MCCB with motor protection and high breaking capacity
It is equipped with an ETU350M electronic overcurrent release and an integrated shunt trip (STL) auxiliary release.
Breaking capacity is rated per voltage: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 52.5 kA at 690 V.
Rated continuous current holds at 250 A from 40 °C through 50 °C ambient, then derates to 240 A at 55 °C, 235 A at 60 °C, 230 A at 65 °C, and 225 A at 70 °C. Minimum operating temperature is -25 °C; maximum is 70 °C. Maximum power loss is 37.5 W.
Integration and mounting dimensions
Panel cutout dimensions: width 138 mm, height 248 mm, depth 110 mm. The 3-pole form factor fits standard Siemens SENTRON mounting bases. No auxiliary contacts are fitted as standard; the auxiliary contact version is listed as without.