The TM220 thermal-magnetic release provides adjustable overload (Ir max. 250 A) and short-circuit (Ii max. 2,500 A) protection, making it a direct fit for main feeder or large branch-circuit protection in 400 V class distribution panels.
This MCCB delivers 121 kA at 240 V, 76 kA at 415 V, 53 kA at 440 V, and 17 kA at 500 V.
Rated continuous current holds at 250 A from 40 °C through 50 °C ambient, then derates linearly to 223 A at 70 °C. The 70 mm depth and 138 mm width fit standard SENTRON mounting footprints;