It carries a continuous current rating of 100 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel sizing in warm enclosures. Three-pole construction handles three-phase circuits. The interrupting ratings climb steeply at lower voltages: 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 3.7 kA at 690 V. That 242 kA figure at 240 V means it can clear a massive fault on a 240 V secondary without the breaker itself failing — important for high-fault-capacity transformer feeds. A shunt trip release (STL) is built in for remote tripping.
The breaker measures 105 mm wide, 181 mm high, and 86 mm deep.