Orbit 4 in Square 1-1/2 in Deep 4S Square Steel Box 1/2 in and 3/4 in Knockouts 4SB-50/75

Product Overview

The Orbit 4SB-50/75 is a welded 4S square steel box for commercial switch, receptacle, fixture and junction-box rough-in. It measures 4 in by 4 in with a 1-1/2 in depth and provides 21 cu in of wiring volume.

Constructed from 16 GA galvanized sheet steel, the box includes 1/2 in and 3/4 in knockouts and is listed to UL and RoHS (UL File E227970). It is rated for dry locations.

Key Features

• 4 in square welded steel box, 1-1/2 in deep
• 21 cu in box volume for conductor fill calculations
• 1/2 in and 3/4 in knockouts
• 16 GA galvanized sheet steel construction
• UL and RoHS listings (UL File E227970); rated for dry locations

Function and typical uses

This 4S square box is intended for commercial switch, receptacle, fixture and junction-box rough-in where a 4 in square footprint and 1-1/2 in depth are specified.

Typical applications include new-construction wall and ceiling wiring and general commercial electrical work.

• Rough-in box for switches, receptacles and luminaires
• Commercial wall and ceiling wiring
• Suitable for new construction and maintenance stock

Materials, finish and construction

The box is fabricated from 16 gauge sheet steel with a galvanized finish and is manufactured using welded construction.

The galvanized finish provides general corrosion resistance appropriate for dry-location commercial installations.

• Material: 16 GA sheet steel
• Finish: Galvanized
• Manufacturing: Welded construction

Dimensions and box volume

Exterior footprint is 4 in wide by 4 in high with a depth of 1-1/2 in and an internal volume of 21 cubic inches.

Use the 21 cu in rating for conductor fill calculations to confirm compliance with applicable electrical code requirements.

• Overall dimensions: 4 in W x 4 in H x 1-1/2 in D
• Box volume: 21 cu in

Knockouts and wiring connections

The box includes 1/2 in and 3/4 in knockouts suitable for common conduit and connector sizes used in commercial wiring.

Confirm the required knockout pattern and connector types for your application prior to ordering.

• Knockouts: 1/2 in and 3/4 in

Certifications and location rating

The product is listed to UL and RoHS and is identified with UL File E227970. It is designated for dry location use.

Verify that these listings meet project or jurisdictional requirements prior to specifying.

• Certifications: UL, RoHS; UL File E227970
• Location rating: Dry location

Before you order

Confirm the model number, depth, knockout sizes, and 21 cu in volume match your project requirements.

Installation and any grounding or fixture support decisions must be handled by qualified electrical personnel.

• Confirm model: 4SB-50/75
• Check box-fill (21 cu in) against conductor counts
• Verify knockout sizes (1/2 in and 3/4 in) and required connectors

Before You Order

Confirm the model number and quantity required before ordering and ensure the depth, knockout pattern and 21 cu in box-fill meet your project's electrical code and application requirements.

Have qualified electrical personnel complete installation and any grounding or fixture-support decisions.

• Confirm model: 4SB-50/75
• Check box-fill (21 cu in) against conductor counts
• Verify knockout sizes (1/2 in and 3/4 in) and required connectors

Ordering from Lumera Electric

Check the purchasing options shown on the Lumera Electric product page for Orbit 4 in Square 1-1/2 in Deep 4S Square Steel Box 1/2 in and 3/4 in Knockouts 4SB-50/75. For project quantities or additional ordering requirements, use Request a Quote and provide the required quantity.