
Cummins C550D5
550 kVA Silent Diesel Generator
440 kW
400 kW
£53,535 Ex Works + VAT

£53,535 Ex Works + VAT
The Cummins C550D5 is a high-performance 550 kVA diesel generator engineered to deliver dependable standby power and efficient prime power for critical operations across industrial, commercial, infrastructure, and utility applications. Offering 550 kVA (440 kW) standby power and 500 kVA (400 kW) prime power, this robust generator combines proven Cummins engine technology with exceptional reliability, fuel efficiency, and operational resilience in demanding environments.
Power interruptions can have significant operational and financial consequences. The Cummins C550D5 has been designed to provide a reliable source of electricity whenever utility power is unavailable, helping organisations maintain continuity and protect essential equipment.
As a 440 kW standby generator, it is ideally suited to facilities that require dependable backup power during grid outages. Its substantial output capacity also makes it a practical choice for sites requiring continuous operation under varying load conditions, where its 400 kW prime power generator rating delivers reliable performance for extended periods.
From manufacturing facilities and distribution centres to healthcare environments, data infrastructure, commercial buildings and large-scale construction projects, the C550D5 offers the power capability needed to support critical operations with confidence.
At the heart of this generator set is the renowned Cummins QSZ13 engine, a turbocharged and charge air-cooled diesel engine engineered for demanding power generation applications. Designed to provide excellent load acceptance and responsive performance, the engine delivers stable power output while maintaining fuel-efficient operation.
The advanced electronic governing system helps ensure precise speed regulation and consistent frequency control, supporting sensitive electrical loads and modern equipment. This level of performance is particularly valuable in applications where power quality is essential, including telecommunications, healthcare facilities, industrial automation systems and critical infrastructure.
The engine's robust design is backed by Cummins' global reputation for reliability, making the C550D5 a dependable long-term investment for organisations that cannot afford unexpected downtime.
Businesses operating in challenging conditions require equipment capable of maintaining performance under pressure. The Cummins C550D5 has been developed to perform reliably in a wide range of operating environments, making it suitable for both permanent installations and major project deployments.
Its cooling system is engineered to support operation in high ambient temperatures, helping ensure dependable performance even in demanding climates. Combined with an efficient airflow design and heavy-duty construction, this makes the generator particularly attractive for international projects, remote locations and industrial facilities where environmental conditions can be demanding.
The generator's durable design supports applications including:
For many generator buyers, operating costs are just as important as power output. The Cummins C550D5 has been designed to provide strong fuel economy across varying load conditions, helping operators manage fuel consumption without compromising performance.
Efficient combustion, advanced turbocharging technology and optimised engine management contribute to reduced fuel usage throughout the operating range. This is particularly beneficial for businesses relying on the generator as a primary power source or operating in locations where fuel logistics can significantly impact running costs.
By balancing performance with efficiency, the C550D5 delivers an attractive total cost of ownership for organisations seeking long-term value from their power generation investment.
When utility power fails, response time and reliability become critical. The Cummins C550D5 is designed to start quickly and assume load efficiently, helping minimise disruption during unexpected outages.
Its dependable standby performance makes it well suited for organisations that require uninterrupted access to power, including facilities housing sensitive electronic systems, refrigeration equipment, production machinery and life-safety infrastructure.
For organisations developing comprehensive business continuity strategies, investing in a proven backup diesel generator can significantly reduce operational risk and improve resilience against power disruptions.
In locations where grid power is unavailable, unreliable or economically impractical, the Cummins C550D5 provides an effective continuous power solution. Its 500 kVA prime generator capability supports varying load profiles across extended operating periods, making it suitable for remote worksites, industrial facilities and infrastructure projects.
The generator's ability to handle changing electrical demands helps ensure stable performance as operational requirements fluctuate throughout the day. This flexibility is particularly valuable in sectors such as construction, mining and remote industrial operations where power demand can vary considerably.
One of the most significant advantages of selecting a Cummins generator is access to an extensive international support network. Businesses operating across multiple regions benefit from widespread parts availability, technical expertise and service support.
Whether the generator is installed in the United Kingdom, Europe, Africa, the Middle East, Asia-Pacific or other international markets, Cummins' global presence helps simplify maintenance planning and minimise potential downtime.
This level of support can be particularly valuable for organisations managing mission-critical operations or geographically dispersed assets where rapid service response is essential.
The C550D5 is available in configurations suitable for a wide variety of installation requirements. Customers can select solutions that align with site-specific operational, environmental and acoustic considerations.
Whether deployed as part of a permanent standby power system, integrated into a critical infrastructure project or utilised for temporary power generation, the generator's flexible design allows it to adapt to diverse operational requirements.
Its footprint and engineering design also support integration with associated power generation equipment, including fuel systems, transfer switches, synchronisation systems and remote monitoring technologies.
Selecting the right power generation solution requires balancing performance, reliability, operating efficiency and long-term support. The Cummins C550D5 brings together these essential qualities in a generator set designed for demanding real-world applications.
Key benefits include:
For organisations seeking a dependable 550 kVA generator capable of supporting critical operations, the Cummins C550D5 provides a powerful and proven solution that delivers confidence when reliable electricity matters most.
* at 100% prime rated load

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