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Home Open-frame Diesel Generator Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz
Cummins 4BT3.9-G2 Open Frame Diesel Generator Set | 30–40kW Industrial Diesel Genset 400V 50Hz

Cummins 4BT3.9-G2 open type diesel generator set is powered by the proven Cummins B Series 3.9L inline 4-cylinder diesel engine. It delivers approximately 30–40kW stable output with 1500/1800rpm operation. Featuring low fuel consumption, fast load response, and strong durability, it is ideal for industrial backup, rental power, and small commercial applications.

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Engine & Performance Overview

Powered by the reliable Cummins 4BT3.9-G2 inline 4-cylinder diesel engine, this generator delivers approximately 30–50kW output range (depending on configuration) with strong torque, fast load response, and stable frequency control.

⚡ Key Advantages

  • Proven Cummins B Series durability

  • Low fuel consumption & high efficiency

  • Compact structure for easy installation

  • Strong adaptability for harsh environments

  • Stable 1500/1800rpm operation

Application Scenarios

  • Construction sites

  • Industrial backup power

  • Rental power systems

  • Small manufacturing plants

  • Commercial emergency supply

Electrical Features

  • Voltage: 400V / 230V optional

  • Frequency: 50Hz / 60Hz available

  • Control system compatible with ATS

  • High precision AVR voltage regulation

Product Value

The 4BT3.9-G2 open type generator is designed for users who require cost-effective, reliable and easy-maintenance power solutions. It combines Cummins’ global engine technology with robust alternator performance, ensuring long-term stable operation and reduced downtime.

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