Elettrointerruttore, 1SR, 121301AA-3, Interruttore di azione a scatto rotante, NSN 5930-01-211-4473
1SR Series Military Grade Switch. Heavy duty, 2 - 4 position snap-action rotary switch up to 12 poles. Switching speed not dependent on operator action. Excellent for DC as well as AC switching. 2-3 position limited rotation.