+3 Mechanical Speed Switch - SA-1644 - Synchro-Start SA-1644 $3,468.00 In stock Quantity: 1 Add to Bag Product Details Brand: Dyna Synchro-Start Speed Switch Cross Over Part No.: MGO Mini Do you have a question about Synchro-Start products? Contact Us The Synchro-Start (Formerly Woodward) SA-1644 is an exact OEM replacement now manufactured by QCC. Download Technical Document G03MA model speed switch 3 element speed switch Trip setting SW1 = 300 RPM, SW2 = 837 RPM, SW3 = 1212 RPM 10 amp switch contacts Field adjustable Save this product for later Favorite