Southwire 657 ERC250 Direct Bury Compression Connector

Product Description

The SOUTHWIRE 657 is a direct bury compression connector designed for underground electrical splicing and termination applications. This fitting accepts ERC250-style cable and provides a secure, moisture-resistant mechanical connection suitable for direct earth burial without additional enclosures. The connector is sized for 2.5-inch compatible cable or conduit entry and weighs 13 pounds, indicating a robust construction intended for permanent installation. Licensed electricians and utility contractors install this type of fitting during underground feeder runs, service entrance work, and site distribution projects where exposed above-grade connections are not acceptable.

This connector is suited for direct bury electrical installations in residential, commercial, and light industrial applications. It is commonly used on underground service conductors, feeder extensions, and branch circuit runs where the splice must remain protected from soil moisture and mechanical disturbance without a separate junction box. The ERC250 designation identifies cable compatibility, making this fitting appropriate for use with corresponding aluminum or copper underground conductors of the specified size class.

Key Features

• Direct bury rated construction for below-grade splice and termination applications
• ERC250 cable compatibility for precise mechanical fit and reliable conductor retention
• 2.5-inch form factor for use with appropriately sized underground cable
• Compression-style installation provides a tamper-resistant, gas-tight mechanical connection
• Substantial 13-pound unit weight reflects heavy-duty materials suited for permanent burial

Compatibility

Designed as an OEM-style direct bury compression fitting for use with ERC250-class underground electrical cable in standard below-grade wiring installations.

Installation Notes

Installation must be performed by a licensed electrician in accordance with applicable NEC requirements for underground wiring methods. De-energize and lock out the circuit completely before making any splice or termination. Use the correct compression tool specified for the connector series to achieve the proper crimp profile. Do not substitute with non-rated fittings or attempt installation above the minimum burial depth required by code for the conductor type and location.

Technical Specifications

• Cable Compatibility: ERC250
• Connection Type: Direct Bury Compression
• Size: 2.5 inches
• Weight: 13 pounds
• UPC: 75133816650

Standard Information

• Brand: SOUTHWIRE
• Manufacturer Part Number: 657