Its interrupting capacity hits 220 kA at 240 V AC, dropping to 154 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V — numbers that tell you it handles high-fault utility feeds or transformer secondaries where available fault current is substantial.
The 160 A continuous rating holds flat from 40 °C through 50 °C (–), then gently tapers to 150 A at 70 °C. That's a thermal curve you can trust in a warm panel — no surprise derating at 45 °C. The 3-pole frame suits three-phase feeders, and the line-protection design means the trip curve is optimized for cable and busbar protection, not motor start-up. An undervoltage release (UVR) is built in, so the breaker drops out on loss of control voltage — standard for safety circuits that need to prevent automatic restart after a dip.