The 71BS30-01-3-04N is a multi-deck rotary switch from Grayhill's Series 71 line, designed for applications requiring reliable position selection with a 0.75" diameter and 36° angle of throw. This switch features 10 positions with continuous rotation capability, non-shorting contacts rated at 250 mA for 20,000 cycles, and is available in multiple deck configurations (up to 5 decks for this configuration). The switch incorporates molded-in position terminals, a 0.250" diameter shaft with 3/8-32 UNEF-2A thread, and is military qualified to MIL-DTL-3786/39 standards. Its robust construction and proven performance make it suitable for industrial control panels, instrumentation, and applications requiring durable, multi-position switching with excellent electrical reliability.