The 44M30-01-4-03N is a Series 44 multi-deck rotary switch featuring a 1-inch diameter with 1 ampere contact rating and non-shorting contact configuration. This switch incorporates rugged construction with fixed stop arrangement, integral assembly nut, and a 3/8-32 UNEF-2A threaded stud for secure panel mounting. The device includes a bushing keyway measuring 0.066 ± 0.002 inches wide by 0.036 ± 0.003 inches deep, along with a non-turn tab (0.125 ± 0.003 inches wide by 0.031 ± 0.003 inches thick) to prevent rotation during installation. With a single deck configuration, the switch has an approximate weight of 48 grams and dimension A of 1.025 inches (26.04 mm), making it suitable for military-qualified applications adhering to MIL-S-3786/04 standards. This rotary switch is ideal for equipment requiring reliable, long-life switching operation in demanding industrial and military environments where precise position selection and durability are essential.