What this 160 A MCCB delivers
Its interrupting capacity reaches 220 kA at 240 V, 154 kA at 415 V, and 75.6 kA at 440 V — figures that cover most industrial service-entrance and feeder applications where high fault current is a given. The TM220 release combines a thermal bimetal for overload protection and a magnetic coil for short-circuit response. This is a fixed-trip design — no interchangeable rating plugs — so the 160 A frame is the protection setting.
Above that, it derates to 156 A at 55 °C, 151 A at 60 °C, 147 A at 65 °C, and 142 A at 70 °C (–). In a sealed, uncooled enclosure, factor in the 33 W maximum power loss when calculating internal temperature rise. The IP40 front protection means it is suited for indoor panel mounting where tools or fingers cannot contact live parts through the front face. The 4-pole width is standard for a 160 A frame; verify the DIN-rail or mounting-plate spacing against your existing panel layout. The breaker does not include a trip indicator — visual confirmation of the tripped state comes from the handle position alone.