Reliance Controls 50-Amp Non-Metallic Power Inlet Box PBN50 — NEMA 3R Raintight Outdoor

When you need a neat, code-friendly way to connect a portable generator to your home's electrical system, the Reliance Controls PBN50 provides a weatherproof inlet designed for outdoor installation. Its raintight housing and spring-loaded inlet cap keep moisture and debris out while the removable face and multiple knockouts simplify wiring. Built to pair with generators up to 12,500 running watts, this inlet box helps reduce the hazards and clutter associated with temporary extension cords.

How does this inlet box keep outdoor connections safe?

The PBN50 uses a NEMA 3R-rated enclosure and a spring-sealed inlet cover to protect the connector from rain and snow. The non-corrosive housing resists the elements, and the design keeps the power connection outside your living space to minimize fumes and trip hazards.

• NEMA 3R raintight enclosure for outdoor protection
• Spring-loaded inlet cap prevents moisture entry when idle
• Non-metallic construction resists corrosion and reduces conductivity
• Front-mounted inlet keeps generator connection external to the home

What makes installation easier for electricians and DIYers?

The PBN50 includes multiple combination knockouts and a removable faceplate so you can position and rough-in wiring before final assembly. Generous internal wiring space helps route conductors cleanly to the transfer switch or panel through an exterior wall.

• Four combination 1/2" and 3/4" knockouts (sides, bottom, back)
• Removable front for straightforward placement and wiring access
• Ample interior room reduces tight bends and eases connections
• Designed for direct hardwiring to transfer switches or service panels

Which generator sizes and setups is the PBN50 compatible with?

The inlet is sized for 50-amp connections and recommended for portable generators with up to approximately 12,500 running watts. It is intended to be mounted outdoors and hardwired to a transfer switch or panel rather than used with temporary indoor cord routing.

• Rated for 50A service connections
• Suitable for generators up to 12,500 running watts
• Best used wired directly to a transfer switch or main panel
• Not intended as an indoor or through-window cord solution

Who is this for? Homeowners and electricians who prefer a permanent, tidy generator connection will appreciate the PBN50. It suits anyone who wants a code-compliant outdoor inlet that minimizes exposed cords, helps keep generator exhaust outside living spaces, and speeds installation with preconfigured knockouts and a removable face. Backed by Reliance Controls' long history in generator accessories and transfer products, this inlet box is a practical choice for reliable, weatherproof generator hookups.