Best Generator Inlet Boxes in 2026
Daisy
Last Updated: Feb 6, 2026
Daisy
Last Updated: Feb 6, 2026
* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Connecticut Electric | 9.82 | ✅ | ✅ | ✅ |
Accepts Siemens HR Series Conduit Hubs
Complete with Pre-Wired Flanged Inlet Receptacle
For use with EmerGen Switch Transfer Switches and matching Generator Receptacles
Listed to UL-1008 requirements
Rainproof generator power inlet box with cover
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Connecticut Electric | 9.84 | ✅ | ✅ | ✅ |
For use with EmerGen Switch Transfer Switches and matching Generator Receptacles
Rainproof generator power inlet box with cover
Complete with Pre-Wired Flanged Inlet Receptacle
Accepts Siemens HR Series Conduit Hubs
Listed to UL-1008 requirements
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Hynade USA | 9.85 | ✅ | ✅ | ✅ |
30 Amp, 125/250V, NEAM L14-30 inlet plug,Generators Up to 7500 Running Watts PB30 30Amps 3R NEMA Power Inlet Box.ETL listed.
The generator transfer switch box has design patent, waterproof flip lid,easy to use, higher security,effective waterproof and dust-proof, ensuring safety use in any environment. anti-corrosive powder-coat paint,anti-corrosive powder-coat paint,rust proof
The generator inlet box has generous wiring space and facilitates through-in; the face of the box is removable for easy placement and wiring
The power inlet box designed to be installed outdoors in an open area where the generator, this watertight electrical inlet box eliminating the need for cords running through windows or doors.Great for backup power during a power outage
Sturdy structure,easy to install.Three knockouts are located on the inlet,push-in wire connections,there are pre-punched sturdy screw holes for easy mounting on the wall
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| BESYL | 7.87 | ✅ | ✅ | ✅ |
Knockouts Notice: No Knockouts, No drilling required. Only need to unscrew the nut inside of the BESYL 50 amp generator inlet box to remove and replace the wiring caps.
ETL LISTED. 50A, 125/250V, 12500W Power Inlet Box, NEMA PB50, CS6375, 80SS2-GYBX or SS2-50P generator inlet plug, compatible with all 50 Amp NEMA SS2-50P generator cord.
It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. By the green light, we can know it is working, which provides optimum performance and added safety. It is updated and safer than other style 80SS2-GYBX, PB50 etc.
The inlet box is constructed of steel with rugged, anti-corrosive powder-coat paint and has a flip lid with green light to prevent moisture front entering the connector inlet when not in use.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| RundA | 9.17 | ✅ | ✅ | ✅ |
【Generator Power Inlet Box】Power inlet box is an outdoor/watertight electrical inlet for a 50 Amp SS2-50 generator cord. 125/250V, 12500W. It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
【Safety Assurance & ETL Certificate】It is designed to be located outdoors where the generator is running to prevent dangerous carbon monoxide fumes from the generator from entering your house. This inlet box is then safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. Our generator power inlet box passed the certifications of ETL.
【Best Space Design & Easy to Install】Compared with ordinary boxes, we have increased the wiring space by 50%. There are generous wiring space and facilitates through-in. The front of the box is removable for easy placement and wiring.
【Weatherproof & Anty-rust】The front entry inlet has a weatherproof spring cover which closes when not in use to protect the inlet from the elements. The surface of the power inlet box with anti-corrosive powder-coat paint which can resist weather damage like rain, UV, will not rust.
【Green Light Indication】New upgraded version provide a Green Power Indicator. There will be on a green light on the flip lid when plugging into the generator cord and powering on the generator. It gives a visibly clear indication when it is working and inlet is ready to use, which provides optimum performance and added safety.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ❌ | ❌ | ❌ |
ETL Certification: 125/250V, 12500W, 50Amp generator inlet box with CS6375 inlet generator plug, suitable for all 50 amp NEMA SS2-50 generator cord. This pb50 power inlet box is a good partner for the generator to accommodate the power cord. It is designed to be installed in outdoor areas where generators are used outdoors, and also be ideal for backup power during power outages/bad weather, etc.
Best Choice for Outdoor: the whole body of GeepKey generator power inlet box is covered with anti-rust coating, with powerful features such as wind, rain and rust! In addition, it adopts a flip design (with weatherproofing foam inside), which is dedicated to preventing dust and humid air; it can provide the best protection in any bad weather!
Green Safety Light: There is a clear green warning light on the flip cover, which will be lit when the power connection is successful; Comparing with the old version, this generator inlet 50 amp plug can see a clearly visible green light indicator when working (especially in Night and dark areas), thus providing the best performance and higher security
Large Space with 4 Way Connection: The large space of 6.1*4.1*3.1 inches allows you to wire more neatly; the heat dissipation effect is better, and it has a longer service life. The front panel can be removed, making installation more portable. And the 1.2-inch combination hole with 4 areas (left, right, bottom, rear) can be directly connected to the switch and electrical panel from multiple directions.
100% satisfactory service: This product is an upgraded model developed by us in accordance with market needs. Its performance, material, life, safety and other aspects are optimized、upgrade by our professional engineers, and we provide customers with 18 Month’s high-quality after-sales service; if you have any questions, please feel free to contact us.
