It gives you 3 normally-open and 1 normally-closed contact set (3 NO + 1 NC), wired to screw terminals. The contacts are physically coded so they only fit with 3RH2140 and 3RH2440 contactor relays per EN 50011 — no guessing if it'll line up on the wrong base. Rated for a maximum of 10 A, this switch handles control-circuit loads across a range of voltages. At 24 V it's rated 6 A, at 110 V it's 1 A, and at 400 V it's 3 A. Snap-on mounting onto the contactor relay keeps installation quick — no tools needed beyond a screwdriver for the screw terminals.
The AC-15 rating at 690 V is 1 A. AC-15 covers electromagnetic loads like contactor coils, so this switch can reliably break that inductive kick without welding contacts. Mechanical service life is 10 million switching cycles typical. That's a lot of operations — for a machine that cycles once every 10 seconds, that's over three years of continuous duty before the mechanism wears out. That's important for PLC-level signals where a dry circuit might not burn through oxide — this switch handles low-energy logic reliably.
Integration notes
The screw terminals accept 2x (0.5... 1.5 mm²) or 2x (0.75... 2.5 mm²) with core end processing, or AWG 20-16 and 18-14. Strip length and ferrule sizing follow standard practice for the terminal class. Dimensions are 36 mm wide, 37.5 mm high, 43.7 mm deep. Fine for most indoor panels; if the cabinet sees direct sun or a heat source, check the ambient stays under 60 °C.