Cummins RS50 50kW QuietConnect Standby Generator — 120/240V 1-Phase — A054F630
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At a glance
- Standby Power
- 50 kW (Natural Gas / LP)
- Voltage / Phase
- 120/240V, Single-Phase
- Fuel
- Natural Gas or LP (Propane)
- Engine
- Cummins QSJ5.9G-G1, 5.9L inline-6, 84.7 HP @ 1800 RPM
- Cooling
- Liquid-cooled
- Sound Level
- 69 dBA
- Dimensions (W x L x H)
- 40 in W x 119 in L x 52 in H
- Weight
- 3,077 lbs
- Control
- PowerCommand HMI211 digital control panel
- Enclosure
- Level 1 sound-attenuated aluminum, 180 mph wind rating
- Transfer Switch
- Sold separately (not included)
- Warranty
- 2-year / 1,000-hour limited warranty
Why this generator
- Delivers 50 kW of liquid-cooled standby power on natural gas or LP, enough to back up a large whole home with single-phase 120/240V service
- Powered by the proven Cummins QSJ5.9G 5.9L inline-6 engine producing 84.7 HP at 1800 RPM for durable, EPA-certified performance
- One of the quietest in its class at just 69 dBA, thanks to a Level 1 sound-attenuated enclosure
- Rugged aluminum enclosure with powder-coat finish is rated for 180 mph winds and built for extreme heat, cold, and corrosion resistance
- PowerCommand HMI211 digital control panel provides industry-leading self-diagnostics and a flexible exercise mode
- UL 2200 listed and certified to the latest EPA, UL, and IBC Seismic standards; meets NFPA 110 with required accessories
Everything you need to know
The Cummins C50N6 is a 50 kW natural gas or LP standby generator from the Cummins QuietConnect commercial-grade series — a liquid-cooled machine built to carry estates, agricultural operations, and light-commercial facilities through extended utility outages. Permanently connected to your natural gas or propane supply, it runs as long as fuel flows, with no refueling and no tanks to monitor.
Automatic, Hands-Off Backup
Paired with a Cummins automatic transfer switch, the C50N6 monitors utility power continuously, starts within seconds of an outage, and transfers the full load automatically — then returns to utility power and shuts down once the grid is restored. No manual switching, no cords, and no downtime for the systems that can't go dark.
Commercial-Grade Power & Control
Cummins PowerCommand control governs the C50N6 with precise voltage and frequency regulation and strong motor-starting capability — critical for hard-starting loads like central air conditioning, well and irrigation pumps, refrigeration, and three-phase equipment. It's the same power pedigree Cummins builds for hospitals, data centers, and critical facilities, scaled for estate and light-commercial use.
Natural Gas or Propane — Continuous Runtime
Connected to a utility natural-gas line, the C50N6 runs continuously through even multi-day outages with no refueling. On LP it draws from your on-site propane tank. Either way you get clean, continuous power without the fuel logistics of diesel, ideal anywhere a gas line is available.
Factory-Authorized, Quote-Based Pricing
Total Generator Pros is a factory-authorized Cummins dealer. Because every large-format standby installation is engineered to the site, pricing on the C50N6 is quote-based. Request a free quote and we'll spec the unit, transfer switch, and installation for your project — with free nationwide shipping, turnkey installation across North & South Carolina, and 0% APR financing available on qualifying orders.
- 50 kW standby power
- Cummins QuietConnect series, liquid-cooled
- Natural gas or LP (propane) fuel
- Cummins PowerCommand digital control
- Automatic whole-building transfer with a Cummins ATS
- Commercial-grade, engineered for estate and light-commercial use
- Model C50N6
Frequently asked questions
What fuel does the A054F630 run on?+
The A054F630 runs on natural gas or LP (propane), selectable at install.
Does the price include installation?+
No — the online price covers the unit shipped free to the lower 48. Professional installation is available in NC & SC on a quote basis; outside that area we'll help you find a qualified local installer.
How fast does it ship?+
Free curbside / liftgate shipping to the contiguous 48 states. Made-to-order units typically ship in 12 weeks or less.
What warranty is included?+
5-year limited factory warranty, registered and supported directly through Cummins.
Is financing available?+
Yes — 0% APR financing is available on qualifying orders. Ask us for details before checkout.
Free curbside shipping
Liftgate delivery to the lower 48. Ships in 12 weeks or less (made-to-order commercial unit).
Install help, no upsell
We size, spec, and connect you with a vetted local installer — or talk your contractor through it for free.
Real Cummins warranty
Full 5-year limited warranty — registered and supported through Cummins directly.