Abb 52151 X 4 in Square Steel Outlet Box 21 Cu in Ac Clamp

Product Description

The ABB INSTALLATION PRODUCTS 52151 x is a pre-galvanized steel 4-square outlet box designed for use with armored and metal clad cable installations. Measuring 4 inches by 4 inches with a depth of 1.5 inches, it provides 21 cubic inches of interior volume. The box ships with an integrated armored cable clamp (C-3) and includes 11 knockouts sized at 1/2 inch and 3/4 inch in an eccentric pattern. Licensed electricians and electrical contractors install this box as a standard rough-in enclosure in residential and commercial wiring systems where MC or AC cable is the wiring method of choice.

This outlet box is suited for wall and ceiling installations where armored or metal clad cable is required by code or specification. The 4-square form factor accommodates a wide range of cover plates and device rings, making it a versatile rough-in choice for receptacles, switches, and junction applications. The pre-galvanized steel finish provides corrosion resistance appropriate for standard interior environments.

Key Features

• 21 cubic inch interior volume meets NEC box-fill requirements for multi-conductor installations
• Integrated C-3 armored cable clamp supports direct MC and AC cable termination without a separate connector
• 11 eccentric knockouts in 1/2 inch and 3/4 inch sizes for flexible conduit or cable entry routing
• Pre-galvanized steel construction for durability and corrosion resistance
• 4-square profile accepts standard 4-inch square covers, device rings, and mud rings
• Listed to UL E2969 for code-compliant installations

Compatibility

Designed for use with armored cable (AC) and metal clad cable (MC) wiring systems. Accepts standard 4-inch square cover plates and device rings commonly used in commercial and residential electrical rough-in work.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC) and applicable local codes. Disconnect and lock out all power to the circuit before mounting the box or making any wiring connections. Secure the box to structural framing members using appropriate fasteners rated for the application. Verify box-fill calculations per NEC Article 314 before terminating conductors to ensure the 21 cubic inch capacity is not exceeded.

Technical Specifications

• Cubic Capacity: 21 cubic inches
• Box Size: 4 inches x 4 inches x 1.5 inches deep
• Knockout Sizes: 1/2 inch and 3/4 inch eccentric
• Number of Knockouts: 11
• Number of Outlets: 1
• Material: Pre-galvanized steel
• Color: Silver
• Cable Clamp Included: Yes, C-3 armored cable clamp
• Listing: UL E2969

Standard Information

• Brand: ABB INSTALLATION PRODUCTS
• Manufacturer Part Number: 52151 x