The 100SP1T1B1M2QE is a single-pole double-throw (SPDT) rotary switch designed for panel-mount applications with three selectable positions. It features silver-plated terminals with a 1/4-40 UNS-2A threaded mounting interface and an epoxy seal for environmental protection. The switch is rated for 5A at 120VAC or 28VDC (2A at 250VAC), with an electrical life of 40,000 make-and-break cycles at full load, an insulation resistance of 1,000 MO minimum, and a dielectric strength of 1,000 V RMS at sea level. Operating temperature range is -30°C to 85°C, ensuring reliable performance across diverse industrial and commercial environments. This switch is commonly used in control panels, instrumentation, and equipment requiring manual position selection with secure electrical switching.