{"product_id":"cummins-rs125-quiet-connect-125kw-standby-generator-3-phase","title":"Cummins RS125 Quiet Connect™ Series 125kW Standby Power Generator (120\/240V 3-Phase) - Dual Fuel Liquid-Cooled","description":"\u003ch2\u003eIs the Cummins RS125 Quiet Connect™ the Right 125kW Standby Generator for Your Facility?\u003c\/h2\u003e\n\u003cp\u003eYou've watched the lights flicker during a storm and felt that familiar knot in your stomach. Maybe you've already lived through a multi-day outage where your commercial operation ground to a halt, inventory spoiled, or critical systems went dark. The cost wasn't just financial. It was the sleepless nights, the frantic phone calls, and the realization that your entire operation depends on a utility grid you can't control.\u003c\/p\u003e\n\u003cp\u003eWithout reliable standby power, every storm season becomes a gamble. Every grid failure threatens your equipment, your livelihood, and your reputation with clients who expect uninterrupted service. Smaller generators can't handle the load. Cheap units fail when you need them most. And buying from unauthorized sellers? That's how warranties get voided and support calls go unanswered.\u003c\/p\u003e\n\u003cp\u003eThe Cummins RS125 Quiet Connect™ Series 125kW Standby Power Generator solves this problem with industrial-grade reliability engineered for exactly these moments. This liquid-cooled, dual fuel powerhouse delivers true 3-phase 120\/240V output with the kind of voltage regulation (±1%) that protects sensitive equipment while keeping your entire facility running.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e125kW of continuous standby power\u003c\/strong\u003e keeps commercial facilities, large properties, and critical systems fully operational during extended outages\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDual fuel flexibility (natural gas or LP propane)\u003c\/strong\u003e lets you choose your fuel source based on availability and cost, with simple field-selectable switching\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e75 dBA Sound Level 1 enclosure\u003c\/strong\u003e means neighbors won't complain and you won't sacrifice peace for protection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStarts reliably at -40°F\u003c\/strong\u003e with factory-installed coolant heater, so extreme cold never leaves you stranded\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e180 MPH wind load rating\u003c\/strong\u003e meets ASCE 7-10 standards for hurricane and severe weather zones\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePowerCommand 2.3 controls\u003c\/strong\u003e provide self-diagnostics, automatic fault shutdown, and precise monitoring from a single interface\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch2\u003eRS125 Quiet Connect Features \u0026amp; Performance\u003c\/h2\u003e\n\u003ch3\u003eHeavy-Duty 8.9L Turbocharged Engine\u003c\/h3\u003e\n\u003cp\u003eAt the heart of this Cummins 125kW 3-phase generator sits an 8.9-liter turbocharged, aftercooled inline 6-cylinder engine. Running at 1800 RPM, it delivers exceptional fuel efficiency while minimizing wear. This isn't a modified automotive engine. It's purpose-built for standby duty with the kind of longevity commercial operators demand.\u003c\/p\u003e\n\n\u003ch3\u003eBrushless Alternator with Precision Regulation\u003c\/h3\u003e\n\u003cp\u003eThe CA series brushless alternator paired with AmpSentry protection delivers ±1% voltage regulation and ±0.25% frequency regulation. For facilities running servers, medical equipment, or sensitive electronics, this level of stability means your loads receive utility-quality power even during generator operation.\u003c\/p\u003e\n\n\u003ch3\u003eQuiet Operation That Won't Disturb the Neighborhood\u003c\/h3\u003e\n\u003cp\u003eThe powder-coated aluminum enclosure achieves Sound Level 1 ratings at approximately 75 dB(A) measured at 7 meters. Compare that to typical liquid-cooled generators in this class, and you'll understand why the Quiet Connect name isn't just marketing. It's measurable performance that keeps residential neighbors and commercial tenants satisfied.\u003c\/p\u003e\n\n\u003ch3\u003eBuilt for Extreme Conditions\u003c\/h3\u003e\n\u003cp\u003eUL 2200 listed, IBC seismic capable, and NFPA 110 ready, the RS125 meets the codes that matter for permitted installations. The 180 MPH wind rating and corrosion-resistant enclosure mean this generator performs in coastal environments, hurricane zones, and harsh industrial settings where lesser units fail.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eSee full specifications below for complete technical details and box contents.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eIdeal Use Cases for the Cummins RS125 125kW Generator\u003c\/h2\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eCommercial facilities and retail operations:\u003c\/strong\u003e Keep refrigeration, HVAC, security systems, and point-of-sale equipment running during grid failures. A single extended outage can cost more in lost inventory and revenue than proper backup power.