Schmersal IFL-20-333-11YPG Electrical Safety Switch

Schmersal IFL-20-333-11YPG is a compact 20 mm switching-distance safety switch with a block-design housing (112 × 40 × 40 mm) intended for door interlock and safeguarding in machinery. It provides one normally-open (NO) contact and an opener (NC) antivalent output, configured for DC operation with a rated supply of 10–36 V DC and a maximum operating current Ie of up to 200 mA; no-load current is typically around 15–16 mA at 24 V, with a voltage drop Ud of about 1.6 V at 200 mA (rising to ~2.5 V in some configurations). The device carries an IP65 protection rating (suffix Y) and supports multiple termination options, including LiYY 4 × 0.14 mm² cables up to 2 m, or M8/M12 connectors, enabling flexible installation. A switching frequency up to approximately 2,000 Hz and an operating ambient temperature up to +70 °C are specified, and you can reposition the actuator direction in five orientations and mark the selected orientation with a sticker for quick identification. This model corresponds to Schmersal’s IFL 20 series (Schmersal catalog number 101173918) and is designed for safety-interlock circuits in access-door applications in industrial environments.