Speed Controller SPD-482000A Installation and Wiring

Rated Voltage   48 Volts
Rated For Motors   Up To 2000 Watts
Maximum Current   60 Amps
Conversion Efficiency   95%
Under Voltage Protection   41 Volts ± 1 Volt
Recommended Fuse/Circuit Breaker Size   60 Amp
Dimensions   6-1/2" x 3-1/2" x 2"
Thick Wire Length   7"
Thin Wire Length   3"
Two Thick Red Wires: The two thick red wires are connected together inside of the controller so it does not matter which thick red wires go.

Requires Heavy-Duty Switch or Power Contactor: This controller does not have a built in power relay to turn it on and off. A heavy-duty power disconnect switch such as item # SWT-700 or SWT-705 or power contactor such as item # RLY-24150 is needed to turn this controller on and off. to the battery pack or motor.

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 41 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. The motor turns on again after the brakes are released.
*Power Connector
Red = Positive
Black = Negative


12 Gauge Stranded Copper Wire
Required Connection
Motor Connector
Red = Positive
Blue = Negative


12 Gauge Stranded Copper Wire
Required Connection
**Throttle Connector
Red = +5 Volts Output
Black = Negative
Green = 1-4 Volts Input Signal


Mating Connector Item # CNX-52
Required Connection
Brake Switch Connector
Black+Yellow Disconnected = Motor On
Black+Yellow Connected = Motor Off


Mating Connector  Item # CNX-51
Optional Connection
*The battery pack should be the last connection made.
*Fuse or circuit breaker protection and power switch or power relay are required to be installed between the speed controller and the battery pack.
*Power switch/relay and fuse/circuit breaker connects to the red wire between the speed controller and battery pack.
**Requires standard 3-wire throttle to operate.