Aurora Generators Cummins QuietConnect C125 N6 125KW Liquid-Cooled: RS125 Series - PowerGen USA - A063B604

Aurora Generators Cummins QuietConnect C125 N6 125KW Liquid-Cooled: RS125 Series - PowerGen USA - A063B604

Robust product design and testing - The generator is designed to operate under extreme environmental conditions including cold weather starts at as low as -40ºF. The generator is tested and certified per the latest EPA, UL and IBC Seismic standards and is capable of meeting NFPA110 requirements when equipped with the necessary accessories and properly installed.

Flexible exercise mode - The innovative, flexible exercise mode enables the generator to exercise at a time, frequency and duration that suits the customer's preference - as little as 2 minutes every 6 months - reducing unnecessary fuel consumption, emissions and noise.

Advanced enclosure design - The aesthetically appealing enclosure incorporates special designs that deliver the quietest generator of its kind. Aluminum material plus durable powder coat paint provides the best anti- corrosion performance. The generator set enclosure has been evaluated to withstand 180 mph wind loads in accordance with ASCE 7-10. The intelligent design has hinged doors to provide easy access for service and maintenance.

Control system - The PowerCommand® electronic control is standard equipment and provides total generator set system integration including automatic remote starting/stopping, precise frequency and voltage regulation, alarm and status message display, output metering, auto-shutdown at fault detection and NFPA 110 level 1 compliance.

Self-diagnostics and easy service - The PowerCommand® electronic control provides industry- leading self-diagnostic capabilities. In addition, critical components of the generator are designed to ensure service and preventive maintenance can be completed in a short period of time.

What our Experts Think

• Enterprise-level backup power: The Cummins QuietConnect C125 N6 RS125 Series delivers 125kW standby power (156 kVA), making it ideal for large commercial buildings, critical facilities, and high-demand residential applications requiring dependable automatic backup.
• Liquid-cooled industrial performance: Powered by a turbocharged and aftercooled 8.9L inline 6-cylinder engine, this generator is engineered for reliable operation under demanding conditions with excellent durability and long service life.
• Flexible fuel capability: The C125 N6 supports natural gas or propane vapor operation, giving facilities more fuel flexibility for emergency power planning.
• Quiet, weather-resistant design: The advanced sound-attenuated enclosure helps reduce operating noise while protecting internal components from harsh outdoor environments.
• Advanced power management: Equipped with PowerCommand 2.3 controls, intelligent monitoring, voltage regulation, and self-diagnostic features to simplify operation and maintenance.
• Built for critical applications: UL 2200 certification, EPA stationary emergency compliance, IBC seismic compliance, and NFPA 110 capability support use in demanding commercial and mission-critical environments.
• Expert verdict: A premium standby generator built for organizations that need high-capacity power, exceptional reliability, fuel flexibility, and professional-grade Cummins engineering for uninterrupted energy protection.

Q&A

Q: How much power does the Cummins QuietConnect C125 N6 RS125 generator provide?
A: The Cummins C125 N6 delivers 125kW standby power (156 kVA), providing reliable backup energy for large residential, commercial, and critical power applications.

Q: What fuel does the Cummins C125 N6 generator use?
A: It operates on natural gas or liquid propane vapor with a field-selectable fuel system for flexible installation options.

Q: Is the Cummins RS125 a liquid-cooled generator?
A: Yes, the RS125 features a liquid-cooled design with a turbocharged and aftercooled 8.9L inline 6-cylinder engine for dependable standby performance.

Q: Can the Cummins C125 N6 automatically provide backup power?
A: Yes, when paired with a compatible automatic transfer switch, it can automatically restore power during outages.

Q: What engine powers the Cummins QuietConnect C125 N6?
A: It uses the Cummins QSJ8.9G engine with an 8.9-liter displacement, electronic governor, and 1800 RPM operation for reliable long-term performance.

Q: Is the Cummins RS125 designed for quiet operation?
A: Yes, it features an advanced sound-attenuated aluminum enclosure with noise levels around 71 dB(A) at 23 feet for quieter standby operation.

Q: What voltage options are available for the Cummins C125 N6?
A: The RS125 series supports multiple configurations, including 120/240V single-phase and 120/208V or 277/480V three-phase options.

Q: Does the Cummins C125 N6 support remote monitoring?
A: Yes, it uses Cummins PowerCommand 2.3 controls with advanced monitoring, diagnostics, and generator management features.

Q: Is the Cummins QuietConnect C125 N6 suitable for commercial and whole-building backup?
A: Yes, its 125kW capacity, flexible fuel options, and standby-rated design make it ideal for large homes, businesses, healthcare facilities, and critical infrastructure backup.

Maintenance Tips

• Check engine oil levels regularly and follow the recommended service schedule to maintain reliable standby performance.
• Replace oil filters and inspect lubrication components during routine maintenance to protect engine life and efficiency.
• Inspect and clean air intake components to maintain proper airflow and efficient engine operation.
• Check coolant levels and cooling system components regularly to prevent overheating and maintain liquid-cooled performance.
• Inspect battery terminals, charging system, and starting components to ensure dependable automatic startup during outages.
• Check natural gas or propane fuel connections for secure fittings, proper pressure, and reliable fuel delivery.
• Keep the enclosure, ventilation openings, and radiator areas clean to support proper airflow and cooling.
• Test PowerCommand controls, alarms, and automatic start functions regularly to confirm system readiness.
• Review diagnostic alerts and operating data to identify maintenance needs before performance issues occur.
• Schedule professional preventive servicing to maintain long-term reliability for commercial and whole-building backup power applications.