Harsen GU315A Generator Controller

Automatic Generator Start and Protection Module

The Harsen GU315A is a smart automatic start/stop generator controller designed to provide full monitoring, control, and protection for diesel generator sets. Equipped with a microprocessor-based design, it ensures precise measurement, stable operation, and reliable performance in both standby and prime power applications.

This controller features Auto, Manual, and Test operating modes, allowing flexible control and easy configuration. It continuously monitors generator voltage, frequency, and engine parameters, while providing complete protection against abnormal conditions such as low oil pressure, high temperature, and overspeed.

Key Features:

• Automatic, manual, and test operation modes

• Real-time monitoring of voltage, frequency, and running status

• Built-in protection for engine and alternator faults

• LED indicators for alarms and operating status

• Compact 72×72mm panel-mounted design

• Wide operating voltage range (8–35V DC)

• RS-485 communication interface for remote monitoring

• Durable construction for long-term reliability