It's a DIN-rail mounted unit, 18 mm wide, designed to sit fixed on the left of a current transformer in a residential or small commercial panel. The control circuit voltage range is 48...127 V AC at 50/60 Hz, with a hold-in power consumption of 3 VA. Rated insulation voltage is 440 V, with an impulse withstand voltage of 4 kV (overvoltage category III). The part complies with IEC/EN 61095, the standard for electromechanical contactors and motor-starters — which covers the auxiliary's switching duty in control circuits.
Integration notes
Terminal connections are tunnel-type: accepts 2 x 2.5 mm² flexible or 2 x 1.5 mm² rigid per circuit, with yellow clip markers for identification. The 60 mm depth fits standard shallow enclosures, but verify clearance for the control wiring exit on the left side where it mounts adjacent to the CT.