It is screw-fixed to the mounting surface, not DIN-rail snapped, so panel layout needs to account for that — drill pattern uses an 11 mm hole, single fixing point. Rated switching frequency varies by duty: 500 operations per hour at AC-1 (resistive), 420 ops/h at AC-3 and AC-3e (standard motor starting), 170 ops/h at AC-2 (slip-ring motors), and 130 ops/h at AC-4 (plugging/reversing). That AC-3e rating matches the AC-3 figure, so it's not a derated variant — expect the same mechanical endurance on standard motor starts. The coil terminal uses screw-type terminals, and an auxiliary switch is built in. Conductor cross-section on the main power path goes up to 240 mm² stranded — sized for the S12 frame's full current rating.
Dimensions: 214 mm high, 160 mm wide, 225 mm deep. Clearances required: 10 mm above and below, 10 mm to the side, 20 mm forward. Main power wiring accepts stranded conductors 70 to 240 mm². Auxiliary/control wiring uses solid or stranded: 2x (0.5 to 1.5 mm²), 2x (0.75 to 2.5 mm²), or max 2x (0.75 to 4 mm²) per terminal. That's enough for standard 1.5 mm² control loops and up to 4 mm² for interposing relays.