It carries a conventional free air thermal current of 1250 A at 40 °C, with an operational current of 1000 A at 440 V in AC-23B duty — the heavy motor-switching category per IEC 60947-3. Rated operational power reaches 560 kW at 400 V and 475 kW at 690 V. Breaking capacity is 8000 A at 400 V (AC-23B), and making capacity hits 10000 A at 400 V AC-23B — meaning it can close onto a fault of that magnitude without welding contacts. Short-circuit withstand is 90 kA, so it coordinates with upstream protective devices in a high-fault panel.
Plate-mounted, with an external left-side operating handle. The DIN 4 fuse size means it accepts standard DIN-style fuse links. Power connections accept bars up to 80 mm² or ring terminals on up to 4 cables of 185 mm² each — sized for the 1250 A feed. Tightening torque on the power circuit is 44 N·m, so a torque wrench is part of the install kit. The body and fuse cover are rated for 960 °C and 850 °C glow-wire resistance respectively, per IEC 60695-2-1.
This part is classified as obsolete by the manufacturer.