It carries a fixed 160 A rating across all four poles — no adjustment range, so what you spec is what lands.
Breaking capacity — what it means on a real fault
At 240 V this breaker interrupts up to 440 kA — that's a massive fault current, typical for a main or large feeder position close to a transformer. At 415 V and 440 V it still holds 242 kA, and at 500 V it's 154 kA.
Thermal derating — this is the real-world rating
At 55 °C it drops to 313 A, at 60 °C to 306 A, at 65 °C to 299 A, and at 70 °C to 292 A. The maximum power loss is 80.1 W, which matters for enclosure heat load calculations in a sealed cabinet.
Integration — panel fit and wiring
The breaker measures 184 mm wide, 248 mm tall, and 110 mm deep. Front protection is IP40, so it's splash-safe from the front but not sealed against dust ingress through vents. No undervoltage release, no trip indicator, no communication module — this is a plain-vanilla thermal-magnetic breaker for straightforward line protection.