What this MCCB does on the line
Its 3-pole design handles line protection in distribution panels, with a maximum breaking capacity of 242 kA at 240 V AC and 187 kA at 415 V AC, so it clears high-fault currents without cascading upstream breakers.
The 3-pole form factor matches standard MCCB cutouts; verify the 86 mm depth allows clearance for the shunt trip wiring and auxiliary switch cable exit. The HQ auxiliary switches provide one N/O and one N/C contact each — confirm the PLC input mapping before commissioning.
Breaking capacity by voltage level
Rated breaking capacity varies with system voltage: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3 kA at 690 V. The steep drop at 690 V means this breaker is best suited for 240–500 V distribution; for 690 V applications, verify the available fault current stays under 3 kA.