What the ratings mean for your panel
The Siemens SENTRON 3VA1063-3ED32-0AF0 is a 3-pole molded case circuit breaker (MCCB) rated for 63 A continuous current at 40 °C through 50 °C — no derating needed in a typical 40 °C panel ambient. Above 50 °C it steps down linearly: 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. That thermal curve means if your enclosure runs hot, you lose about 6 A by the time you hit 70 °C — factor that into your load budget. Interrupting capacity is what decides whether this breaker clears a fault without welding its contacts or venting plasma. At 240 V it breaks 75.6 kA; at 415 V, 52.5 kA; at 440 V, 32 kA; at 690 V, 7.5 kA. Those are the SCCR values that govern selectivity with downstream devices — if your available fault current at the panel exceeds the rating at your system voltage, you need a larger frame or upstream current-limiting fuse. The overcurrent release is a TM210 — thermal-magnetic, fixed at 10× Iu for short-circuit pickup. No electronic adjustment, no communication module, no ground-fault or undervoltage release fitted on this variant. It is a straight line-protection breaker: cable and busbar protection in a distribution board, not a motor-protective device requiring adjustable overload curves.
Panel fit and auxiliary wiring
Mounts on a DIN rail or direct-panel via the SENTRON 3VA common footprint. Dimensions: 130 mm height, 76.2 mm width, 70 mm depth. The width is a standard 3-pole MCCB pitch — it occupies three 25.4 mm module spaces on the rail. IP40 on the front face means it is protected against solid objects over 1 mm but not sealed against moisture; keep it inside a rated enclosure in washdown areas. Comes with one auxiliary switch and one trip-alarm switch (HQ type). The auxiliary tracks the breaker position; the alarm signals only after a fault trip, not manual opening. That dual-contact block is wired separately from the main power circuit — typically used to annunciate a tripped condition to a PLC or status lamp. Latching endurance is rated at 15,000 operations — adequate for distribution switching, not for daily motor-starting duty.
Lifecycle and sourcing posture
Sourced through independent distribution channels. Availability and current pricing confirmed at quote time against an RFQ. If you are filling a BOM line or replacing a failed unit in an existing SENTRON panel, this order code is a direct drop-in — same footprint, same aux wiring scheme as other 3VA 3-pole frames.