The 100DP3T1B1M2REH is a three-position DPDT rotary switch designed for panel-mount applications with a 1/4-40 UNS-2A threaded shaft. It features gold contact material and an epoxy seal for environmental protection, with a switching function that provides ON-OFF-ON operation across three positions (2-3 and 5-6 connected in position 1, open in position 2, and 2-1 and 5-4 connected in position 3). The switch is rated for 0.4 volt-amps maximum at 20V (AC or DC) with an electric life of 6,000 make-and-break cycles at full load, insulation resistance of 1,000 megaohm minimum, and dielectric strength of 1,000 V RMS at sea level. Operating temperature range is -40°C to +85°C, making it suitable for industrial control panels, instrumentation, and equipment requiring reliable multi-position switching with compact dimensions and standard locking ring mounting hardware.