Harsen GU620A Generator Controller

Advanced Automatic Generator Control and Protection Module

The Harsen GU620A is a modern automatic generator controller designed to provide complete monitoring, control, and protection for single generator sets. Equipped with a powerful microprocessor and a clear LCD display, it ensures precise measurement, intelligent operation, and long-term reliability in industrial and commercial power systems.

This controller supports automatic, manual, and remote operation modes, allowing flexible use in different generator applications. It continuously monitors vital engine and alternator parameters such as voltage, frequency, current, oil pressure, coolant temperature, and fuel level, while offering full protection against system faults.

Key Features:

• Genuine Harsen OEM controller (Model: GU620A)

• 128×64 LCD screen with backlight and multilingual interface

• Real-time monitoring of voltage, frequency, current, and engine status

• Comprehensive fault protection: low oil pressure, high temperature, overspeed, and more

• Communication interfaces: RS-232, RS-485, and optional Ethernet/GPRS

• Multiple analog and digital I/Os for flexible system control

• Compact, panel-mounted design with durable construction

• Wide operating voltage range for industrial use