The 100SP1T1B1M1REH is a single-pole double-throw (SPDT) rotary switch designed for panel-mount applications with three selectable positions. It features gold-plated contacts rated for 0.4 volt-amps maximum at 20V (AC or DC), with a dielectric strength of 1,000 V RMS at sea level and an insulation resistance of 1,000 megaohm minimum. The switch operates reliably over a temperature range of -40°C to +85°C and is rated for 6,000 make-and-break cycles at full load. With a 1/4-40 UNS-2A threaded mounting and an epoxy seal, this switch is well-suited for instrumentation, control panels, and low-power signal routing applications where compact size and reliable switching are essential.