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550A, 72-120 VDC
EV Motor Controller
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1231C-7701<br>550A, 72-120 VDC<br>EV Motor Controller
1231C-7701 550A, 72-120V EV DC Motor Controller
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550A, 72-120V

EV DC Motor Controller

For orders outside of the USA, please, contact us for shipping prices.

This EV DC motor controller provides smooth, silent, efficient and cost effective speed control for on-road electric vehicle applications. This controller utilizes power MOSFET technology to provide benefits unavailable with older speed control systems.

This 550A 72-120V controller is a high power, heavy duty MOSFET electronic motor speed controller which is ideal for use in electric commuter vehicles, light delivery trucks, and other vehicles utilizing up to 144 volts.

Quantity Price
1+ $1,560.00
Price with Options:

(Discounts, if applicable, will show in the "Shopping Pallet")

Notice: The prices shown are for merchandise and do not include shipping. Shipping will be billed separately.

Prices shown may be changed without notice.

1231C-7701 550A, 72-120V EV DC Motor Controller
Curtis PB-6 Pot Box Throttle?
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Detailed Specifications





Peak motor and battery current:




Continuous motor and battery current:




Battery voltage range:



Switching frequency:

15/1.5 kHz


  • High frequency switching and ultra-low voltage drop provides very high efficiency and quiet operation. Costs, heatsink requirements and motor and battery losses are reduced. Low end toque, range and battery life are increased.
  • Environmental protection provided by a sealed (factory serviceable), rugged, anodized aluminum extrusion housing. Simple mounting and wiring with push-on type connectors for control signals. Plated solid copper busses used for all power connections.
  • Thermal protection and compensation circuit provides under-temperature cutback, constant current limit over operating range, and linear rollback in over-temperature. No sudden loss of power under any thermal conditions.
  • Frequency shifting from 15 kHz to 1.5 kHz at low throttle settings provides improved protection against stalled motors.
  • Heavy duty power base in 1231C contains additional active devices to improve power handling capability.
  • Potentiometer fault protection circuitry disables the controller if the throttle wires become open.
  • High Pedal Disable prevents controller operation if the key switch is turned on while throttle is applied.
  • Optional heatsink (p/n 16286) for model 1231C controller
  • improves thermal capability
  • No adjustments are required.
  • Simple installation — Uses a two wire throttle potentiometer.





There are 2 ways to get an exact quote for the base shipping for your 1231C-7701 550A, 72-120V EV DC motor controller order.

1.  Contact us at (801) 566-5678 9am-5pm Monday-Friday or email [email protected] or go through our Contact Us page




2. Place your order by clicking in the shopping pallet “Proceed To Checkout”

a. Enter your information so we can get you a shipping quote

b. Select the “Shipping Method” of preference

c. Confirm the “Choose one payment method” has “Shipping Quote Request” selected

d. Click the “Check Out” button

e. You’ll receive a confirmation email of your request, as will we


We’ll research the exact shipping cost and send you an invoice to your PayPal or email or you can add it to your pallet in $1 Shipping Increments for your 1231C-7701 550A, 72-120V EV DC motor controller order.



Quantity discounts show in the “Shopping Pallet”.

We love to meet or beat any competitor’s price!


Higher volume discounts, price matching or questions?

Contact Carl, our resident specialist.

9am-9pm Mon-Sat MDT

(801) 566-5678

or email

[email protected]


[email protected]

or through our Contact Us page

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