MCCB for line protection — 63 A, 1-pole, TM210 release
The Siemens SENTRON 3VA1163-4ED12-0AA0 is a 1-pole molded case circuit breaker (MCCB) rated for line protection duty. Its continuous current Iu is 63 A, with a TM210 thermal-magnetic overcurrent release configured for LI protection — meaning it provides long-time delay (thermal) and instantaneous (magnetic) trip functions, with the magnetic pickup fixed at 630 A (10x Iu). This single-pole MCCB occupies a 25.4 mm (1 in) width on the DIN rail, with a depth of 70 mm and height of 130 mm — a compact footprint that fits standard distribution panels. Front IP40 protection handles typical enclosure environments.
Breaking capacity and thermal derating — what the ratings mean for panel coordination
The interrupting capacity tells you where this breaker can sit in a fault-current study. At 240 V AC, it interrupts 75.6 kA — that places it upstream in high-fault locations like a main distribution board. At 415 V AC the rating drops to 9 kA, which is still adequate for most downstream sub-distribution panels where the available fault current is lower. The 1-pole DC rating is 125 V, so it also works for DC branch circuits within that voltage ceiling. Thermal derating is documented across the operating range: 63 A from 45 °C up to 50 °C, then stepping down to 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 at 60 °C, this breaker can only carry 61 A continuously — factor that into your load calculation. The operating temperature range is -25 °C to +70 °C, with storage from -40 °C to +80 °C. Maximum power loss is 5.77 W — negligible for thermal budgeting in a populated panel, but worth noting if you're packing multiple breakers in a sealed enclosure.
Lifecycle and sourcing — active production, quoted to order
The rated insulation voltage is 500 V, and the design reference code per IEC 81346-2 is Q (switching device). No communication function, no motor drive option, and no auxiliary contacts are included on this variant — it is a straight line-protection MCCB.
Panel integration — DIN-rail mounting, single-pole footprint
Mounts on standard DIN rail. The 25.4 mm width means one pole per 1 inch of rail space — a 3-pole installation takes 76.2 mm (3 in). Depth of 70 mm leaves clearance for wiring and busbar connections behind the breaker. Front IP40 is sufficient for enclosed panel use; no washdown rating needed here.