The 50M45-01-1-05N is a single-deck rotary switch manufactured by Grayhill, designed for low-current switching applications requiring compact panel-mount construction. This switch features a 0.5" diameter with a 22.5° angle of throw, 1 pole, and 5 positions per pole with non-shorting contacts and PC mount termination. It is rated for 200 mA continuous current and includes optional complete seal for PC board assembly and cleaning, positive shaft grounding for EMI/RFI shielding, and a 1/4"-28 UNF-2A threaded terminal. The switch operates across a standard industrial temperature range and is commonly used in instrumentation, control panels, and equipment requiring reliable position selection with minimal space requirements.