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLarge residential estates and mixed-use properties:\u003c\/strong\u003e Properties requiring 3-phase 120\/240V service need more than a portable generator. The RS125 delivers whole-property coverage with the quiet operation appropriate for residential settings.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall data centers and telecom installations:\u003c\/strong\u003e Mission-critical uptime requires precise voltage regulation and automatic transfer capability. PowerCommand 2.3 controls integrate seamlessly with building management systems.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMedical facilities and assisted living:\u003c\/strong\u003e When lives depend on powered equipment, NFPA 110 compliance isn't optional. The RS125's self-diagnostic controls and automatic fault protection provide the reliability healthcare demands.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAgricultural operations:\u003c\/strong\u003e Climate-controlled storage, irrigation pumps, and processing equipment require serious standby capacity. Dual fuel operation means you can run on existing propane infrastructure or natural gas lines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNot sure if the RS125 is the right fit for your application? Check our FAQs below or contact our power specialists for a personalized recommendation.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eWhy Choose the Cummins Quiet Connect RS125 over Smaller Standby Units?\u003c\/h2\u003e\n\u003cp\u003eSmaller residential standby generators might seem adequate on paper, but they can't deliver true 3-phase power or handle the sustained loads commercial operations demand. When you're protecting a facility worth protecting, undersized equipment creates false confidence that fails exactly when stakes are highest.\u003c\/p\u003e\n\u003cp\u003eThe RS125 offers capabilities that separate professional-grade standby power from consumer alternatives:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eTrue 125kW continuous capacity versus derated \"peak\" ratings on smaller units\u003c\/li\u003e\n\u003cli\u003eLiquid cooling for sustained operation versus air-cooled designs that overheat under load\u003c\/li\u003e\n\u003cli\u003ePowerCommand 2.3 advanced controls versus basic start\/stop functionality\u003c\/li\u003e\n\u003cli\u003eField-selectable dual fuel versus single-fuel limitations\u003c\/li\u003e\n\u003cli\u003e2-year comprehensive warranty backed by Cummins global support network\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eCummins has manufactured power generation equipment for over a century. That reputation isn't built on marketing. It's earned through millions of operating hours in the most demanding environments on earth. When you specify Cummins, you're choosing equipment that professional installers trust and service networks support.\u003c\/p\u003e\n\n\u003ch2\u003eCummins RS125 Specifications\u003c\/h2\u003e\n\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eSpec\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eValue\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003eRS125 Quiet Connect Series (C125N6)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eStandby Power Rating\u003c\/td\u003e\n\u003ctd\u003e125kW\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Configuration\u003c\/td\u003e\n\u003ctd\u003e120\/240V 3-Phase (also available: 120\/208V, 277\/480V)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFuel Type\u003c\/td\u003e\n\u003ctd\u003eNatural Gas \/ LP Propane (Dual Fuel, Field-Selectable)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNG Fuel Consumption (Full Load)\u003c\/td\u003e\n\u003ctd\u003e674.1 ft³\/hr (19.09 m³\/hr)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eNG Fuel Pressure Required\u003c\/td\u003e\n\u003ctd\u003e6.0-13.0 in H2O (1.5-3.5 kPa)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine\u003c\/td\u003e\n\u003ctd\u003e8.9L Turbocharged, Aftercooled Inline 6-Cylinder\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEngine Speed\u003c\/td\u003e\n\u003ctd\u003e1800 RPM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCooling System\u003c\/td\u003e\n\u003ctd\u003eLiquid-Cooled\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAlternator\u003c\/td\u003e\n\u003ctd\u003eBrushless CA Series\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eVoltage Regulation\u003c\/td\u003e\n\u003ctd\u003e±1%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eFrequency Regulation\u003c\/td\u003e\n\u003ctd\u003e±0.25%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eController\u003c\/td\u003e\n\u003ctd\u003ePowerCommand 2.3 with Self-Diagnostics\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSound Level\u003c\/td\u003e\n\u003ctd\u003e75 dB(A) @ 7m (Sound Level 1)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Material\u003c\/td\u003e\n\u003ctd\u003ePowder-Coated Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWind Load Rating\u003c\/td\u003e\n\u003ctd\u003e180 MPH (ASCE 7-10)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCold Start Capability\u003c\/td\u003e\n\u003ctd\u003e-40°F (-40°C)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eDimensions (L x W x