The TM220 designation means the thermal trip is fixed at 80 A and the magnetic short-circuit pickup is adjustable — typically 5–10x In, so roughly 400–800 A instantaneous. That 80 A rating holds flat from 40 °C through 50 °C, then derates gradually to 74 A at 70 °C, giving you a usable thermal budget in warm enclosures. Breaking capacity is the headline number here: 187 kA at 240 V AC, 121 kA at 415 V AC, 76 kA at 440 V AC, and 17 kA at 500 V AC. DC rated voltage maxes at 500 V. For DC applications, consult the 3VA manual for switching capacity derating — the evidence flags that the DC values are not listed here.
Integration into a panel
That 3-inch (76.2 mm) width is standard for a 3-pole MCCB this class — fits a 3-module DIN-rail footprint or a bolted bus connection. This is a plain line-protection breaker — the TM220 release handles overload and short-circuit only. If you need shunt trip, UVR, or auxiliary contacts, those are external accessories (not included here).