The interrupting ratings climb steeply with voltage: 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 4.5 kA at 690 V.
Thermal derating — what the continuous current actually means at panel temperature
The 250 A continuous rating is only valid up to 50 °C ambient. Above that, the breaker derates linearly: 238 A at 55 °C, 225 A at 60 °C, 213 A at 65 °C, and 200 A at 70 °C.
Ground-fault monitoring and communication
This variant includes ground-fault monitoring using summation current formation on the L + N conductor — it measures the vector sum of phase and neutral currents to detect leakage to earth. That makes it suitable for TN or TT systems where you need GF protection integrated into the breaker rather than a separate relay. It also has a communication function, so it can report status, trip events, and measured values over a bus system — typical for a digital switchboard or an energy-management setup where the breaker talks to a PLC or BMS.
Dimensions are 181 mm height, 140 mm width, 86 mm depth. Maximum power loss is 48 W at rated current — that heat has to be ventilated or factored into the enclosure thermal calculation.