Cummins RS150 150kW QuietConnect Standby Generator — 120/240V 1-Phase — A063B605
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At a glance
- Standby Rating
- 150 kW (188 kVA)
- Voltage/Phase
- 120/240V, Single-Phase, 60 Hz
- Fuel
- Natural Gas / Propane (dual fuel, field-selectable)
- Engine
- Cummins QSJ8.9G, cast-iron in-line 6-cylinder, turbocharged & aftercooled, 240 bhp @ 1800 rpm
- Cooling
- Liquid-cooled (set-mounted radiator, 45°C / 113°F ambient design)
- Weight
- 3,915 lb (1,776 kg)
- Warranty
- 2-year limited (per authorized dealers)
Why this generator
- 150 kW (188 kVA) of liquid-cooled standby power keeps large homes and light-commercial sites running through extended outages
- Dual-fuel design runs on either natural gas or propane, selectable in the field at installation for flexible fuel sourcing
- Powered by the robust Cummins QSJ8.9G cast-iron, turbocharged and aftercooled in-line 6-cylinder engine rated 240 bhp
- 1800 RPM operation delivers clean, EPA-compliant 60 Hz power at 120/240V single-phase
- Liquid-cooled radiator system rated for ambient temperatures up to 113°F (45°C) for reliable performance in demanding conditions
Everything you need to know
The Cummins C150N6 is a 150 kW natural gas or LP standby generator from the Cummins QuietConnect commercial-grade series — a liquid-cooled machine built to carry commercial buildings, agricultural and industrial sites, and multi-building properties 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 C150N6 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 C150N6 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 commercial and industrial use.
Natural Gas or Propane — Continuous Runtime
Connected to a utility natural-gas line, the C150N6 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 C150N6 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.
- 150 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 commercial and industrial use
- Model C150N6
Frequently asked questions
What fuel does the A063B605 run on?+
The A063B605 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.