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Home Open-frame Diesel Generator Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 Open Type Diesel Generator Set | 30–40kW Industrial Diesel Generator 50/60Hz
Cummins 4B3.9-G2 open type diesel generator set is powered by a 3.9L inline 4-cylinder Cummins B series engine. It delivers 30–40kW stable output at 1500/1800rpm, offering reliable performance, low fuel consumption, and strong load response for industrial, rental, and backup power applications.
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The Cummins 4B3.9-G2 open type diesel generator set is built with a proven Cummins B Series 3.9L inline 4-cylinder diesel engine, designed for durability, efficiency, and long service life. According to official specifications, it provides approximately 31–38kW prime power and up to 34–42kW standby power, suitable for both 50Hz and 60Hz applications.

This open frame diesel generator features excellent transient response, stable voltage regulation, and low fuel consumption, making it ideal for industrial backup power, construction sites, rental fleets, and small-to-medium commercial facilities.

Equipped with a robust alternator system and Cummins PowerCommand-compatible control options, the 4B3.9-G2 ensures reliable start-up, smooth load handling, and continuous operation under demanding conditions.

Its compact structure allows easy maintenance and installation, while the heavy-duty engine design ensures long operational life even in harsh environments. It is a cost-effective and globally trusted solution for dependable power generation needs.

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