描述

The 197614MN is a 2-pole thumbwheel switch from EECO's 1976 Series, designed to provide Excess 3 code with complement output across 12 switching positions. This compact switch measures 0.350 inches wide, optimizing front panel space while maintaining industry-standard reliability. The switch features a minimum life rating of 1,000,000 detents at 10 mA and 5 VDC, with a tangential operating force of 5-16 ounces for the 1976 Series. Electrical specifications include a maximum switching load of 125 mA at 28 VDC or 115 VAC, contact resistance of 100 mO initially and 200 mO after life testing, and dielectric withstanding voltage of 500 VAC (RMS) for double-pole models. The switch operates reliably across -20°C to +75°C and features gold over nickel plating on contacts with polycarbonate construction per Federal Spec LP-393A. Common applications include industrial control panels, instrumentation, and data entry systems where precise decimal encoding and space-constrained mounting are required.