300 kVA Generators

Reliable 300 kVA Power for Demanding Applications

A 300 kVA generator provides a substantial and reliable power supply for commercial premises, industrial facilities and critical infrastructure. It is a versatile choice for organisations that need dependable standby power or a robust source of prime power where the mains grid is unavailable or unreliable.

Common applications include factories, warehouses, construction projects, healthcare facilities, telecommunications sites and data centres. A correctly specified unit can also support large offices, retail developments and agricultural operations. The exact equipment it can power depends on the combined electrical load, starting currents and the operating profile of each application.

Our 300 kVA models form part of our wider range of industrial diesel generators, supplied from the UK to customers worldwide. Every unit is built for demanding power generation duties and combines a proven diesel engine with components selected for reliability, efficient operation and straightforward maintenance.

Cummins 300 kVA Diesel Generators

Global Generators supplies 300 kVA Cummins models featuring genuine Cummins engines, Stamford alternators and Cummins PowerCommand control panels. This integrated design gives operators clear control over the generator while supporting accurate monitoring, protection and fault diagnosis.

As an authorised Cummins CPG reseller, we offer the UK’s best pricing on genuine Cummins generators. Our team also has more than 50 years of combined generator industry experience, allowing us to provide informed guidance on generator selection, installation requirements and optional equipment.

A 300 kVA diesel generator is well suited to applications where durability and consistent performance are essential. The engine, alternator and control panel work together as a complete power solution, helping to deliver a stable electrical output under changing loads.

Depending on the model and intended application, useful options may include a coolant heater and battery charger. These components help keep the generator ready to start, particularly when it is installed as an automatic backup system.

300 kVA 3 Phase Generator Output

Our range is designed for 3 phase, 400V applications. A 300 kVA 3 phase generator can supply approximately 433A at its rated output, making it suitable for powering substantial commercial and industrial loads.

Three phase output is widely used for large motors, machinery, pumps, compressors, heating and cooling systems, and other equipment with high electrical demand. It also allows power to be distributed across separate circuits, provided that the loads are balanced correctly.

A 300 kVA 3 phase diesel generator is therefore a practical option for factories, construction sites and larger buildings. In contrast, single phase generators are generally selected for lower-capacity applications and equipment that does not require a three phase supply.

For buyers who use the term genset, a 300 kVA 3 phase genset describes the complete generating package, including the engine, alternator, control system and supporting components. A 300 kVA 3 phase diesel genset uses diesel as its fuel source and provides 240 kW at a standard 0.8 power factor.

All models in this category operate at 50Hz, making them suitable for the UK and many international markets using this frequency. You can also explore our complete range of 50Hz generators for alternative power ratings.

Silent Canopied 300 kVA Generators

Every model in this category is supplied in a silent, weather-resistant canopy. A 300 kVA silent generator is designed to reduce operating noise while protecting key components from weather, dirt and accidental contact.

This makes canopied units suitable for sites where noise levels must be managed, including commercial developments, hospitals, residential areas and occupied industrial premises. The enclosure also creates a secure and practical package for transport, positioning and routine servicing.

A 300 kVA silent diesel generator will not operate without noise, but its acoustic enclosure provides a substantial reduction compared with an unenclosed generating set. Actual sound levels vary between models and should be checked against the proposed site position and any local planning or environmental requirements.

The canopied design distinguishes these units from open generators, which are usually installed within a purpose-built generator room or a separate acoustic enclosure. Buyers comparing different enclosure types can view our wider range of silent generators.

Built for Prime and Standby Power

A 300 kVA diesel genset can be specified for either prime or standby use, subject to the model’s published ratings and operating limitations. The required rating should always be based on how the generator will be used.

Prime power applies when the generator supplies electricity as a main power source, often for extended periods and with a variable load. This may include remote industrial sites, temporary projects or locations without a dependable grid connection.

Standby power applies when the generator provides emergency backup during a mains failure. In this role, the generator can be paired with an automatic transfer switch to detect an outage, start the set and transfer the connected load. Our wider range of standby generators includes options for many different site requirements.

Correct sizing is essential in either application. An undersized set may struggle with peak demand or motor starting currents, while excessive oversizing can lead to inefficient operation. Reviewing the connected load, usage pattern and future expansion plans provides greater peace of mind and helps protect the equipment.

Fuel Capacity, Efficiency and Installation

Fuel consumption depends on the exact model, load percentage, operating conditions and maintenance standard. At full load, a unit in this category will typically consume around 60–70 litres of diesel per hour. Consumption will usually be lower when the generator operates below its maximum rated output.

The usable runtime also depends on fuel tank capacity. When longer operation is required, an additional bulk tank or fuel transfer system may be suitable. Any fuel installation must comply with relevant local regulations and include suitable protection against leaks and spills.

Space must also be allowed around the generator for ventilation, exhaust routing, cable connections, refuelling and servicing. A 300 kVA genset produces significant heat, so the proposed location must provide enough airflow for cooling without allowing hot discharged air to recirculate.

Our 300 kVA diesel range is held as part of our physical inventory wherever stock permits. As a leading stockist, we can arrange fast delivery across the UK and efficient global export. Buyers considering nearby capacities can also compare our 250 kVA generators and 400 kVA generators.

300 kVA Generator FAQs

Reserve Your 300 kVA Generator

Contact our experts today for more information about our range of 300 kVA generators or to reserve your generator. Speak with us by phone, WhatsApp or email, or submit your requirements through our enquiry form.