Model C125D6D | 120/208V 3-Phase | Level 1 Sound Enclosure | 24-Hour Subbase Fuel Tank
Expected Arrival: February 5, 2026
Built for Commercial Reliability
The Cummins C125D6D is a fully integrated 125kW diesel generator system engineered specifically for commercial standby power applications. This turnkey solution combines Cummins' renowned reliability with advanced features to keep your business running during power outages.
DESCRIPTION:
What's Included
This generator comes ready to install with a premium green aluminum sound enclosure and integrated 24-hour fuel tank. The Level 1 sound attenuation keeps noise levels low, while the enclosure is rated for 180 mph wind loads per ASCE 7-10 standards—built to withstand extreme weather conditions.
Powerful Performance
At the heart of this system is a rugged 6.7-liter inline 6-cylinder Cummins diesel engine. This heavy-duty, liquid-cooled powerplant features a cast iron engine block and operates at 1800 RPM for exceptionally quiet performance and long-lasting durability. Designed for demanding commercial environments, the 4-cycle industrial engine delivers reliable power with low emissions and responds quickly to changing electrical loads.
Superior Electrical Output
The generator's brushless alternator provides outstanding motor starting capability thanks to its low reactance 2/3 pitch windings. You'll experience minimal waveform distortion even with nonlinear loads, plus robust fault-clearing short-circuit capability for added protection.
Intelligent Control System
The standard PowerCommand 1.1 electronic control system gives you complete command over your generator. This sophisticated controller handles automatic remote starting and stopping, maintains precise frequency and voltage regulation, and displays detailed alarm and status messages. Output metering keeps you informed of performance, while automatic shutdown protects your investment if faults are detected. The system meets NFPA 110 Level 1 compliance requirements right out of the box.
Safety-First Fuel Storage
The included 24-hour subbase fuel tank features dual-wall construction and carries both UL 142 and ULC-S601 listings for your peace of mind and regulatory compliance.
Certifications & Compliance
This generator meets rigorous industry standards including U.S. EPA Tier 3 emissions requirements, UL 2200 safety certification, NFPA 110 Type 10 designation, and Type 1 capability. Additional certifications include ISO 1001 and International Building Code (IBC) 2012 compliance.
Warranty Protection
Your investment is protected by a comprehensive 2-year or 1,000-hour standby warranty, whichever comes first. Extended warranty options are available—contact us for details.
Specifications at a Glance
- Power Output: 125kW at 120/208V 3-Phase
- Model: C125D6D
- Fuel: Diesel
- Fuel Tank Capacity: 134 gallons (24-hour runtime)
- Enclosure: Level 1 Sound Attenuated
- Control System: PowerCommand 1.1
- Remote Monitoring: Available with optional accessory equipment
- Automatic Transfer Switch: Not included. See Cummins OTEC Series Switches
- Weight (with fuel tank): 5,112 lbs
- Dimensions (with fuel tank): 180"L x 40"W x 93"H
- Certifications: EPA Tier 3, UL 2200, NFPA 110 Type 10, ISO 1001, IBC Seismic 2012
DOWNLOADS:
Need help sizing your generator or selecting a transfer switch? Contact Buckeye Power Systems—our experts are ready to assist with your commercial power needs.