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NPX STOCK or OEM Products used for
SERIES Wound or Permanent Magnet
Electric Motors
Model Size
6.5" Short
Battery Voltage
Current Limit (Peak)
300 Amp
2 Min Rating
275 Amp
300 Amp
1 Hour Rating
125 Amp
135 Amp
Voltage Drop(*) @100Amp
Model number breakdown, for example the { NPX4834-EZ } is broken down as:
  • NPX - Family name
  • 48 - First two digits = Battery String Voltage (two digits)
  • xx3x - third digit = amperage, 3=300 Amp model
  • xxx4 - fourth digit = Case size small heat-sink
  • "EZ" - Identifiers stipulates the EZ-Go throttle and wiring configuration
Type:  DC "SERIES WOUND" motor controller
Undervoltage cutback: adjustable, 16-30 VDC
Overvoltage shutdown: adjustable,
  • 30-60 VDC (48V models) (60VDC MAX)
Control Voltage range: KSI, Throttle, Reverse inputs
Control voltage range; Key Switch (KSI), Throttle and Reverse inputs:
  • 24-48 VDC, 60 VDC Max
Reverse Input: 50mA sink max
Standby Current (Powered Up): < 35mA
Throttle Input (Factory Programmed):
  • ITS (inductive)
  • Resistive 0-5K ohm (+/-10%) (2-Wire)
  • Resistive 5K-0 ohm (+/-10%) (3-wire)
Throttle Ramp Rates: 1.5 Seconds
Operating Temperature: -25C to 75C, 95C shutdown

Adapter Circuits: See Product Page - Golf Car Adapters
Model Breakdown                                                                                          
PRODUCT FEATURES                                                                                     
HeatSink SHORT 6.5
Note:  The last digit in the NPX model number denotes heat sink size.  See mechanical drawings below.
>xxx4 replaces the Curtis 1204 short heat sink at 6.5" in length (165.1mm)
Did you know?
>The NPX takes MosFET
technology to provide
efficient operation.  
To ORDER these products - please checkout our [Dealer Locator] web we can help you!
NPX Product are for Factory Motors Only:

These units  are designed for OEM (Original Equipment Manufacturers) stock
replacement controllers for stock cars with
stock motors only. With a peak
current rating they are not designed for lifted or high performance vehicles.  
The design follows the motor manufacturers current and power
For a
high performance controller application - Please order our AXE motor
. The NPX controllers are not field programmable and must be
Wound Motors, (Field and Armature are in seeries).  These units are
designed specifically for factory equipped golf cars.

Customers demanded higher quality after-market replacement with a
warranty  instead of "REBUILT USED Controllers".  Alltrax stepped up and
designed a NEW product with a NEW warranty, the
NPX Non-Programmable
.  A cost effective solution to replace your aging or damaged stock
controller without buying a "rebuilt controller".

Features include:
  • Factory Programmed (These are not field programmable by the
  • Integrated anodized heat-sink with multi bolt pattern for flexibility
  • Fully encapsulated epoxy fill - environmentally rugged design
  • Advanced MOSFET power transistor design for excellent efficiency and
  • 1/2 Speed reverse
Return to PRODUCTS
PRODUCT STOCK WIRING CONNECTIONS                                                     
LED STATUS INDICATOR                                                                                
NPX Wiring Diagram:
An example of the inputs and outputs are
shown.  Click on the image to enlarge.  This
diagram is also shown on the NPX Mini-Manual
LED Status Indicator:
and used for troubleshooting.

The LED Blink Codes occur at power up, the number of green blinks indicates
the throttle configuration:  
  • 1 Green LED flash    = 0-5 kohm resistive
  • 4 Green LED flashes = EZ-GO inductive (ITS)
  • 7 Green LED flashes = ClubCar 5k-0 ohms, 3-wire throttle

Normal display status:      
  • Solid Green: Controller ready to run
  • Solid Red: Controller in programming mode (not for field use)
  • Solid Yellow:  Controller throttle is wide open, controller is supplying
    max output, and is not in current limit.

Trouble Shooting:
Error code display:# of RED blinks    indicates any error conditions that might

1 Red  =  Throttle Position Sensor Over Range.  Check for open wires.
2 Red  =  Under Temperature.  Controller below -25C
3 Red  =  HPD.  Throttle hasn't gone to zero during this power on cycle.
4 Red  =  Over Temperature.  Controller over 95C
5 Red  =  Not used
6 Red  =  Battery Under Voltage detected.  Battery V < under voltage slider
7 Red  =  Battery Over Voltage detected.  Battery V > over voltage slider
Click on image to enlarge
(large file size)
Document Depot
For more information see our
Document Depot:
EZ Models:
The NPX4834EZ & NPX4844EZ are set up for ITS throttle and have
the 5 pin E-Z-GO connection for a true plug and play controller.
Standard or ClubCar Resistive Throttle Models:
The NPX4834 & NPX4844 must be specifically ordered for:
  • 0-5K ohms, 2-wire
  • 5K-0 ohms, 3-wire
Applications Please Goto
our AXE Web Page

AXE Performance
Fits under the Stock Cover!
Click to Enlarge
Not all controllers use the A2 terminal (used
for plug braking). If not, bolt the two wires
together, insulate with tape or heat shrink,
then secure in safe location.
Did you know?
>  Series motors have the
Field and Armature coils
connected in Series?  

The NPX provides current  
through both the
Armature and field

Verify the motor is stock
before installing the
NPX.  If the motor is
modified, the AXE
product must be used.