What this 200 A MCCB does in a panel
It's designed for starter protection — meaning it handles motor branch circuits where you need coordinated overload and short-circuit protection in one package. The interrupting capacity drops as line voltage climbs: 220 kA at 240 V, 154 kA at 415 V, 75.6 kA at 440 V, 30 kA at 500 V, and 4.5 kA at 690 V.
Above that it starts stepping down: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C.
Auxiliary wiring and undervoltage release
The UVR drops the breaker if control voltage falls — common on safety circuits or emergency-stop chains where you need the load to drop on power loss. The auxiliary contacts let a PLC or status lamp read the breaker position without climbing into the main lugs.