Bulletin 520 NEMA Multi-Speed Starters Typical Wiring Diagrams (See Applicable Codes and Laws) 3 Phase Lines 3 Phase Lines L1 “A” L1 L2 L3 Control Circuit Fuses (when used) 3 L 6 HIGH 3 L 6 HIGH Bulletin 520E 2 Speed Separate Winding 2 5 3 4 2 LOW Bulletin 520F 2 Speed Consequent Pole 7 OL OL OL OL OL OL T11 T12 T13 T1 T2 T3 3 OL OL T6 T4 4 LOW 5 7 OL OL T1 T5 T4 OL T2 T3 T2 T5 T11 T13 T1 HIGH T3 T1 T2 Size 0…4 2-Speed Separate Winding, Constant or Variable Torque and Constant Horsepower with Eutectic Alloy Overload Relay or SMP-1 or SMP-2 Solid-State Overload Relay T1 T3 T6 T5 Constant Torque LOW OL T3 T4 Motor Terminal Markings T12 L3 5 H 5 H L2 “B” Control Circuit Fuses (when used) T2 T6 Variable Torque Size 0…4 2-Speed Consequent Pole, Constant or Variable Torque with Eutectic Alloy Overload Relay or SMP-1 or SMP-2 Solid-State Overload Relay 3 Phase Lines L1 L2 L3 Control Circuit Fuses (when used) 7 LOW 3 High H 5 L 4 5 6 3 2 Motor Terminal Markings T4 T3 Bulletin 520G 2 Speed Consequent Pole OL OL OL OL OL OL T5 T1 T2 T3 T6 T4 Constant Horsepower T1 T6 T2 T5 Size 0…4 2-Speed Consequent Pole, Constant Horsepower with Eutectic Alloy Overload Relay or SMP-1 or SMP-2 Solid-State Overload Relay Product Selection — Page 1-43 1-55