Bernstein 603-3135-012 Limit Switch SN2-U1-AH

Bernstein 603-3135-012 SN2-U1-AH is a metal-bodied limit switch from the SN2 family, engineered for rugged, through-wired position sensing in industrial automation. The unit features a die-cast aluminium enclosure with a sheet aluminium cover and an IP65 protection rating to VDE 0470 T1, making it suitable for dirty or wet production environments. It provides three cable entries (M20 x 1.5) and a spacious DIN EN 50013–compliant terminal area to simplify wiring and branching in complex control circuits. The SN2-U1 AH actuator is a lever option whose position can be adjusted in 90° increments, with graduated adjustment and a selection of actuators to fit a wide range of applications. The switch uses a galvanically isolated changeover contact (Zb) in SPDT configuration, commonly offered as 1 NC/1 NO (with other contact configurations available in the SN2 family). Electrical data for related SN2-U1Z AHS variants show a rated insulation voltage up to 400 V AC and a current rating around 10 A, with AC-15 operation at 240 V / 3 A; exact ratings depend on the specific sub-model, so the 603-3135-012 variant should be consulted in its datasheet for precise figures. The SN2 line is designed to accommodate slow-action or snap-action contacts and can be configured with different contact-count options (1 NC/1 NO or 2 NC), enabling it to suit end-of-travel sensing, machine safety interlocks, and other position-detection roles in conveyors, tooling, and other automated equipment.