H)\u003c\/td\u003e\n\u003ctd\u003e143\" x 40\" x 72\" (363 x 102 x 183 cm)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWeight\u003c\/td\u003e\n\u003ctd\u003e3,915 lbs (1,776 kg)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCertifications\u003c\/td\u003e\n\u003ctd\u003eUL 2200 Listed, EPA Compliant, IBC Seismic Capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eCode Compliance\u003c\/td\u003e\n\u003ctd\u003eNFPA 110 Capable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eExercise Mode\u003c\/td\u003e\n\u003ctd\u003eProgrammable (as short as 2 minutes every 6 months)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eWarranty\u003c\/td\u003e\n\u003ctd\u003e2-Year Comprehensive\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\u003ch3\u003eWhat's in the Box\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eCummins RS125 Quiet Connect Generator Unit with Sound Level 1 Enclosure\u003c\/li\u003e\n\u003cli\u003ePowerCommand 2.3 Digital Controller (Factory Installed)\u003c\/li\u003e\n\u003cli\u003eFactory-Installed Coolant Heater\u003c\/li\u003e\n\u003cli\u003eIntegrated Exhaust Muffler\u003c\/li\u003e\n\u003cli\u003eOwner's Manual and Installation Documentation\u003c\/li\u003e\n\u003cli\u003eWarranty Registration Materials\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cem\u003eNote: Transfer switch sold separately. Professional installation required for code compliance and warranty coverage.\u003c\/em\u003e\u003c\/p\u003e\n\n\u003ch2\u003eFrequently Asked Questions About the RS125 Quiet Connect\u003c\/h2\u003e\n\u003ch3\u003eHow loud is the Cummins RS125 during operation?\u003c\/h3\u003e\n\u003cp\u003eThe RS125 operates at approximately 75 dB(A) measured at 7 meters, which is comparable to normal conversation volume. The Sound Level 1 aluminum enclosure with integrated muffler makes this one of the quietest liquid-cooled standby generators in its class, suitable for residential neighborhoods and noise-sensitive commercial areas.\u003c\/p\u003e\n\n\u003ch3\u003eCan I switch between natural gas and propane?\u003c\/h3\u003e\n\u003cp\u003eYes. The RS125 features field-selectable dual fuel capability, allowing your installer to configure the unit for natural gas or LP propane based on your available fuel infrastructure. This flexibility protects your investment if fuel availability changes in the future.\u003c\/p\u003e\n\n\u003ch3\u003eDoes this generator start reliably in extreme cold?\u003c\/h3\u003e\n\u003cp\u003eThe factory-installed coolant heater enables reliable starting at temperatures as low as -40°F. This makes the RS125 suitable for northern climates and mountain installations where winter temperatures regularly drop below zero.\u003c\/p\u003e\n\n\u003ch3\u003eIs the RS125 worth the investment for my facility?\u003c\/h3\u003e\n\u003cp\u003eFor facilities requiring true 3-phase 125kW standby capacity, the RS125 delivers commercial-grade reliability with a 2-year warranty and the backing of Cummins global service network. The liquid-cooled design, precision voltage regulation, and code-compliant construction provide decades of service life with proper maintenance. Consider the cost of a single extended outage against the protection this unit provides.\u003c\/p\u003e\n\n\u003ch2\u003eWarranty \u0026amp; Authorized Cummins Dealer Support\u003c\/h2\u003e\n\u003cp\u003eThe Cummins RS125 Quiet Connect includes a comprehensive 2-year manufacturer warranty covering defects in materials and workmanship. As an authorized Cummins dealer, Mighty Generators provides genuine products with full factory warranty support, proper documentation, and access to the Cummins service network.\u003c\/p\u003e\n\u003cp\u003eBuying from unauthorized sellers risks voided warranties, gray market units, and zero support when problems arise. Don't gamble with equipment this critical.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eOrder your Cummins RS125 Quiet Connect from Mighty Generators for full warranty coverage, expert support, and fast shipping.\u003c\/strong\u003e We stock genuine Cummins equipment and stand behind every unit we sell.\u003c\/p\u003e\n\u003cp\u003eQuestions about the RS125, sizing for your application, or installation requirements? Our power specialists are here to help. Contact us before or after your purchase for guidance you can trust.\u003c\/p\u003e","brand":"Cummins","offers":[{"title":"120\/208 \/ 3Ph","offer_id":50842184909074,"sku":"A063A442","price":44990.78,"currency_code":"USD","in_stock":true},{"title":"120\/240 \/ 3Ph","offer_id":50842184941842,"sku":"A063A453","price":44990.78,"currency_code":"USD","in_stock":true},{"title":"120\/240 \/ 1Ph","offer_id":50842184974610,"sku":"A063B604","price":46308.07,"currency_code":"USD","in_stock":true},{"title":"277\/480 \/ 3Ph","offer_id":50842185007378,"sku":"A063A449","price":44990.78,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0751\/3885\/9282\/files\/QuietConnectLiquidCooled_25kw-60kw_RS25Front_61a34a26-2c06-422a-a7f2-941a53ba99f8.jpg?v=1774390649","url":"https:\/\/mightygenerators.com\/products\/cummins-rs125-quiet-connect-125kw-standby-generator-3-phase","provider":"Mighty Generators","version":"1.0","type":"link"}