Panel fit and key ratings
Its interrupting capacity reaches 75.6 kA at 240 V AC and 52.5 kA at 415 V AC — figures that govern selectivity in a distribution board and determine whether it can clear a fault without upstream devices tripping. A mechanical trip indicator is present on the front. Rated insulation voltage is 800 V; a derating curve applies above 50 °C — the 32 A rating holds up to 50 °C, then drops to 28.8 A at 70 °C.
Integration note
The undervoltage release (UVR) requires a control voltage to keep the breaker closed — if the control supply drops, the breaker opens, which is a deliberate safety feature for undervoltage protection on motor feeders.