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โก Stay powered, rain or shine โ the proโs choice for seamless generator hookup!
The Reliance Controls PB50 is a rugged, NEMA 3R-rated 50-Amp power inlet box designed for outdoor use with generators up to 12,500 watts. Featuring a patented design with four versatile knockouts and a removable faceplate, it enables easy, secure hardwiring to transfer switches or panels. Its rust-proof, rain-tight construction and 5-year warranty make it a reliable, professional-grade solution for safe generator power integration.






| ASIN | B000HRWGBW |
| Best Sellers Rank | #26,210 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #3 in Outdoor Generator Inlet Boxes |
| Brand | Reliance Controls |
| Brand Name | Reliance Controls |
| Capacity | 63.12 Cubic Inches |
| Color | Gray |
| Customer Reviews | 4.7 out of 5 stars 1,814 Reviews |
| Finish Type | Non-Metallic |
| Global Trade Identification Number | 00851890000287 |
| Installation Type | Screw-In |
| Item Dimensions D x W x H | 2.6"D x 4"W x 6"H |
| Item Weight | 1.97 Pounds |
| Manufacturer | Reliance Controls |
| Material | Carbon |
| Model Number | PB50 |
| Part Number | PB50 |
| Product Dimensions | 2.6"D x 4"W x 6"H |
| Style | Inlet Box |
| UPC | 851890000287 |
| Unit Count | 1.0 Count |
| Warranty Description | 5 Years |
L**O
Well made
American made, God bless America.
2**R
High quality Inlet box
Very high quality and easy to install box. Feels like it will keep the rain out nicely. Connectors all felt strong. Tested after installing with a 10000 watt generator with the whole house running. Worked perfectly.
A**R
Good solid box
Allen key tightens up the wires. A 6โ T-handle is ideal. Everything else was good.
P**R
Generator power ink
Works great as intended
A**R
Good Generator Inlet Box
This inlet box is very good quality but could use a few design changes. The connectors are designed for 8 AWG so you cannot connect 6 AWG (which is required for 50 amp) without using wire pin connectors and bending them 90 degrees. Next, the box is a bit too small for 6 AWG so make sure you use the bottom knock out. Otherwise, works well and gets the job done. Docking 1 star because it is not really well designed for 6 AWG.
R**T
Easily installed
Easily installed, sufficient room for 6 gauge conductors (it will accommodate 4 gauge). Not sure about previously noted problems with wire size and connecting the generator cord. This was one of the easiest 6 gauge installs and my generator cord inserts and locks with no issues. Maybe they were using a cheap import cord?
S**N
Well-made inlet box
This brand came recommended by my electrician for generator inlet box. I went with 50 amp instead of 30 to future proof the generator setup. Installation for a panel with interlock kit went through w/o any issues.
R**.
Works with #6 wire
Bought this box to replace a 30 amp inlet box that was mounted to the house when we purchased it in early 2021. This box was very easy to install on the brick exterior of the house. I added a thick rubber washer between the box and the brick at the top screw to allow the top to easily slide down over the box. I also used #6 wire and had no problem with the thicker wire. I followed the advice of another rater and made a 45 degree bend in the wire about an inch from the end, before removing the insulation. Once the insulation is removed the wire fits very nicely into the hole and lies parallel to the plane of the back of the inlet receptacle and the box. Completing the assembly was not that difficult after the wires were securely attached to receptacle. Also, I only left about 6 inches of wire in the box, just enough to work with. An electrician quoted me $900+ to install the box and connect to the transfer switch. Time to head down to Loweโs to buy the generator.
V**R
It has copper connections. Not aluninum
You tube folk recommended going for the copper cone toons. Only 50 amp one on Amazon
R**L
Great product
Well built very sturdy
O**R
Solide
Solide et bonne connection avec le connecteur mรขle de la mm marque.
L**N
Good product.
Good product. Wiring from the back is a little difficult when using 6-gauge wires.
U**.
wiring space
Overall this is a good sturdy unit. My only negative would be that the wiring space inside the box could be a bit bigger. It's a bit crowded for 3 #6 wires plus ground
Trustpilot
1 month ago
1 week ago