Breaking capacity is 121 kA at 240 V AC and 75.6 kA at 415 V AC, which puts it in the high-interrupting range for industrial mains feeding a switchboard or a motor control center. The 3-pole construction and 800 V rated insulation voltage mean it handles 3-phase supplies up to 690 V line-to-line — the 11.9 kA at 690 V confirms it can clear a fault on a 690 V mining or marine distribution bus.
Built-in auxiliary and undervoltage release
The auxiliary switches report breaker position (open/closed/tripped) back to a PLC or status lamp without needing a separate limit switch on the operating mechanism.