The 3VA1220-5GF42-0CC0: Rated insulation voltage is 800 V, and the interrupting capacity climbs to 187 kA at 240 V, dropping to 121 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 17 kA at 690 V. That's a healthy margin for most industrial distribution panels — you're not bumping up against the ceiling on a 480 V bus. This breaker is set up for line protection (cable/feeder duty), not motor protection — no ground-fault monitoring, no communication module, no voltage trip. It's a straight-ahead thermal-magnetic MCCB with an undervoltage release (UVR) built in, plus two HQ auxiliary switches for status feedback back to the PLC or panel lamps.
Thermal derating and panel fit
At 40 °C through 50 °C it holds the full 200 A. At 55 °C it's 194 A, 60 °C gives 188 A, 65 °C gives 182 A, and at 70 °C it's 176 A. That's a clean, linear derating curve — no surprises when the panel gets hot. Max power loss is 44.5 W, so factor that into your enclosure thermal budget. Dimensions are 158 mm high, 140 mm wide, 70 mm deep — that's roughly 6.22 x 5.51 x 2.76 inches. It's a 4-pole frame, so it takes up the expected panel width for a 200 A MCCB. The undervoltage release and auxiliary switches are factory-installed, not field-added kits, so what you see on the nameplate is what's wired in.
Sourcing and lifecycle
Lifecycle status is current — no phase-out notice, no last-time-buy window. This is a standard SENTRON catalog part that's been in steady production. If you're freezing a BOM or stocking a spare, this one isn't going to vanish mid-project.