The 100SP1T1B1M2REH is a three-position panel-mount toggle switch featuring a single-pole double-throw (SPDT) circuit configuration with gold-plated contacts. It is rated for a maximum of 0.4 volt-amps at 20V (AC or DC) and supports 6,000 make-and-break cycles at full load, with an insulation resistance of 1,000 megaohm minimum and dielectric strength of 1,000 V RMS at sea level. The switch operates reliably over a temperature range of -40°C to +85°C and includes a 1/4-40 UNS-2A threaded mounting interface with an epoxy seal for environmental protection. This switch is commonly used in control panels, instrumentation, and industrial applications where reliable switching and compact panel integration are required.