
Stephill SSDK12M | 11kW Super Silent Diesel Generator | Multi-Voltage | Kubota Stage V Engine
SKU: SSDK12M
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Stephill SSDK12M 10.8kW Super Silent Multi-Voltage Diesel Generator | Kubota Stage V Engine
The Stephill SSDK12M 10.8kW Super Silent Multi-Voltage Diesel Generator is designed for professional users who require reliable 400V, 230V and 115V power from one robust, enclosed generator.
Delivering a maximum output of 13.5kVA / 10.8kW at 400V and a continuous output of 12kVA / 9.6kW, it is suitable for construction sites, workshops, agricultural operations, industrial premises, equipment-hire fleets and standby-power applications.
Important Delivery and Offloading Information
Due to the size and weight of this generator, suitable mechanical offloading equipment must be available at the delivery address.
The customer must arrange access to a forklift, telehandler, crane or similar lifting equipment. Offloading equipment and labour are not included with delivery, and the site must provide suitable access for the delivery vehicle.
Kubota Stage V Diesel Engine
The Stephill SSDK12M is powered by a professional 1500rpm Kubota water-cooled diesel engine.
Its low-speed operating design is suited to prolonged generator use, helping provide dependable performance, lower engine wear and reduced operating noise.
The engine complies with EU Stage V emissions requirements and incorporates automatic shutdown protection for:
- High engine temperature
- Low oil pressure
Multi-Voltage Power Output
The SSDK12M provides 400V three-phase, 230V single-phase and 115V site power.
At 400V, it delivers:
- Maximum power: 10.8kW
- Continuous power: 9.6kW
At 230V/115V, it delivers:
- Maximum power: 10.1kW
- Continuous power: 8.9kW
The fitted socket configuration includes:
- 1 × 115V 16A
- 3 × 115V 32A
- 1 × 230V 16A
- 2 × 230V 32A
- 1 × 400V 32A
- 1 × spurred 230V 16A outlet
This versatile output configuration makes the generator suitable for professional 115V site tools, standard 230V equipment and compatible 400V three-phase machinery.
Deep Sea DSE3110 Controller
The integrated Deep Sea DSE3110 controller provides straightforward push-button starting and stopping.
A two-wire remote-start facility allows the generator to be controlled by compatible external equipment or a suitably configured automatic transfer arrangement.
The lockable control-panel housing helps protect the controls and prevent unauthorised operation.
Super-Silent Acoustic Enclosure
The generator is housed within a close-fitting acoustic cabinet designed to reduce operating noise and protect its internal components.
The enclosure is manufactured from Zintec steel, helping provide increased resistance to corrosion and demanding site conditions. Large access doors allow convenient inspection, servicing and maintenance.
The SSDK12M has a stated noise level of approximately 59dB(A) at 7m, making it suitable for applications where reduced sound levels are important.
Brushless AVR Alternator
The SSDK12M features a maintenance-free brushless alternator with Automatic Voltage Regulation.
The AVR system regulates output voltage to approximately ±1%, helping provide a stable electrical supply for connected tools, equipment and machinery.
Long-Running 120-Litre Fuel Tank
The integrated 120-litre diesel tank provides up to approximately 41 hours of runtime, depending on load, operating conditions and generator maintenance.
This extended runtime makes the generator well suited to prolonged site use, remote locations and standby applications where frequent refuelling would be inconvenient.
Key Features
- Maximum output of 13.5kVA / 10.8kW
- Continuous output of 12kVA / 9.6kW
- 400V, 230V and 115V outputs
- Maximum 230V/115V output of 10.1kW
- Continuous 230V/115V output of 8.9kW
- 1500rpm Kubota water-cooled diesel engine
- EU Stage V emissions compliant
- Deep Sea DSE3110 controller
- Push-button electric start and stop
- Two-wire remote-start facility
- Brushless maintenance-free alternator
- AVR voltage regulation to approximately ±1%
- High engine-temperature shutdown
- Low oil-pressure shutdown
- Lockable control-panel housing
- Corrosion-resistant Zintec steel cabinet
- Large maintenance-access doors
- 120-litre integrated fuel tank
- Up to approximately 41 hours’ runtime
- Noise level of approximately 59dB(A) at 7m
- Weight of 592kg
Delivery & Returns
Fast UK delivery
Express delivery on mainland UK orders placed before 1pm (working days). Scottish Highlands, islands and offshore destinations may take a little longer — call 0800 222 9069 for a quote.
Easy 30-day returns
Not right for the job? Return unused items in their original condition and packaging within 30 days for a refund or exchange. See our Returns & Refunds policy for full details.
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