Siemens 3SE03-AS3 Limit Switch Push Roller Actuator

Siemens 3SE03-AS3 is a rugged roller-side plunger limit switch in the 3SE03 North American family, engineered for end-of-travel sensing in automated equipment, and it provides a momentary 1NO+1NC contact set that closes or opens as the roller engages a target. The roller plunger mechanism spins as it contacts moving parts before triggering a snap-action switch, delivering a mechanical life of 10,000,000 cycles and a wide operating temperature range from -10 to 94 °C. Electrical ratings include up to 600 VAC / 300 VDC with a 10/1 A rating, and mounting options cover a 1/2 in NPT threaded opening or plug-in connections, while the die-cast zinc enclosure with epoxy coating provides rugged protection across varied environments. The enclosure supports a broad range of installation environments (NEMA 1/3/3S/4/4X/6/6P/13 and IP67) and threaded mounting, making the 3SE03-AS3 suitable as a direct replacement in Siemens control systems.