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Generac Protector 48kW Liquid-Cooled Standby Generator, 120/240VAC, Single-Phase

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SKU
RG04845ANAX

The Generac Protector RG04845ANAX is an automatic 48 kW standby generator with 120/240 VAC, single-phase, 60 Hz output and a listed 200 A rating. It uses a liquid-cooled 4.5 L inline four-cylinder engine and is specified for natural gas or propane vapor, with fuel type selected through the controller; its weather-protective enclosure is corrosion-resistant aluminum.

  • 48 kW Running Output
  • 120/240 VAC, 200 A Output
  • Natural Gas or Propane Vapor
  • Automatic Standby Operation
  • Liquid-Cooled 4.5 L Engine
  • Corrosion-Resistant Aluminum Enclosure

Product Overview

The Generac Protector RG04845ANAX is an automatic 48 kW standby generator with 120/240 VAC, single-phase, 60 Hz output and a listed 200 A rating. It uses a liquid-cooled 4.5 L inline four-cylinder engine and is specified for natural gas or propane vapor, with fuel type selected through the controller; its weather-protective enclosure is corrosion-resistant aluminum.

Technical Specifications

Product information and specifications for the selected item.

SKU: RG04845ANAX

Product Information

BrandGenerac
MPNRG04845ANAX
SKURG04845ANAX
UPC / GTIN696471078114
CategoryCommercial Standby Generators

Key Specs

Running Wattage48000 W
Amperage (A)200
Output Voltage120/240 VAC
Electrical Phases1
Fuel TypeDual-Fuel (LP/NG)
LP Power Capacity48000

Generator Output

Running Wattage48000 W
Amperage (A)200
Output Voltage120/240 VAC
Electrical Phases1
Temperature derating1.7% per 10 °F above 77 °F (1.5% per 5 °C above 25 °C)
Digital voltage regulation±1 %
Total harmonic distortion<5 %
Altitude derating3% per 1,000 ft above 600 ft (1% per 100 m above 183 m)
24-hour average output limitAverage output must not exceed 70% of the ESP rating

Fuel Capacity

Fuel TypeDual-Fuel (LP/NG)
LP Power Capacity48000
NG Power Capacity48000
Fuel type configurationController-selected only
LP vapor pressure7-14 (1.74-3.48) in H2O (kPa)
Natural gas consumption at 100% rated load607 (17.2) cfh (m³/h)
Natural gas pressure3.5-14 (0.87-3.48) in H2O (kPa)
LP consumption at 100% rated load6.6 (25.0) US gph (L/h)

Engine & Cooling

Engine BrandGenerac
Cooling TypeLiquid Cooled
RPM1800 rpm
Coolant system capacity2.9 (11) US gal (L)
Compression ratio9.9:1
Coolant composition50/50 (50% ethylene glycol)
Engine configuration4.5 L inline 4-cylinder, naturally aspirated

Features & Connections

Generator FeaturesAutomatic Voltage Regulation, Low Oil Alert/Shutdown
FeaturesEPA Compliant, Made in America
Approved for Commercial UseYes
UL listingUL 2200 listed
Wind speed rating115 (185); requires a correctly prepared concrete pad and anchoring system mph (km/h)
Structure clearance under SwRI listingAs close as 18 (457) to a structure; keep away from doors, windows, and fresh-air intakes and follow local codes in (mm)
Enclosure finish and colorElectrostatically applied textured epoxy paint; bisque
Emissions certificationEPA emissions certified
Sound level at exercise speed68 at 23 ft (7 m), exercise speed dB(A)
Fuel line connection1-1/4 NPT female tee through baseframe opening
Sound level at normal load70 at 23 ft (7 m), normal load dB(A)
Enclosure materialCorrosion-resistant aluminum enclosure

Dimensions & Weight

Height (in.)46
Width (in.)35
Length (in.)83.4
Weight (lb.)1781
Recommended minimum concrete pad dimensions47 wide × 95.4 long; based on a 6-in offset

Product Documents

  • SwRI Document of Compliance for Stationary Engine Generator Assemblies (Document No. 13204-01-01) Certification compliance Open / download file
  • Generac Power Systems 5 Year (5M) Limited Warranty for Residential and Commercial Standby Generators Warranty Open / download file
  • Owner’s Manual for Spark-Ignited Stationary Generators — Residential and Commercial (48/60/80 kW, 4.5 L) Manual Open / download file
  • Installation Guidelines — Spark-Ignited Stationary Generators, Protector Series 48/60/80 kW Installation manual Open / download file
  • Generac RG04845ANAX Specification Sheet Spec sheet Open / download file
  • Protector® Series Standby Generators — Liquid-Cooled Gaseous Engine Application & Engineering Data (48/60/80 kW) Spec sheet Open / download file
  • RG Protector® Series Standby Generators — Liquid-Cooled Gaseous Engine Spec Sheet (48/60/80 kW) Spec sheet Open / download file

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