Speed Controller SPD-CT312C1-3 Installation and Wiring

Rated Voltage   36 Volts
Rated For Motors   Up To 650 Watts
Maximum Current   30 Amps
Rated For Chargers   Up To 3 Amps
Conversion Efficiency   95%
Under Voltage Protection   31.5 Volts
Recommended Fuse Size   36 Amps
Under Voltage Battery Protection: When the battery pack falls below a specific Voltage the controller turns the motor off preventing over discharging of the battery pack which extends the battery packs lifespan. (The cutoff value is approximately 31.5 Volts ± 1.0 Volts)
Motor Cut-Off During Braking: When the brakes are engaged the brake switch signals the controller to turn off the motor.
*Power Connector

Thick Red = Positive

Thin Red = Positive
Black = Negative


Mating Connector
Item # CNX-150
Required Connection
Motor Connector
Yellow = Positive
Blue = Negative
Mating Connector
Item # CNX-50
Required Connection  
Throttle/Battery Gauge Connector

Throttle = Red, Black, Green
Battery Gauge = Yellow, Black
Mating Connector
Item # CNX-54
Mating Throttle
Item # THR-59
Throttle is a Required Connection
~Battery Indicator is an Optional Connection
Battery Charger Connector
Red = Positive
Black = Negative
Mating Connector
Item # CNX-51
~Optional Connection
Brake Lever Switch Connector 1
Mating Connector
Item # CNX-51
~Optional Connection
Brake Lever Switch Connector 2
Mating Connector
Item # CNX-51
~Optional Connection
*The power connector should be the last connection made.
*Fuse or circuit breaker protection is required between speed controller and battery pack.
~Optional Connections do not need to be hooked up for the speed controller to operate.