The 44UA30-01-4-02N is a Series 44 multi-deck rotary switch manufactured by Grayhill, designed for rugged industrial and military applications requiring reliable switching control. This switch features a 1-inch diameter shaft, 1 amp contact rating, 30° angle of throw, 1 deck, 4 poles per deck, and 2 positions per pole with non-shorting contacts. The switch is constructed with silver alloy rotor and stator contacts, brass terminals with tin plating, and stainless steel mechanical components including the shaft extension, stop arm, and retaining hardware, ensuring durability and long operational life. The non-turn tab and bushing keyway design prevent unintended rotation, while the integral assembly nut provides secure panel mounting. This switch is ideal for applications requiring precise position selection, equipment control panels, and systems where MIL-S-3786/04 qualification is required, offering both standard and military-qualified versions with optional features such as adjustable stops and PC termination.