What this 4-pole MCCB does on the line
The 3VA1220-5EF42-0BA0: Rated a full 200 A continuous at 40 °C ambient, and it holds that same 200 A all the way up to 50 °C — no derating until you push past that. At 55 °C it still carries 194 A; at 70 °C it's 176 A. That thermal curve matters when this breaker lives in a crowded panel next to a hot drive or a transformer. The interrupting ratings are serious: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That 187 kA at 240 V tells you this thing will clear a dead-short on a big transformer secondary without the upstream fuse even noticing. It ships with a TM240 thermal-magnetic trip unit — that's the overcurrent release. The 'TM' means fixed thermal and magnetic settings, no electronic adjustment. For a line-protection role on a fixed-load feeder, that's the right call: set it and forget it.
Built-in undervoltage release and panel fit
This breaker includes an undervoltage release (UVR) as part of the basic switch assembly. That means if your control voltage drops below the dropout threshold, the breaker trips — no separate shunt-trip module to wire in. Handy for a safety circuit or a pump panel that needs to drop out on a brownout. Dimensions are 158 mm high, 140 mm wide, 70 mm deep — a standard 4-pole MCCB footprint. It'll drop into a SENTRON panel or a generic enclosure without re-drilling the mounting plate. Rated insulation voltage is 800 V, so it's comfortable on 480 V or 600 V systems with headroom. Operating temperature range is -25 °C to 70 °C, storage from -40 °C to 80 °C. The 44.5 W maximum power loss at full load means it'll warm the panel a bit — account for that in your thermal budget if you're stacking several breakers in a row.