Southwire 52151-1/2DR-UPC Steel Square Electrical Box 4x4

Product Description

The SOUTHWIRE 52151-1/2DR-UPC is a screw-on drawn steel square electrical box measuring 4 inches x 4 inches, designed to distribute power across multiple electrical devices at junction and outlet points. Fabricated from drawn steel, this box accepts combination knockouts that allow wiring runs to split into two or more directions, giving electricians the flexibility needed on residential and light commercial jobs. It is UL listed and RoHS compliant, meeting standard requirements for general-purpose electrical rough-in work. The box is compatible with combination Phillips and slotted screw heads, reducing the need for multiple drivers on the job site.

This square box is suited for residential and commercial electrical installations where a central distribution point is needed for multiple conductor runs. It is a common choice for junction boxes, device boxes, and power distribution points in wall, ceiling, and exposed-conduit applications. Licensed electricians and experienced electrical contractors install this box during rough-in phases, securing it to framing or structural surfaces before finish work begins.

Key Features

• Drawn steel construction provides durability in standard electrical enclosure applications
• Combination knockouts support wiring runs in multiple directions for job-site flexibility
• Compatible with combination Phillips and slotted screw heads
• UL listed for safety compliance in general-purpose electrical installations
• RoHS compliant for restricted hazardous substance requirements
• 4 inches x 4 inches footprint fits standard square-box rough-in configurations

Compatibility

Designed as an OEM-style replacement and new-installation option for standard 4-inch square electrical box applications in residential and commercial wiring systems.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Always de-energize the circuit at the breaker panel and verify absence of voltage before working inside the box. Secure the box to framing or an approved structural surface before pulling conductors. Do not exceed the box fill capacity as calculated per NEC Article 314.

Technical Specifications

• Material: Drawn Steel
• Dimensions: 4 inches x 4 inches
• Weight: 0.676 pounds
• Certifications: UL Listed, RoHS Compliant
• Knockout Type: Combination
• Screw Head Compatibility: Combination Phillips and Slotted

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 52151-1/2DR-UPC