The 100SP4T1B1M2QEH is a single-pole, double-throw (SPDT) toggle switch designed for panel mounting. It features a momentary-on / off / momentary-on function and offers a dual contact rating of 5A at 120VAC or 28VDC, and 2A at 250VAC. This switch is built for reliability with an electrical life of 6,000 make-and-break cycles at full load and silver-plated terminals. It ensures robust performance with a dielectric strength of 1,000 V RMS and an operating temperature range of -40°C to 85°C. Suitable for industrial controls and instrumentation, it mounts via a 1/4-40 UNS-2A threaded bushing and comes with required hardware.