MCCB for line protection — 40 A, 3-pole, ETU350 trip unit
Its interrupting capacity reaches 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 3.7 kA at 690 V — figures that place it in the high-breaking-capacity class, suited for installations with high prospective fault current.
Panel fit and operating conditions
Rated insulation voltage is 800 V, and the breaker operates from -25 °C to 70 °C ambient, with no derating of the 40 A continuous current across the full temperature range up to 70 °C.