Siemens 3SE03-SA Limit Switch

Siemens 3SE03-SA is a heavy‑duty plug‑in limit switch module from the 3SE03 North American family, designed for reliable position sensing in industrial equipment. It features a 5‑pin receptacle SPDT connection and an EN50041 body with two mounting holes, supporting a 1NO/1NC contact configuration. The module is rated for up to 10 A at 600 VAC (1 A at 300 VDC) and is built to enclosure classes including NEMA 1/3/3S/4/4X/6/6P/11/12/13 and IP66, with an operating temperature range of 14 to 250°F (−10 to 121°C). It is intended for use with Siemens 3SE03 modular plug‑in limit switch heads (such as plain side plunger or roller plunger variants) to enable precise end‑of‑travel and interlock switching in machines and conveyors.