Earn $5 in Winnie’s Rewards for every $150 spent • Free shipping $329+ (Lower 48)

Alltrax SR series motor controller family reference image; voltage, amperage and mounting configuration vary by model

Alltrax SR72400 400A Series DC Motor Controller | 12–72V

SKU: SR72400

Regular price
$764.99
Sale price
$764.99
Unit price
per 
Shipping calculated at checkout.
Lower 48: $15 shipping under $329 • Free shipping at $329+. Hawaii and Alaska shipping charges will be added manually.
Allow 1–5 business days for processing. Delivery timing varies. Shipping details

Need help choosing the right part? Contact us with your cart year, make and model.

Alltrax SR72400 — 400A High-Voltage Series DC Controller

Programmable 12–72V series DC controller for compatible, properly engineered series-motor systems.

Features include USB programming with Alltrax Toolkit, configurable throttle input, sealed electronics and an integrated heat sink. A cooling fan is optional on the 400A model.

Not a stand-alone 72V conversion

Installing this controller does not make a stock 36V/48V cart ready for 72V. Verify the motor's voltage/speed limits, fully charged battery voltage, battery capability, throttle signal, contactor, cables, charger and auxiliary circuits as a complete system.

Not for separately excited/regen XCT systems or AC motors. Mounting and throttle configuration must match the application; an adapter may be required and is not assumed included. The 400A designation is a current class, not an unlimited continuous rating.

Motor, cable kit and solenoid are not included. Representative SR family photo; supplied voltage, cooling and mounting configuration follow the ordered model.

SKU: SR72400
Condition: New

✓ Fitment verified

Verified for the application listed below. Your cart must match its configuration and installation requirements.

Brand and model narrow the collection. Check the listing for year, voltage, drivetrain and installation requirements.

Model
Series DC applications - complete-system verification required

12V / 24V / 36V / 48V / 72V

Electric

SR72400 12–72V series DC, configuration-dependent. Not sepex/regen XCT or AC. Controller alone does not convert a stock cart to 72V. Verify motor voltage/speed limits, maximum charged battery voltage, current capability, throttle, cables, contactor, charger and auxiliaries. Mounting adapter may be required. Fan optional.

Fitment and installation requirements

Get help choosing the right part

Your selected product and cart details are included below. Tell us what you are replacing or trying to improve.

To send photos, open an email and attach them before sending. This website form sends text and image links, not uploaded attachments.

Helpful photos: the whole cart, its identification label, the old part number, and visible connectors. Do not disconnect wiring just to take a photo.

Edit cart details

Cart details are saved on this device only. Do not enter personal information here. Changing carts clears the previous configuration.

Unknown details will not be treated as confirmed.

Not sure which cart you have?

Use the vehicle label and manufacturer guidance to identify your cart. Body panels, batteries and drivetrains can be changed; a model name alone does not prove part compatibility.

Club Car

Club Car: check the barcode label below the passenger-side cup holder or above the pedals. The model letters are followed by the model-year and production-week digits. Use the manufacturer directory to confirm the prefix.

Open manufacturer identification guide

E-Z-GO

E-Z-GO: for models purchased before 2023, the manufacturer points to the steering column or below the driver-side seat. Location varies by model. Photograph the complete label, including the manufacturer code.

Open manufacturer identification guide

Yamaha

Yamaha: check under the seat at the floorboard/motor compartment, on the frame under the rear bumper, or beneath the driver-side glove box. Use the full identification label, not just the body appearance.

Open manufacturer identification guide

Park securely, set the parking brake and remove the key before looking for labels. Do not touch electrical terminals or work underneath an unsupported vehicle.

Compare selected products