SENTRON 3VA1063-2ED42-0AE0 — 63 A MCCB for Panel Distribution
The Siemens 3VA1063-2ED42-0AE0 is a SENTRON molded case circuit breaker (MCCB) rated for 63 A continuous at 40 °C, with a 4-pole configuration and a TM210 thermal-magnetic release. It's a line-protection device — meaning it's built for feeder and distribution circuits, not motor-starting duty. The interrupting ratings climb to 52.5 kA at 240 V and still hold at 32 kA on a 415 V system, so it handles high-fault service-entrance panels without cascading upstream. The TM210 release is a fixed thermal-magnetic type — no interchangeable trip units, no electronic adjustments. That keeps the BOM simple and the part field-replaceable without calibration gear. If the line needs adjustable long-time or short-time pickup, you'd step up to the electronic-release variants in the 3VA family. For a straightforward 63 A feeder, this is the one that's on the van and ready to swap.
Interrupting Capacity and Thermal Derating
Interrupting capacity drops as system voltage rises: 52.5 kA at 240 V, 32 kA at 415 V, 13.6 kA at 440 V, and 7.5 kA at 690 V. That 690 V figure is worth noting — most 4-pole MCCBs in this frame size don't carry a 690 V rating at all. It means the breaker can serve 690 V delta or 400/690 V star systems, common in European industrial plants and mining. Thermal performance is stable up to 50 °C — the breaker holds 63 A flat. At 55 °C it derates to 60.48 A, and at 70 °C it's 56.7 A. That's a gentle slope; you don't lose a full size step until well above 60 °C. The TM210 release's thermal element tracks ambient, so in a hot panel you size the load at the derated figure, not the nameplate.
Physical Fit and Panel Integration
Footprint is 101.6 mm wide by 130 mm tall by 70 mm deep. That width is a standard 4-pole MCCB pitch — it fits the same DIN-rail or screw-mount pattern as other 160 A frame SENTRON breakers. The 70 mm depth is shallow enough for a 200 mm deep enclosure with room for wiring gutters. IP40 on the front means it's fine in a clean indoor panel; keep it out of washdown zones. Four auxiliary switches (HQ type) come integrated, so you get position feedback without an add-on module. No undervoltage release, no shunt trip, no ground-fault monitoring — this is a bare feeder breaker with aux contacts. If the spec calls for remote trip or GF protection, you'd order a variant with those options or add external modules.