Alltrax SR48400 Series Motor Controller EZGo TXT & Marathon Golf Carts

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Alltrax SR-48400 Motor Controller

- Fuse & Mounting Hardware Included
- For Series and Permanent Magnet Motors


  • Color coded terminals
  • 12-48 Volts
  • 400 Amps Peak
  • 460 (Peak Amp Mode)
  • Standard 4-spade
  • Flexible USB programming
  • Integrated heatsink mounts on any suitable surface
  • Solenoid Control for Main DC Control
  • Auto-throttle calibration for smooth operation


  • DC motor controller for series and permanent magnet motors
  • ABS + PC510 flame resistant thermal plastic enclosure
  • All copper heat sinks
  • Sealed epoxy UL-94-VO / 5VA flame rating (best in industry)
  • Adjustable undervoltage cutback 8-30 VDC
  • Adjustable overvoltage shutdown 22-62 VDC
  • Operating Frequency: 18k Hz
  • Voltage drop @ 100amps: <0.18V
  • Control voltage KSI keyswitch and reverse: 36-48V Nom, 62 VDC Max
  • Powered Up Standby Current <0.02A (20mA)
  • Relay solenoid drive output current: 5amp peak, 1.0A Continuous

Throttle Input Options

  • ITS (inductive, E-Z-GO)
  • 0-1K Yamaha
  • Resistive 0-5K ohm (+/-10%) 2-wire and 3-Wire
  • Resistive 5K-0 ohm (+/-10%) Club Car
  • 0-5Volt
  • 6-10.5Volt (Taylor Dunn)


PDF For Alltrax Data Sheets, see our FAQ and Documents.

1 Review

  • 5
    Better than OEM

    Posted by Larry Pyle on 17th Sep 2022

    We've bought a few different controllers from this company and they have all worked great. The customer service has been very helpful when trying to figure out what part to order. They will also provide wiring schematics as well. All around great company!