Compact 4.3-inch X 5.5-inch x 2.16-inch Footprint

GSC300 Digital Genset Controller

Includes 6 Engine Instruments

The GSC300 is designed to provide autostart control, protection, and engine instrumentation for all types of diesel and gas generator sets. The module is easily configured using either the front panel buttons  or our PC configurator software. The GSC300 provides direct mounting compatibility with other DynaGen controllers such as the  GSC400 to allow for a full range of options to fit the application.


  • Oil Pressure
  • Engine Temperature
  • Fuel Level
  • Hour Meter
  • Frequency
  • Battery Voltage
  • Conformally coated for protection against moisture and contaminants.
  • Customizable Screen Messages.
  • Configurable via front panel or PC.
  • Accepts industry standard senders (VDO, Stewart-Warner, Datcon, Murphy).
  • Zero speed restart prevents starter pinion wear.
  • Timers for: Pre-heat/Warm-up/Energize-to-stop, Cool-down, Engine Start Delay, Mid-heat and Post-heat.
  • Low Battery Indication.
  • Restart on false attempts.
  • Optional Fuel OFF during crank rest period.
  • 5-Year Warranty.

Incorporates the Functions of 6 External Gauges
The GSC300 displays 6 critical engine readings through a backlit digital display augmented by 8 high-intensity lights for failure and status conditions. A built-in Auto/Manual/Off Switch is also included.

3 On-board Replaceable 40A Relays & Fuses The GSC300 is socketed to accept 3 industry standard 40A cube relays – each protected by a replaceable automotive fuse. The GSC300 eliminates the need to mount, wire, and fuse external slave relays for Fuel, Crank, and Pre-heat.

Computer or Manually Programmable
The GSC300 can be programmed manually via front panel buttons or with our free, easy-to-use PC software interface that provides customization of screen messages, languages, sender selections, and control settings.


Operating Voltage

  • 7 to 30VDC continuous, with zero volts cranking dropout protection
  • Reverse battery protected
  • Standby current draw: 40mA
  • Surge withstand: 1500V for 250μS

Operating Temperature

  • Controller Function: -40 to +85°C
  • Display Screen Viewing: -15 to +70°C


  • Dimensions: 4.3”H x 5.5”W x 2.16”D
  • Weight: 0.75 lb
  • Speed Sensing
  • Generator Output: Up to 300VAC (no external transformer required)


  • Oil Pressure Input – Sender (0-500Ω) or Switch*
  • Engine Temp Input – Sender (0-500Ω)  or Switch*
  • Fuel Level/Aux Input – Sender (0-500Ω) or Switch*
  • *Failure inputs must close to ground.
  • All failure inputs are ignored for a adjustable bypass period.


  • Fuel, Crank & Preheat/WarmUp/ETS: 40A high capacity replaceable automotive relays:
    • – Switched to battery positive
    • – 12 or 24 VDC battery system (select appropriate relay for system voltage)
  • Short circuit & overload protection on annunciation outputs (rated 300ma max.)