Important❗❗We are committed to providing safer power transmission and make it comply with ETL standards, so we have set a more solid knockout to ensure that it is not easy to be penetrated to improve safety. It is necessary to use professional tools to penetrate (such as bi-metal hole saw/knockout punch); If you encounter any problems, please feel free to contact us!
❗❗If you damage the 50 Amp generator plug because you can’t get through the Knockout, you can try to contact us first (email or through the seller’s contact tool), we will provide you with a replacement or a full refund!
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Ray Squad | 9.87 | ✅ | ✅ | ✅ |
Flexible Upgrade Option: The Generac 6853 HomeLink transfer switch is designed to be upgradeable, allowing for future conversion to an automatic home standby transfer switch when needed
Power Source Indicator: Equipped with indicator lights that inform you about the presence of utility or generator power, providing you with essential information during power outages
Reliable Power Delivery: Safely powers hard-wired appliances, including furnace, well pump, and lights, ensuring continuous operation during emergencies or power disruptions
Expandable Circuit Capacity: Comes with 8 circuits, expandable to 10 circuits, and accepts standard, tandem, GFCI, and arc fault breakers for increased versatility
Versatile Power Solution: Ideal for various applications, from small houses, greenhouses, and tents to tiny homes, inflatables, and outdoor activities, making it a portable and efficient power option
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Sale Stores ✅ | 9.87 | ✅ | ✅ | ✅ |
For use with a portable generator to deliver power to your home
SAFE, VERSATILE & UNIVERSAL - prevents back-feeding, can be upgraded later for use with Generac home standby generator (up to 11kW) and compatible with any portable generator with GFCI protected outlets
ELECTRIC ROCKER SWITCH – Easily switches from utility to generator power with the simple push of a button
POWER INDICATOR LIGHTS – Displays when you have utility or generator power present
Compatible with Generac portable generator models: XG10000E, XP10000E, GP15000E, GP17500E (sold separately)
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| ShinePick Direct | 5.44 | ✅ | ✅ | ✅ |
【Generator Power Inlet Box】ShinePick Power inlet box is an outdoor/watertight electrical inlet for a 50 Amp SS2-50 generator cord. 125/250V, 12500W. It is designed to be installed outdoors in an open area where the generator is being used and perfect for backup power during a power outage.
【Safety Assurance & ETL Certificate】 It is designed to be located outdoors where the generator is running to prevent dangerous carbon monoxide fumes from the generator from entering your house. This inlet box is then safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. Our generator power inlet box passed the certifications of ETL.
【Best Space Design & Easy to Install】Compared with ordinary boxes, we have increased the wiring space by 50%. The front of the box is removable for easy placement and wiring,the heat-dissipation is more faster to ensure long service life.
【Weatherproof & Rustproof】ShinePick enclosed power intlet box is constructed of rugged steel and covered with corrosion resistant coating inside and out. The front lid can be closed securely when not in use to protect the connector from the dust and moisture.The surface of the power inlet box with anti-corrosive powder-coat paint which can resist weather damage like rain, UV, will not rust.
【Safe Light Indicator】A GREEN LIGHT power indication on the lid to give you a visibly clear indication light when power cord plug into it and the generator, added safety in night or dark areas.
| SELLER | SELLER SCORE | AMAZON FULFILLED | PRIME | FREE SHIPPING |
|---|---|---|---|---|
| Marketplace Pros | 9.93 | ✅ | ✅ | ✅ |
[Empower with Efficiency]: When you need a generator power source outdoors, depend on the BISupply Generator Power Inlet Box to provide a safe and reliable source of power; Generator box features a green light indicator to show when the generator is powered on
[Built to Last]: No need to worry about this generator connection box rusting and cracking after extended, repeated use; 30 amp generator inlet box is constructed of copper and coated in gray anti-corrosive powder-coat paint; Weatherproof spring cover protects inlet while not in use
[Easy to Install]: 30 amp inlet box is designed with 3 inches (7.6cm) of space behind the inlet source so that you can have ample space for wiring; 30 amp power inlet box also features removable front for easy placement when installing
[For Your Projects]: Use this generator inlet box 30 amp power box for using your generator outdoors; 30a generator inlet box will fit 3 prong L5-30P connections when you need a backup generator if there is a power outage in your workplace or home; Designed for 125 volt applications
[Perfect Size]: 30amp generator inlet box measures 4 x 4 x 6 inches (10 x 10 x 15cm); Inlet box weighs just 2.3 pounds (1.04kg) for easy transportation to your worksite; Package includes 1 outdoor power inlet box for your backup generators; Includes installation instructions
Here is the list of top-rated brands that were evaluated by PM.
| Brand | Count |
|---|---|
| Connecticut Electric | 2 |
| Generac | 2 |
| Besyl | 1 |
| Bisupply | 1 |
| Geepkeypro | 1 |
| Hynade | 1 |
| Rundik | 1 |
| Shinepick | 1 |
We've carried out a comprehensive analysis of 2,291 reviews on generator inlet boxes, using our selection criteria to identify the best options in the categories. Our findings reveal that most customers typically select generator inlet boxes priced around $160.27, with top brands including and
Our team of expert editors reviewed these high-quality items and handpicked the top 10 generator inlet boxes for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the categories category. These include and .
We are dedicated to assisting our users in finding the right switches Products based on their needs, saving them considerable time when choosing which generator inlet boxes to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.
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