Face Book
Pin It
Reddit
Tweet This
Email This Page
Print This Page
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Hover to zoom
1 of 6
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
+3
View All

CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)

Model:

502-3700

Write A Review
Product Discontinued
Sorry, this product is no longer available.
Try this product instead
CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)
CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)
Model: 502-3700
Product Discontinued
Accessories
Features
Specifications
Reviews
How-To Articles
Manuals
Similar Products

Recommended Accessories

Electric Generators Direct expert image
Expert Recommended Accessories Selected by Jared, our Expert
Optional Accessories 8
$76.50
Only 5 In-Stock
$6.50
In-Stock
$79.79
Only 1 In-Stock
$44.99
Only 5 In-Stock
$57.99
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
NEMA 5-20R (GFCI)
NEMA 5-20R (GFCI)
NEMA L5-30R
NEMA L5-30R
NEMA L14-30R
NEMA 14-50R
502-3700
specs product image PID-80296
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
review image 1
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
Features
3/5
icon-review-marker
Quality
2/5
icon-review-marker
Performance
1/5
icon-review-marker
Value
1/5
icon-review-marker
Verified Buyer
Verified Buyer
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
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
High Quality, Price, Durable, Features
Verified Buyer
Verified Buyer
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.
Jay K. Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
4/5
icon-review-marker
Value
3/5
icon-review-marker
Pros:
High Quality, Easy To Use, Exceeded Expectations, Features
Verified Buyer
Verified Buyer
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
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
High Quality, Easy To Use, Price, Exceeded Expectations
Verified Buyer
Verified Buyer
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
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
High Quality, Durable, Easy To Use, I'd Buy It Again
Cons:
Was not set up for Gas and Propane
Verified Buyer
Verified Buyer
The Best Brand Generator CAT #1
By Wilmer B. 
Lawrence, Massachusetts
Purchased 10/20/2017 | 
Review Posted 12/12/2017 
review 6 image 1
Good price. Free shipping good customer service
Wilmer B. Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
Durable, Easy To Use, High Quality, I'd Buy It Again
Cons:
Packaging, Durability
Verified Buyer
Verified Buyer
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
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
Easy To Use, Price, Exceeded Expectations, High Quality
Verified Buyer
Verified Buyer
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.
Ralph W. Recommends This
Was this review helpful?
Rating Breakdown
Features
5/5
icon-review-marker
Quality
5/5
icon-review-marker
Performance
5/5
icon-review-marker
Value
5/5
icon-review-marker
Pros:
Durable, Price, Reliable, High Quality

How-To Articles

How to Pick the Perfect Professional Portable Generator
How to Pick the Perfect Professional Portable Generator
A professional jobsite generator gives you the portable power you need for cons...
How to Keep Your Cool After a Hurricane
How to Keep Your Cool After a Hurricane
We've all procrastinated before. Maybe it was for an unpleasant project th...
How to Pick the Perfect Portable Emergency Generator
How to Pick the Perfect Portable Emergency Generator
We don't realize how much we rely on electricity until it's gone. Without power...
Electric Generators How-To Library
Electric Generators How-To Library
Articles, Tips and Buying Guides from Our Experts

Manuals

502-3700
CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)
Top Sellers in Category
 
Media Gallery
CAT® RP12000 E - 12,000 Watt Electric Start Portable Generator (CARB)
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Caterpillar 502-3700
Customer Review Images