The 3RT7017-1AF02: Mounts via screw or snap-on onto 35 mm DIN rail per DIN EN 50022. The mounting position allows ±180° rotation on a vertical surface and ±22.5° tilt forward/backward, giving flexibility in tight enclosures. Side-by-side mounting is supported, so you can gang multiple contactors without spacing. The IP20 rating on the front and terminals means it's protected against solid objects larger than 12 mm (fingers, tools) but not moisture — standard for dry indoor control panels. Pollution degree 3 confirms it's suited for industrial environments with conductive pollution.
Key ratings and what they mean
The AC-3 rated operating voltage maximum of 690 V defines the highest line voltage for switching squirrel-cage motors. At 690 V, the contactor handles the inductive motor load without excessive contact wear. For lower voltages (400 V, 230 V), the switching capacity improves — the part carries 6 A at 230 V, 3 A at 400 V, and 1 A at 690 V. Coil power draw is modest: 0.8 W closing, 0.27 W holding at DC. That holding power stays constant regardless of line frequency (0.27 at both 50 Hz and 60 Hz), so the thermal load on the control transformer is predictable. The coil accepts 110 V AC at both 50 and 60 Hz. Mechanical endurance is supported by switching rates up to 750 operations per hour at AC-3 and 250 at AC-4. The auxiliary contacts are rated for PLC-level signals (17 V, 5 mA), so you can wire them directly to a digital input without concern for contact wetting issues.
Integration and protection
The contactor accepts auxiliary switch extensions (product extension auxiliary switch: yes), so you can add feedback contacts for status monitoring without changing the base unit. Screw-type terminals accept 2x (0.5 to 1.5 mm²) solid or stranded, or 2x (0.75 to 2.5 mm²) finely stranded with ferrules. For short-circuit protection, use gL/gG NH 3NA fuses: 20 A for type 2 coordination (no damage to the contactor), 35 A for type 1 (contactor may need replacement after fault). The rated insulation voltage is 690 V, with surge voltage resistance of 6 kV. Operating temperature range is -10 to +55 °C, storage from -25 to +70 °C. Shock resistance is 9.8g at 5 ms and 5.9g at 10 ms — adequate for most industrial panels but not for high-vibration applications like near large presses.