Generac RG04845KNAX 48kW Standby Generator
During high-voltage industrial facility grid outages, the Generac RG04845 Standby Generator excels, providing 48kW of 480V 3-phase electricity from a low-speed 1800 RPM 4.5L engine for critical manufacturing transformers.
- 48kW 480V output powers plant equipment
- 3-phase configuration feeds industrial transformer gear
- 4.5L liquid-cooled engine maintains thermal stability
- Low 1800 RPM reduces sound signature
- Galvanneal steel enclosure stops surface corrosion
Description
During severe storm blackouts at commercial institutions, the Generac RG04845KNAX Standby Generator supplies 48kW continuous 277V and 480V three-phase power for industrial food plants and medical kitchens. Powered by a 4.5L liquid-cooled engine operating at 1800 RPM, it runs primary step-down transformers. It prevents catastrophic inventory loss during prolonged municipal utility grid failures without requiring manual mid-storm refueling.
Heavy-gauge RhinoCoat aluminum enclosure panels deaden operating noise while providing total resistance to moisture and salt air corrosion. The 4.5L industrial engine features an overhead valve configuration, automotive-style water pump, and full-flow spin-on oil filter. Total unladen weight measures 1960 lbs within external enclosure bounds of 82.2 inches long by 35 inches wide by 46.1 inches high. This Generac 480V commercial power plant links straight into municipal natural gas lines or on-site liquid propane tanks.
Key Features of Generac RG04845KNAX
Industrial facility directors buy Generac RG04845KNAX commercial power equipment to energize high-voltage 480V three-phase chillers and air handling units without secondary transformers. Low-speed operation maximizes prime power reliability during multi-day utility disruptions.
- 48kW three-phase output powers high-voltage commercial HVAC units and refrigeration chillers without loss.
- 277/480V wye configuration matches industrial motor control centers and distribution boards.
- 4.5L liquid-cooled engine delivers continuous high mechanical torque during intensive commercial workloads.
- 1800 RPM low-speed operation reduces mechanical stress and acoustic emissions.
- True Power technology limits total harmonic distortion under 5 percent to safeguard microchip controls.
- RhinoCoat aluminum cabinet withstands coastal salt air and severe outdoor weather.
- Digital Evolution controller tracks system frequency, line voltage, and battery health on this RG04845KNAX generator plant.
High Voltage Three Phase Inrush Performance
Equipped with an industrial copper-wound alternator, this RG04845KNAX generator plant sustains balanced 277V and 480V power under high inductive draws. Noise levels register at 72 dB(A) at 23 feet under full continuous load. The automatic voltage regulator responds within milliseconds to large motor startups, holding line drop to minimal levels so that walk-in cooler compressors and exhaust fans start without tripping secondary branch breakers.
Industrial Pad Clearances Transfer Setup
Install the generator outside on an engineered concrete slab maintaining at least 18 inches of clearance from non-combustible walls and 5 feet from doors, windows, and ventilation louvers. Connect fuel piping through an approved flexible connector and manual shutoff valve. Wire the high-voltage lines into a 480V automatic transfer switch using certified copper conductors.
Automated Controller Usability Servicing Steps
The Evolution digital controller automates weekly self-tests without human intervention, eliminating physical starting strain. This stationary emergency generator is NOT engineered for mobile vehicle mounting, enclosed indoor basements, or running on standard pump gasoline.
- Check coolant level and engine lubrication reserve every 24 hours of active operation.
- Drain crankcase oil and replace the spin-on oil filter every 100 runtime hours.
- Inspect cooling fan belts and radiator core fins every 250 runtime hours.
Equipment Warranty Pallet Package Manifest
This Generac 480V commercial power plant carries a 5-Year limited warranty covering electrical modules and mechanical parts. The heavy wooden shipping pallet holds the generator unit, flexible fuel connection line, installation base hardware, and complete technical documentation.
Generac Protector 48kW 277/480V 3-Phase QS Standby Generator Specs
| Brand | Generac Power Systems |
| Full Model Code | Protector Gaseous Series XG04845CNAX (Configured for High Voltage 3-Phase) |
| Generator Type | Stationary Liquid-Cooled Commercial Standby Generator |
| Fuel Type | Multi-Fuel Vapor System (Liquid Propane LPG or Natural Gas NG, Controller-Selectable) |
| Running Watts (Continuous) | Liquid Propane: 48,000 Watts | Natural Gas: 48,000 Watts |
| AC Voltage & Frequency | 277V / 480V AC @ 60 Hz |
| Amperage Output (Continuous) | 72 Amps @ 277V/480V 3-Phase (0.8 Power Factor Core) |
| Phase Configuration | 3-Phase (*Note: Standard factory output is 3-phase; 480V configurations are not built in single-phase) |
| Engine Type & Displacement | Generac 4.5L Inline 4-Cylinder, Naturally Aspirated Industrial Engine |
| Engine Operational Speed | Static 1,800 RPM (Low Speed, QuietSource Built) |
| Cooling System Infrastructure | Liquid-Cooled Closed Loop Industrial Radiator Module |
| Governor & Electrical Regulation | Isochronous Electronic Governor Control with Digital Voltage Regulation (±1%) |
| Fuel Consumption (50% Load) | Liquid Propane: 4.2 GPH (15.9 L/hr) | Natural Gas: 336 CFH (9.5 m³/hr) |
| Fuel Consumption (100% Load) | Liquid Propane: 6.6 GPH (25.0 L/hr) | Natural Gas: 604 CFH (17.1 m³/hr) |
| System Controller Module | Power Zone® 410 Digital Controller (NFPA 110 Capable) |
| Wireless Interface Ecosystem | Mobile Link™ and Fleet Cellular Connectivity |
| Noise Level (dBA) | Normal Operation: 68 dBA | Quiet-Test™ Low-RPM Exercise Mode: 60 dBA @ 7 meters |
| Enclosure Structural Build | All-Weather Sound-Attenuated Aluminum Enclosure with RhinoCoat™ Finish |
| Net Weight | 745.7 kg (1,644 lbs) Base Dry Weight |
| Dimensions L x W x H | 2118 mm x 889 mm x 1168 mm (83.4" x 35" x 46") |
| Certifications | UL 2200 Listed, EPA Stationary Emergency Certified, 145 mph Wind Rating |
| Ideal Application | Tailored for heavy modern commercial setups, cold storage vaults, warehouses, and medical clinics executing higher infrastructure 480V distribution networks. |















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