Appleton 31-400 Malleable Iron Compression Conduit Connector 4 in

Product Description

The APPLETON 31-400 is a 4-inch malleable iron compression conduit connector designed for secure, reliable conduit terminations in electrical installations. This connector uses a compression-style fitting to create a firm mechanical connection between conduit and an enclosure, box, or panel knockout. Malleable iron construction provides durability and resistance to mechanical stress in demanding environments. Licensed electricians and electrical contractors install this type of connector in commercial, industrial, and heavy-duty residential applications where a robust conduit termination is required.

The 31-400 is suited for use in conduit systems requiring a 4-inch compression-style connector. It is commonly installed where rigid or IMC conduit terminates at junction boxes, panelboards, enclosures, or other electrical equipment. The compression design allows for installation without threading tools, making it practical in tight or time-sensitive installation scenarios. This connector is appropriate for both new construction and retrofit conduit work handled by qualified electrical tradespeople.

Key Features

• 4-inch trade size for large-diameter conduit terminations
• Malleable iron construction for strength and impact resistance
• Compression-style fitting for secure mechanical connection
• Compatible with standard knockout openings in electrical enclosures and panels
• Suitable for commercial and industrial conduit installations

Compatibility

Designed as an OEM-style replacement or new-installation compression conduit connector for 4-inch conduit systems in commercial and industrial electrical applications.

Installation Notes

Installation should be performed by a licensed electrician in accordance with applicable NEC requirements. De-energize and lockout the panel or enclosure before beginning conduit termination work. Ensure the knockout opening is clean and free of burrs before seating the connector. Do not overtighten the compression nut, as this may distort the fitting or damage the conduit.

Technical Specifications

• Trade Size: 4 inches
• Material: Malleable Iron
• Connection Type: Compression
• UPC: 78312673990

Standard Information

• Brand: APPLETON
• Manufacturer Part Number: 31-400