--- product_id: 2017443 title: "Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray" brand: "reliance controls" price: "27916 som" currency: KGS in_stock: true reviews_count: 13 category: "Reliance Controls" url: https://www.desertcart.kg/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet store_origin: KG region: Kyrgyzstan --- # 50A max input Easy wiring access NEMA 3R rain-tight Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray **Brand:** reliance controls **Price:** 27916 som **Availability:** ✅ In Stock ## Summary > ⚡ Stay powered, rain or shine — the pro’s choice for seamless backup energy! ## 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?** 27916 som with free shipping - **Is it available?** Yes, in stock and ready to ship - **Where can I buy it?** [www.desertcart.kg](https://www.desertcart.kg/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 - • **Safety First, Always:** Hardwire directly to transfer switches to eliminate hazardous extension cords and keep your home safe. - • **Durability Meets Design:** Rugged, powder-coated steel construction resists corrosion and protects your investment for years. - • **Power Up with Confidence:** Supports up to 50 amps at 125/250VAC for seamless generator integration. - • **Built to Brave the Elements:** NEMA 3R rated rain-tight design ensures reliable outdoor performance, no matter the weather. - • **Installation Made Effortless:** Removable faceplate and four versatile knockouts provide generous wiring space and quick setup. ## Overview The Reliance Controls PB50 is a robust 50-amp, NEMA 3R-rated power inlet box designed for outdoor use with generators up to 12,500 watts. Featuring a rain-tight, corrosion-resistant build and easy wiring access, it enables safe, hardwired connections to transfer switches, eliminating the need for extension cords. Backed by over a century of innovation and a 5-year warranty, this inlet box is engineered for professional-grade reliability and peace of mind. ## 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: Great product. - Great product. Review: 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. ## 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 | |---------------|-------| | Brand | Reliance Controls | | Capacity | 63.12 cubic inches | | Color | Gray | | Finish Type | Non-Metallic | | Installation Type | Screw-In | | Item Dimensions D x W x H | 2.6"D x 4"W x 6"H | | Item Weight | 2 pounds | | Material | Carbon | | Product Dimensions | 2.6"D x 4"W x 6"H | | Style | Inlet Box | ## 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/71b379jqOoL.jpg) ![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 2](https://m.media-amazon.com/images/I/710+v98izYL.jpg) ![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 3](https://m.media-amazon.com/images/I/71uZdC7Uv4L.jpg) ![Reliance Controls PB50 50-Amp (CS6375) NEMA 3R Power Inlet Box,Gray - Image 4](https://m.media-amazon.com/images/I/712QonfFlPL.jpg) ## Available Options This product comes in different **Style** options. ## Customer Reviews ### ⭐⭐⭐⭐⭐ Great product. *by O***K on June 14, 2026* Great product. ### ⭐⭐⭐⭐⭐ High quality Inlet box *by 2***R on October 1, 2024* 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. ### ⭐⭐⭐⭐⭐ Good solid box *by A***R on April 5, 2026* Allen key tightens up the wires. A 6” T-handle is ideal. Everything else was good. ## 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 --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.kg/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet](https://www.desertcart.kg/products/2017443-reliance-controls-pb50-50-amp-cs6375-nema-3r-power-inlet) --- *Product available on Desertcart Kyrgyzstan* *Store origin: KG* *Last updated: 2026-08-14*