MCCB for line protection with integrated undervoltage release
Breaking capacity reaches 187 kA at 240 V, 121 kA at 415 V, and 75.6 kA at 440 V, giving substantial fault-clearing headroom for high-available-fault-current installations like industrial switchboards or transformer secondaries. At 690 V it still interrupts 17 kA, covering most 690 V industrial distribution systems.
Thermal derating and ambient operating range
Above that, derating applies: 194 A at 55 °C, 188 A at 60 °C, 182 A at 65 °C, and 176 A at 70 °C. If the panel internal temperature runs hot — say, near a transformer or in a poorly ventilated enclosure — use the 55 °C or 60 °C column for sizing.
The 3-pole width fits standard MCCB panel cutouts or DIN-rail adapter plates.