GUARDIAN® is now doing to the commercial market
what it has already done to the residential market… making standby power reliable, yet
affordable. Protect your revenue stream by investing in a GUARDIAN Elite™ commercial
automatic standby generator. Our GUARDIAN Elite generators are ideal for a broad range of
enterprises, including restaurants, convenience stores, supermarkets, banks, fitness centers,
hotels, and retail outlets.
Three-phase models range from 20-150 kW and single-phase models from 60-150 kW. They run
on either natural gas or LPV, feature automotive style, liquid-cooled engines, GUARDIAN’s
exclusive Whisper-Test™ feature and a corrosion-resistant aluminum enclosure option.
Whisper Quiet Operation
GUARDIAN’s exclusive patent-pending Whisper-Test low speed exercise feature makes our
GUARDIAN Elite products the quietest liquid-cooled generators on the market. Whisper-Test
reduces noise by 50% during the generator’s weekly self-test cycle allowing for near silent
operation that satisfies all known sound ordinances.
Value Priced
During a utility outage, a GUARDIAN Elite will protect your revenue stream and prevent
expensive losses by keeping your business… in business. Not only are our products engineered
for reliability and long life, our volume production and short lead times make GUARDIAN Elite
products an even better value.
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


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Liquid-Cooled Engine: Produces more electricity for longer outages
Whisper-Test™: Patent-pending, self-test feature makes the GUARDIAN Elite 50%
quieter during the generator’s weekly self-test cycle
Aluminum Enclosure: Corrosion-resistance for coastal communities (60 kW and
higher)
Longest Life Expectancy in the Industry: Over 3,000 hours of run time
Superior Paint: Tough, textured powder coat paint finish for unmatched durability and all
weather protection
UL Listed: For safety and certified power ratings
Clean Burning Fuel: Natural gas or LPV
Generator Set
20-45 kW
60-80 kW
Model Number
100-150 kW
QT02016
QT02516
QT03524
QT04524
Rated Power LP (kW)
20
25
35
45
Rated Power NG (kW)
20
25
35
43
Amps @ 208V, 3Ø
70
87
122
156
Amps @ 480V, 3Ø
n/a
n/a
53
68
120/208
120/208
120/208, 277/480
120/208, 277/480
Phase
Three
Three
Three
Three
Frequency
60 Hz
60 Hz
60 Hz
60 Hz
3600/3600
3600/3600
3600/3600
3600/3600
1.6L OHC 4 cyl.
1.6L OHC 4 cyl.
2.4L OHC 4 cyl.
2.4L OHC 4 cyl.
125 (3.44)
175 (4.81)
222.3 (6.1)
286 (7.86)
Voltage @ 60 Hz
Engine/Alternator RPM
Engine
Fuel Consumption LP
(cu.ft./hr.)/(gal./hr.)
Fuel Consumption NG (cu.ft./hr.)
315
437
560
720
EPA/CARB Certified
Yes
Yes
No
No
Natural Gas
Natural Gas
Natural Gas
Natural Gas
LP Vapor
LP Vapor
LP Vapor
LP Vapor
Liquid
Liquid
Liquid
Liquid
R-Series
R-Series
R-Series
R-Series
Yes
Yes
Yes
Yes
72
73
71
72
62
63
57
58
80 Amp
100 Amp
150, 60 Amp
175, 80 Amp
Yes
Yes
Yes
Yes
71 x 29.5 x 36
71 x 29.5 x 36
77 x 33.5 x 45
77 x 33.5 x 45
784/694
794/704
1393/1276
1414/1297
Fuel
Engine Cooling
Controls
UL 2200 (US and Canada)
Sound Output dB(A) at 23 ft. with
generator operating at full load
Sound Output dB(A) at 23 ft. with
generator in WhisperTest™ low speed
exercise mode
Main Line Circuit Breaker
Aluminum Enclosure Option
Dimensions (L" x W" x H")
Unit Wt. (lbs.) (steel/aluminum)
Controls and Transfer Switch
R-Series Digital
Controller
H-100 Digital Controller
Transfer Switch
7 LED Indicator Lights
Standard
High Temperature Shutdown
Standard
Low Coolant Level Shutdown
Standard
Automatic Voltage Regulator with Over-voltage Protection
Standard

Voltage Regulation (at steady state from no load to
± 1.0 %
100% load

Frequency Regulation (at steady state from no load to
± 0.5%
100% load)
Engine Start Sequence
Safety Fuse
Starter Lockout
Cyclic Cranking: Initially 15 sec. on, then 7 sec. rest, 7
sec. on. 90 sec. maximum duration
Standard
Starter cannot re-engage until 5 sec. after engine has
stopped
2 Amp Battery Charger
Standard
Engine Warm-up
10-15 seconds
Engine Cool-down
1 minute
Mode Switch

Auto Position
Utility Failure / 7 day exerciser

Off Position
Stops unit. Power is removed. Control and charger
still operate.

Manual/Test Position
Start with starter control, unit stays on. If utility fails,
transfer to load takes place
Automatic Weekly Exerciser with Selectable Low Speed Exercise Standard