What it is and what it does
The SENTRON 3VA1463-6EE32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 630 A continuous current at 40 °C, with a TM220 thermal-magnetic overcurrent release. It is designed for line protection — the primary role is protecting cables and busbars from overloads and short circuits in distribution panels. Breaking capacity at 415 V is 154 kA, which means it can safely interrupt fault currents up to that level without upstream devices needing to clear the fault first — important for selectivity coordination in high-fault installations. Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole MCCB footprint that fits common panel layouts and busbar systems.
Ratings and what they mean for the panel
Continuous current holds at 630 A from 40 °C through 50 °C ambient, then derates linearly to 583 A at 70 °C. That derating curve is the one to watch when the breaker sits in a hot enclosure — at 55 °C you lose 12 A, at 70 °C you lose 47 A. The TM220 release handles the overload curve; the magnetic element trips instantaneously on short-circuit. Breaking capacity varies by voltage: 220 kA at 240 V, 154 kA at 415 V and 440 V, 121 kA at 500 V, and 17 kA at 690 V. The 690 V figure is the one that governs in 690 V industrial networks — 17 kA is adequate for most secondary distribution but check your available fault current at that voltage level. Rated insulation voltage is 800 V, so the breaker is rated for use in 690 V systems with margin. Operating temperature range is -25 °C to 70 °C; storage range is -40 °C to 80 °C.
Lifecycle and sourcing reality
Power loss at maximum rating is 192.9 W — factor that into enclosure thermal calculations if the panel is tightly packed.