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Sevcon G4827


These Gen4 AC controllers are intended for on-road and off-road electric vehicles and feature the smallest size in the industry for their power capacity. Thanks to the high efficiency it is possible to integrate these controllers into very tight spaces without sacrificing performance. The design has been optimized for the lowest possible installed cost while maintaining superior reliability in the most demanding applications.


  • Advance flux vector control
  • Autocheck system diagnostic
  • Integrated Logic Circuit
  • Hardware & software failsafe watchdog operation
  • Supports both PMAC motor and AC induction motor control
  • Sensorless control for select applications
  • Integrated fuse holder
  • IP66 Protection


  • Nominal Voltage: 36-48 Volts
  • Operating Voltage: 20-69 Volts
  • Current: 275 Amps
  • Continuous Current: 110 Amps
  • Boost (10 Sec): 330 Amps

These will not work off the shelf without programming. Comes pre-programmed when purchased with a Sailboat Kit. Additional programming starts at a $50 minimum. Also see our Programmers page.

Ships without a multipin connector or throttle. Use the links below for ordering these separately. Custom harnesses are available starting at $150 depending on required interfaces and harness length.

Multipin Connector

Throttle Controls



Video - Simplified Wiring Diagram

Included Components