The 100SP1T2B3M1QEH is a three-position panel-mount toggle switch featuring a single-pole double-throw (SPDT) circuit configuration with positions for ON, NONE, and ON functionality. It incorporates silver contact material and is rated for 2A @ 250 VAC, 5A @ 120 VAC, or 5A @ 28 VDC, with an electric life of 6,000 make-and-break cycles at full load. The switch operates reliably across a temperature range of -40°C to 85°C and features an insulation resistance of 1,000 megaohm minimum and dielectric strength of 1,000 V RMS at sea level. The device is designed for standard panel mounting with a 1/4-40 UNS-2A threaded shaft (Ø2.68 mm) and includes an epoxy seal for environmental protection. This switch is commonly used in industrial control panels, instrumentation, and equipment requiring reliable switching with compact form factor and robust electrical performance.