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CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)
Model:
502-3700
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Factory-Direct
Features
Grade
Semi-Pro
Style
Portable
Run Watts
12,000 Rated Watts
Surge Watts
15,000
Starting Watts
Fuel
Gasoline
Engine
Caterpillar
- Cat® RP 1200 E Semi-Pro Portable Generator (CARB)
- Ideal for emergency home back-up, DIY enthusiasts and contractors
- Electric Start (Battery Included)
- Allows for easy starting with the push of a button
- Includes Smart battery charger
- 670cc Caterpillar V-Twin OHV Engine
- Suitable for powering more equipment and heavier loads
- Fully-Pressurized Oil System
- Provides added protection during operation
- Extra-Large, 13.5-Gallon Metal Fuel Tank w/ Fuel Gauge
- Allows for run-times over 11-hours @ 50% load
- All-Copper Windings - Less Than 5% THD
- Provides clean power suitable for sensitive electronics and tools
- Low-Idle Mode
- Optimizes fuel consumption and noise levels for less engine wear
- 120/240V (L14-50R) 50-Amp & (14-30R) 30-Amp Twistlock Outlets
- Allows this generator to provide power to larger tools and manual transfer switches
- (2) 120V GFCI Duplex Outlets & Circuit Breaker Protection
- Helps prevent electrical shock, especially during wet conditions
- Lighted Control Panel
- Provides easy, one-sided operation
- Removable Comfort Handle & Wheel Kit
- 11" Solid steel wheels w/ solid rubber tires for easy transportation
- Removable Lifting Eye
- Makes this generator easy to move on the job site
- Premium Muffler & USDA Approved Spark Arrestor
- Helps reduce noise levels and provide safer operation in dry conditions
- Includes Tool Kit & Engine Oil
- Provides everything you need to get up and running, in the box
- 3-Year Limited Warranty (Must Register within 30 Days)
- Standard 2-Year Limited Warranty if not registered within 30 days
California residents see
Warning: This product can expose you to chemicals including Benzene which is known to the State of California to cause Cancer.
For more information go to: www.p65Warnings.ca.gov
Specifications
Plug Types






502-3700

Overview
Weight
353 Pounds
Certification
CARB
Made in USA
No
Consumer Warranty
3 Years
Commercial Warranty
3 Years
Product Style
Portable Generator
Product Length
35.7 Inches
Product Width
32.7 Inches
Product Height
35.8 Inches
UPC
815683023884
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Alternator
Brush
Auto Voltage Regulation
Yes
Rated Watts
12000 Watts
Surge Watts
15000 Watts
Fuel Type
Gasoline
Rated Amps
50 Amps
Portability Kit
Never Flat Wheels
Tank Size
13.2 Gallons
Run Time @ 50% Load
11.7 Hours
Fuel Tank Material
Metal
Fuel Gauge
Yes
Idle Control
Yes
Hour Meter
Yes
Voltage Meter
Yes
Lifting Eye
Yes
Battery
Included
Grade Type
Semi-Pro
Engine
Engine Brand
Caterpillar
Starting System
12-Volt Button Start
CC
670 CC
Consumer Engine Warranty
3 Years
Commercial Engine Warranty
3 Years
Engine RPM
3600 RPM
Low Oil Alert/Shutdown
Yes
Cast Iron Sleeve
Yes
Plugs
NEMA 5-20R - GFCI
2
NEMA L5-30R
2
NEMA L14-30R
1
NEMA 14-50R
1
Reviews
(8)
Caterpillar 502-3700 Reviews & Ratings
Customer Photos and Videos

Chinese Engine That Nobody Will Service
By Dan B
Massachusetts
Review Posted 12/11/2022
Only two years old and unit runs rough and surges constantly unless choked. Nobody will repair it they all say it’s some kind of junky Chinese engine and want nothing to do with it. Called their customer support and they have a chain of dodgy repair shops that are an hour away. My advice but a unit with a known brand engine like Kohler or Briggs and Stratton
Dan B Does Not Recommend This
Was this review helpful?
Rating Breakdown
3/5
2/5
1/5
1/5

Awesome Product Highly Recommend
By Robert G.
LADY LAKE, Florida
Purchased 05/14/2020 |
Review Posted 06/09/2020
Outstanding unit powers the whole house, makes the neighbor's jealous 🤣
Robert G. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
High Quality, Price, Durable, Features

Great So Far
By Jay K.
ANAHEIM, California
Purchased 09/27/2019 |
Review Posted 11/14/2019
I have unpacked the unit and test started it. The instructions were clear. The unit has all of the features I thought I'd need and it is well built. It is laud.
It is easy to mover around with the weight balance and the handle. The engine is huge so I can see why it is electric start. Keeping a battery around and charged looks like the most difficult task so far.
I still have to connect it to the house but so far so good. I have not put any time on the unit so I'm not sure about the recommendation. I have to check a box to get this published so I chose yes.
It is easy to mover around with the weight balance and the handle. The engine is huge so I can see why it is electric start. Keeping a battery around and charged looks like the most difficult task so far.
I still have to connect it to the house but so far so good. I have not put any time on the unit so I'm not sure about the recommendation. I have to check a box to get this published so I chose yes.
Jay K. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
4/5
3/5
Pros:
High Quality, Easy To Use, Exceeded Expectations, Features

Excellent Value!
By Uwe B.
Port Orchard, Washington
Purchased 10/17/2017 |
Review Posted 12/16/2017
Great quality for the money. Well built and easy to move around due to good wheel placement even though it is 400 pounds. Also, it is no louder than our much smaller generator.
Uwe B. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
High Quality, Easy To Use, Price, Exceeded Expectations

Amazing Generator
By Jacquie H.
Kings Park, New York
Purchased 11/03/2017 |
Review Posted 12/15/2017
Great product and easy to set up.
Jacquie H. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
High Quality, Durable, Easy To Use, I'd Buy It Again
Cons:
Was not set up for Gas and Propane

The Best Brand Generator CAT #1
By Wilmer B.
Lawrence, Massachusetts
Purchased 10/20/2017 |
Review Posted 12/12/2017

Good price. Free shipping good customer service
Wilmer B. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Durable, Easy To Use, High Quality, I'd Buy It Again
Cons:
Packaging, Durability

The Best Generator
By Jaime R.
Orlando, Florida
Purchased 11/06/2017 |
Review Posted 12/12/2017
It works very well and everyone loves it.
Jaime R. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Price, Exceeded Expectations, High Quality

Great Product
By Ralph W.
Bonita Springs, Florida
Purchased 11/06/2017 |
Review Posted 12/01/2017
We recently received the Cat generator and are waiting on our electrician to install our transfer switch. Thus we can't comment about the product until we can test it. We wanted a commercial grade product like this. EGD was great. Due to hurricane issues these are in demand and hard to get.
Set up was easy. My only issue is that access to fill with oil is difficult and should be addressed in future designs.
We were without power for 11 days with Irma at our home and 7 days at our business.
Set up was easy. My only issue is that access to fill with oil is difficult and should be addressed in future designs.
We were without power for 11 days with Irma at our home and 7 days at our business.
Ralph W. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Durable, Price, Reliable, High Quality
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CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)








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