---
product_id: 2017443
title: "Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray"
brand: "reliance controls"
price: "S/.585"
currency: PEN
in_stock: true
reviews_count: 13
category: "Reliance Controls"
url: https://www.desertcart.pe/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet
store_origin: PE
region: Peru
---

# 50 Amp max input 12,500W max generator power NEMA 3R rain-tight rating Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray

**Brand:** reliance controls
**Price:** S/.585
**Availability:** ✅ In Stock

## Summary

> ⚡ Stay powered, rain or shine — the pro’s choice for seamless generator hookup!

## Quick Answers

- **What is this?** Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray by reliance controls
- **How much does it cost?** S/.585 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.pe](https://www.desertcart.pe/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet)

## Best For

- reliance controls enthusiasts

## Why This Product

- Trusted reliance controls brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Generous Wiring Space:** Patented design with removable faceplate for effortless installation and maintenance.
- • **Built for the Elements:** NEMA 3R rain-tight, rust-proof design keeps your power inlet safe outdoors.
- • **Heavy-Duty Reliability:** Steel construction with anti-corrosive powder coating ensures long-lasting durability.
- • **Power Up Without Wires:** Hardwire directly to transfer switches—ditch the messy cords through windows.
- • **Trusted American Innovation:** Backed by over a century of expertise and a 5-year warranty for peace of mind.

## Overview

The Reliance Controls PB50 is a rugged, rain-tight 50-Amp power inlet box designed for outdoor use with generators up to 12,500 watts. Featuring a patented spacious wiring design, removable faceplate, and durable steel construction with anti-corrosive coating, it enables safe, hardwired connections to transfer switches—eliminating the need for extension cords through doors or windows. Trusted for over 100 years, this NEMA 3R-rated inlet box combines professional-grade reliability with easy installation and a 5-year warranty.

## Description

Product Description The Reliance Controls PB50 50-Amp NEMA 3R Power Inlet Box is a watertight electrical inlet box designed to be located outdoors where the generator is running in order to prevent dangerous carbon monoxide fumes from entering your house or other cherished space. This inlet box should be safely hardwired through an outside wall directly to the transfer switch or panel, eliminating the need for cords running through windows or doors. It was also designed to be wired directly to the transfer switch or panel by using one of the four included combination 1/2-inch and 3/4-inch knockouts (one on each side, bottom and back). The exclusive, patented make provides generous wiring space and facilitates rough-in. The face of the box is removable for easy placement and wiring and, finally, it was constructed of steel with rugged, anti-corrosive, powder-coated paint and has a spring-loaded inlet cap to prevent moisture front entering the front-mounted connector inlet when not in use. Since 1909, Reliance Controls Corporation has contributed more innovations than any other single manufacturer and has been awarded over 85 patents on manual transfer switches, time switches and accessories. Reliance Controls Corporation specializes in the manufacturing of a wide variety of electrical products. The primary product line consists of heavy duty time clocks and controls, generator accessories, transfer switches and transfer panels for portable generators. And after over a century of innovation, Reliance Controls Corporation has built an enviable reputation for high quality, superior engineering and exceptional customer service. desertcart.com The Reliance Controls 50 Amp power inlet box is designed for outdoor use and can be hardwired directly to Reliance Controls transfer switches or panels, eliminating need for cords running through windows or doors. This rain-tight, rust-proof unit works with generators working at 12,500 watts. Using one of the four combination 1/2-inch and 3/4-inch knockouts (one on each side, bottom and back), the power inlet box can be wired directly to the transfer switch or panel. The exclusive patented design provides generous wiring space. The face of the box is removable for easy placement and wiring. It is cUL 1008 listed and covered by a 5-year warranty.

Review: Well made - American made, God bless America.
Review: Generator power ink - Works great as intended

## Features

- For indoor or outdoor use with specific transfer switches, manual transfer panels and generator-ready load centers
- Outdoor, raintight NEMA 3R non-metallic power inlet box
- Maximum generator running watts: 12,500
- Maximum generator input: 50A@125/250VAC
- Intended for use with 8 AWG 75 degrees C insulated wire

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HRWGBW |
| Best Sellers Rank | #3,842 in Patio, Lawn & Garden ( See Top 100 in Patio, Lawn & Garden ) #9 in Outdoor Generator Inlet Boxes |
| Brand | Reliance Controls |
| Capacity | 63.12 Cubic Inches |
| Color | Gray |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,807) |
| Finish Type | Non-Metallic |
| Global Trade Identification Number | 00851890000287 |
| Installation Type | Screw-In |
| Is Discontinued By Manufacturer | No |
| Item Weight | 1.97 pounds |
| Item model number | PB50 |
| Manufacturer | Reliance Controls |
| Material | Carbon |
| Product Dimensions | 2.63 x 4 x 6 inches |
| Style | Inlet Box |
| UPC | 851890000287 |

## Product Details

- **Brand:** Reliance Controls
- **Color:** Gray
- **Finish Type:** Non-Metallic
- **Material:** Carbon
- **Style:** Inlet Box

## Images

![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 1](https://m.media-amazon.com/images/I/4120c7Vh7eL.jpg)
![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 2](https://m.media-amazon.com/images/I/412vYiLU9xL.jpg)
![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 3](https://m.media-amazon.com/images/I/41PU39QGGdL.jpg)
![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 4](https://m.media-amazon.com/images/I/41lI2UH50DL.jpg)
![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 5](https://m.media-amazon.com/images/I/710+v98izYL.jpg)

## Available Options

This product comes in different **Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Well made
*by L***O on September 4, 2025*

American made, God bless America.

### ⭐⭐⭐⭐⭐ Generator power ink
*by P***R on October 12, 2025*

Works great as intended

### ⭐⭐⭐⭐⭐ Well-made inlet box
*by S***N on October 23, 2025*

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.

## Frequently Bought Together

- Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray
- A510C Pro/Tran2 50-Amp 10-Circuit 2 Manual Transfer Switch
- Conntek 1450SS2-15 50 Amp Temp Power Generator Cord, 15 Feet, Black

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**Shop now:** [https://www.desertcart.pe/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet](https://www.desertcart.pe/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet)

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*Product available on Desertcart Peru*
*Store origin: PE*
*Last updated: 2026-02-01*