The 100DP3T1B1M1QEH is a 3-position double-pole double-throw (DPDT) rotary switch designed for panel-mount applications with a standard locking ring. It features a DPDT circuit configuration with three selectable positions: Position 1 connects terminals 2-3 and 5-6, Position 2 is neutral (no connection), and Position 3 connects terminals 2-1 and 5-4. The switch is rated for 2A at 250 VAC, 5A at 120 VAC, or 5A at 28 VDC, with silver contact material providing reliable electrical performance. Key electrical specifications include an insulation resistance of 1,000 megaohm minimum, dielectric strength of 1,000 V RMS at sea level, and an operating temperature range of -40°C to +85°C, with an electric life of 6,000 make-and-break cycles at full load. This switch is ideal for industrial control applications, equipment selector functions, and multi-position switching scenarios where robust, reliable switching is required.