SPDT contact set in a subminiature body
The Omron SS-5GL111D1 is listed as a subminiature limit switch with a Single Pole Double Throw (SPDT) contact block, meaning a single mechanical actuator drives both a normally open and a normally closed output from one common terminal — the standard wiring pattern for end-of-travel detection on small machinery and panel doors. The SS-5GL family sits in Omron's compact limit-switch line, and the SPDT arrangement here lets the integrator wire either fail-safe (NC for a safety stop loop) or signaling (NO for a PLC input) from the same switch without adding a second pole.
Where this switch class drops in
SPDT subminiature limit switches of this class typically land on hinge or sliding doors, guarding gates, and small linear-actuator end stops where a single switch must give the controller both a status signal and a stop command. The compact SS-5GL form factor is designed for tight-cabinet placements — panel builders mounting these inside machine guards or on conveyor side rails will want to confirm the actuator style, mounting pitch, and sealing class against the specific datasheet drawing before committing the BOM line, since the electrical ratings and IP grade are not carried on this listing's spec table.