Harsen GU304A Generator Controller

Engine Monitoring and Protection Module for Generator Sets

The Harsen GU304A is a compact and efficient engine control module designed for monitoring, protection, and operation of diesel generator sets. Built with microprocessor technology, it provides precise measurement and reliable protection to ensure stable and safe generator performance.

This controller continuously monitors key engine parameters such as oil pressure, coolant temperature, battery voltage, and engine speed. In case of faults like low oil pressure, high temperature, or overspeed, the GU304A automatically initiates shutdown to protect the generator. Its simple interface and durable design make it ideal for both industrial and standby applications.

Key Features:

• Genuine Harsen OEM controller (Model: GU304A)

• Monitors oil pressure, coolant temperature, and engine speed

• Built-in protection for overspeed, high temperature, and low oil pressure

• LED indicators for engine status and alarms

• Compact 72×72mm panel-mounted design

• Wide operating voltage range (9–32V DC)

• Reliable microprocessor-based control and easy installation