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Reliance Controls Pro/Tran 2 - 30-Amp (120/240V 4-Circuit) Indoor Transfer Switch w/ Inlet
Model:
304B
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Recommended Accessories

Expert Recommended Accessories
Selected by Jared, our Expert
Required Accessories
9
These accessories are required to properly setup/install this product.
Optional Accessories
10
Features
Type
Manual
Amp Rating
30
Circuits
4
Voltage
120/240 Single-Phase
Enclosure
NEMA 1R
- Pro/Tran® 2 Series 30-Amp 4-Circuit 120V Manual Transfer Swtich
- Same benefits as the original plus new some new features
- Safest Way to Distribute Power
- Eliminates dangerous backfeeds and electrical overloads
- (4) Total Circuits (1" Interchangable Style)
- Four 15-Amp Single-Pole (120 Volts) circuits
- Versatile Connection
- Allows hardwiring OR plug-in connection via power inlet (included)
- Hinged, Non-Metalic Cover
- Protects toggle swtiches/breakrs & povides a finished apperance
- Powder-Coated Steel Cabinet For Indoor Installation
- 18" Flexible conduit w/ all factory wires clearly marked/colored
- (6) Combination 1/2" & 3/4" knockouts for easier installation
- Easily re-configured in the field for multiple 2-pole circuits
- Safety & Certifications
- Certified for use by Underwriter Laboratories to UL Stanard 1008
- Meets all requirements of article 702 of the NEC ANSI/NFPA 70
- 5-Year Limited Warranty
California residents see
Warning: This product can expose you to chemicals including Cadmium which is known to the State of California to cause Developmental Harm.
For more information go to: www.p65Warnings.ca.gov
Specifications
Plug Types

304B

General Information
Product Category
Generator Transfer Switches
Overview
Product Category
Generator Transfer Switches
Weight
15 Pounds
Made in USA
Yes
Consumer Warranty
5 Years
Product Length
11.25 Inches
Product Width
7.75 Inches
Product Height
4.5 Inches
UPC
815181012595
Product Specs
Voltage
120/240 Single-Phase
Frequency
60 Hertz
Rated Watts
3750 Watts
Rated Amps
30 Amps
Enclosure
NEMA 1R
Conduit Length
18
Number of Circuit Breakers
4
Max Generator Input
30 Amps
Maximum Wattage
3750 Watts
UL Listed
Yes
Transfer Switch Circuits
15A 120V
4
Circuit Breaker Protection
Each Circuit
Plugs
NEMA L14-30R
1
Reviews
(6)
Reliance Controls 304B Reviews & Ratings
Customer Photos and Videos




Exactly What I Needed And Easy Installation
By Jason S
New York
Purchased 09/15/2023 |
Review Posted 10/10/2023



I installed this transfer switch to run my gas furnace, 2 refrigerators and a freezer. I didn’t use the inlet plug included because I ran a 30 amp outdoor inlet box that I would plug my generator into. Reliance has YouTube videos that walked me right through the installation.
Jason S Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Price, I'd Buy It Again
Cons:
None

Great DIY product
By Robert G.
Royersford, Pennsylvania
Purchased 02/02/2021 |
Review Posted 08/17/2021
My application was125v 30A only, indoor. Might suggest a common for both legs for 125v application. Remove common when req'd for 240v.
Robert G. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
4/5
4/5
Pros:
Easy To Use, Id Buy It Again, Features, Exceeded Expectations
Cons:
price

Easy To Install
By John H.
Raleigh, North Carolina
Purchased 07/01/2021 |
Review Posted 08/03/2021
Easy to install and gives you a safe way to hook up your generator to power the circuits you need most during outages.
John H. Recommends This
Was this review helpful?
Rating Breakdown
4/5
4/5
5/5
4/5
Pros:
Price, Features, Easy To Use, Id Buy It Again

Shipping Was Quick To Respond And Deliver
By Roger H.
WINSTON SALEM, North Carolina
Purchased 12/16/2020 |
Review Posted 03/22/2021
Excellent service and quick delivery.
Roger H. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Price, Fast, High Quality, Id Buy It Again
Cons:
none

Great Product And Value
By Robert F.
Gatlinburg, Tennessee
Purchased 05/14/2020 |
Review Posted 07/21/2020
We have frequent power outages in the mountains. Purchased to pair 3 kw generator. Now I have 4 backed up house circuits. Easy to install with a basic knowledge of panel wiring.
Robert F. Recommends This
Was this review helpful?
Rating Breakdown
5/5
5/5
5/5
5/5
Pros:
Easy To Use, Quiet, Price, High Quality

Poor Quality Product
By Charles G.
Hamilton, Alabama
Purchased 03/18/2019 |
Review Posted 04/11/2019
Internal wiring problems!! After installation...I found the generator load wire had not been tightened! But apparently there were additional connection problems under the cover that was secured with brads. So rather than rip it out and send it back I just used the working circuits which was enough for my needs.
Big price for such poor quality.
Big price for such poor quality.
Charles G. Does Not Recommend This
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Expert Response
Very sorry to hear you're having problems with your switch. Rarely do we hear about problems with these switches. Please understand that during shipping, connections can come loose. We always suggest checking all connections prior to installation.

Jared G.
Generator Expert
Rating Breakdown
1/5
1/5
1/5
1/5
Cons:
Low Quality, Expensive
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Manuals
304B

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Reliance Controls Pro/Tran 2 - 30-Amp (120/240V 4-Circuit) Indoor Transfer Switch w/ Inlet


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