It mounts via screw and snap-on onto 35 mm DIN rail per DIN EN 50022, and its screw-type terminals accept solid conductors up to 4 mm² and stranded up to 25 mm² — common for panel wiring in the 18.5 kW range. At 500 V it delivers 22 kW, and at 690 V it still manages 11.4 kW — useful for 690 V line applications common in mining or marine panels. The AC-4 rating of 35 A at 400 V covers plugging and inching duty cycles.
The 40 °C derating point for the main circuit is 16 mm² minimum conductor size — plan your wire gauge if the panel runs hot.