Cummins 4B Series 50kVA Diesel Generator for Villas & Residential Home Standby Power
| Engine: | Cummins | Fuel Type: | Diesel |
| Coolingsystem: | Radiator Cooled | Cooling System: | 40℃ Standard Water Cooling Cycle |
| Cerificate: | ISO9001/ CE | Rated Voltage: | 400V/230V |
| Starting Method: | DC 24V DC Start | Oil Supply Method: | Direct Injection |
| Debugging Method: | Electronic Speed Regulation | Air intake Method: | Turbocharged Intercooler |
| High Light: | Villa 50kVA Diesel Generator,Villa Diesel Generator 50kVA,Villa Generator Standby Power |
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Cummins 4B Series 50kVA Diesel Generator for Villas & Residential Home Standby Power
Product Overview
WOPUSAI Cummins 4B series 50kVA diesel generator set adopts original Cummins 4BT3.9-G2 engine, paired with high-efficiency brushless all-copper alternator. Compared with the 40kVA model, this unit optimizes power output while retaining the compact 4-cylinder 3.9L platform. The turbocharged 4BT3.9-G2 delivers stronger power reserve, excellent load response, ideal for medium standby power demand. It balances power performance and operating cost, widely favored by small factories and construction sites.
Product Showcase
WOPUSAI 50kVA Cummins 4B series generator set is built with turbocharged 4BT3.9-G2 power unit. The unit comes with integrated base and shock absorption pads, standard control cabinet for simple operation. The compact 3.9L 4-cylinder layout keeps the unit size manageable while upgrading power output, convenient for site delivery and installation.

Key Specifications
40kVA-63kVA 4B series series Cummins open frame unit |
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| Rated power | 33KW/40kVA | 40KW/50kVA | 50KW/63kVA |
| Rated current | 59.4A | 72A | 90A |
| Rated voltage | 400V/230V | ||
| Rated frequency | 50Hz/60Hz | ||
| Rated speed | 1500rpm/1800rpm | ||
| Fuel consumption | 250g/KW.h | ||
| Dimensions | 1750*650*1100mm | 1750*650*1100mm | 1750*650*1100mm |
| Unit weight | 750KG | 800KG | 950KG |
| Noise index | 110dB | ||
| Model | 4B3.9-G2 | 4BT3.9-G2 | 4BTA3.9-G2 |
| Number of cylinders | 4L | ||
| Bore stroke | 102*120MM | ||
| Exhaust volume | 3.9L | ||
| Starting method | DC 24V DC start | ||
| Cooling method | 40℃ standard water cooling cycle | ||
| Oil supply method | Direct injection | ||
| Debugging method | Electronic speed regulation | ||
| Air intake method | Inhale naturally | Turbocharging | Turbocharged intercooler |
| Generator configuration | Brushless all copper | ||
| Brand/Model | Foshan STAMFORD TFW-20 | Foshan STAMFORD TFW-30 | Foshan STAMFORD TFW-50 |
| Rated power | 33KW/40kVA | 40KW/50kVA | 50KW/63kVA |
| Insulation level | H | ||
| Protection level | IP 23 | ||
| Wiring method | Star connection | ||
| Adjustment method | AVR automatic voltage regulation | ||
| Power Factor | 0.8 lag | ||
✅ Core Advantages
- Turbocharged engine design, faster load pickup and stable output under sudden load changes
- Optimized combustion system, lower exhaust emission and good fuel economy
- Integrated shock absorption base, effectively reduce vibration and noise during continuous operation
- Complete protection functions: over-speed, low oil pressure, high water temperature, over-voltage protection
- Convenient maintenance access, easy for regular inspection and filter replacement
🎯 Application Scenarios
- Small manufacturing factories standby power supply
- Construction sites temporary mobile power
- Hotels, restaurants and medium-sized commercial buildings emergency power
- Water pump stations and small irrigation engineering power supply
Brand Introduction
Cummins is a world-leading power equipment manufacturer founded in 1919 in USA. It specializes in designing and producing diesel engines, generator sets and related power solutions. Cummins engines are widely recognized for outstanding reliability, fuel economy and global after-sales service network. Cummins 4B series engines are classic light-duty power products, well-proven in global markets for decades.
