.
Thermal derating and real-world current capacity
This breaker holds its full 63 A rating from 40 °C through 50 °C. Above that, it starts to taper: 62 A at 55 °C, 61 A at 60 °C, 60 A at 65 °C, and 58 A at 70 °C. If your panel ambient runs hot — say a crowded enclosure near a motor drive — factor that derating into your load calculation. The maximum power loss is 5.8 W, which is modest for a 63 A MCCB and won't drive much internal heat rise on its own.
Physical fit and panel integration
The 3VA1163-3ED16-0AA0 measures 25.4 mm wide (1 inch) by 130 mm tall (5.1 inches) by 70 mm deep (2.8 inches). That single-pole width matches the standard SENTRON 3VA family footprint, so it clips onto the same DIN rail and aligns with the busbar system. If you're swapping in a panel originally built around a 3VA1020-3ED36-0AA0 or similar 1-pole 3VA, the dimensions and mounting are identical — no rewiring or re-drilling needed.
Environmental limits and storage
Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C. The storage spec governs handling and warehousing — the breaker can sit in a cold warehouse or hot container without damage, but the operating limits are what matter once it's installed and carrying load.