Siemens 3SE3170-1GW Limit Switch

Siemens Furnas 3SE3170-1GW is a sealed position switch (limit switch) from the 3SE3 family, designed for rugged machine sensing with snap-action contacts and a 1NO+1NC configuration. The unit features a roller/crank actuator and a 1/2" NPT conduit connection for field wiring in industrial environments. It provides two independent contacts—one normally open and one normally closed—for reliable position sensing and interlock control, making it suitable for end-of-travel detection, safeguarding interlocks, and control sequencing on conveyors, presses, and packaging lines. This model is part of Siemens’ international limit switch lineup and is intended for harsh industrial settings where robust, sealed switching is required.