Speed Controller SPD-12250HD Installation and Wiring

Rated Voltage   12 Volts
Rated for Motors   Up To 250 Watts
Maximum Current   21 Amps
Rated for Chargers   Up To 3 Amps
Conversion Efficiency   95%
Under Voltage Protection   10.5 Volts ± 0.5 Volt
Recommended Fuse or Breaker Size   30 Amps
Dimensions   3-1/4" Long x 3" Wide x 1-1/2" High
Versatile Motor Power Range: Works with 12 Volt motors up to 250 Watts. Will run motors larger than 250 Watts however will limit their peak power to 250 Watts.

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 10.5 Volts ± 0.5 Volts)
Motor Cut-Off During Braking: When the brakes are engaged the brake switch signals the controller to turn off the motor. The motor resumes running when the brake is released.
*Power Connector
Red = Positive
Black = Negative

Mating Connector Item # CNX-50


Required Connection

Motor Connector
Blue = Positive
Yellow = Negative

Mating Connector Item # CNX-50
Required Connection
Throttle Connector
Red = + 5 Volts Output
Black = Negative
Blue = 1-4 Volts Signal Input

Mating Connector Item # CNX-52
Required Connection
Key Switch Connector

Mating Connector Item # CNX-51
Required Connection
Battery Charger Connector
Black = Negative
Red = Positive

Mating Connector Item # CNX-51
~Optional Connection
Brake Light Connector

Mating Connector Item # CNX-51
~Optional Connection
Brake Lever Switch Connector

Mating Connector Item # CNX-51
~Optional Connection
Power Light Connector

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.