Eaton 1657RT Raintight Compression Connector - EMT
Part Number: 1657RT
Quick Summary
1657RT is a raintight compression connector for EMT conduit used in harsh industrial electrical installations. It solves moisture intrusion and corrosion at joints by delivering a tight, seal-ready connection with no external threads. This straight, insulated steel connector is designed for durability in ordinary locations while aligning with NEC/CEC standards and UL certifications for reliable performance in regulated environments. By simplifying compression assembly, it reduces installation time and rework, helping maintenance teams keep outages brief. With compatibility to standard EMT fittings and a 3 inch trade size, it integrates smoothly into existing layouts while preserving enclosure integrity and overall system performance.
Product Information
Extended Description
1657RT Eaton: Eaton Crouse-Hinds series raintight compression connector, EMT, Straight, Insulated, Steel, Threadless, 3"
Product Name
Eaton Crouse-Hinds series raintight compression connector
Catalog Number
1657RT
UPC
784564004635
Product Length/Depth
5.8 in
Product Height
4.5 in
Product Width
6.5 in
Product Weight
2.34 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
EMT
Style
Compression
Connector type
Straight
Insulator
Insulated
Trade size
3"
Thread
Threadless
Material
Steel
Special features
Raintight
Crouse-Hinds series Raintight Connectors and Couplings - EMT catalog page
Raintight Connectors and Couplings - EMT UL certification
Raintight Connectors and Couplings - EMT UL certification
Eaton Specification Sheet - 1657RT
Feature: Raintight compression design creates a moisture-tight seal at the joint. Business Impact: Reduces ingress and corrosion risk, increasing enclosure reliability and lowering maintenance costs. Application: Ideal for damp or outdoor environments where EMT conduit interfaces with metal enclosures. This reduces field repair events and improves system uptime. Feature: Straight configuration with 3 inch trade size for EMT conduit. Business Impact: Simplifies alignment with standard runs and minimizes bending errors, accelerating installation. Application: Used in length-limited layouts and clean routing in control panels. Feature: Threadless, insulated steel construction. Business Impact: Eliminates exposed threads that can trap moisture while providing durable mechanical protection; enhances insulation continuity. Application: Suitable for quick, secure field assemblies in harsh settings. Feature: NEC/CEC compliance with area classification Ordinary/Non-Hazardous Locations. Business Impact: Eases regulatory approvals and safe operation in standard facilities; reduces risk of non-compliance penalties. Application: Appropriate for general industrial installations requiring vetted code adherence. Feature: Compatibility with existing EMT fittings and compression methods. Business Impact: Improves inventory management and reduces rework by using common components; supports scalable upgrades. Application: Works across multiple panels and distribution runs, enabling modular expansion. Industry context: Designed for electrical contractors and maintenance teams seeking reliability, code compliance, and straightforward installation in industrial automation environments.
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FAQs
The 1657RT is specifically designed for EMT conduit and uses a 3 inch trade size, making it a straightforward fit for standard electrical runs. Its threadless compression design provides a clean, seal-ready joint without external threads. This compatibility simplifies stocking and installation for typical industrial panel and conduit installations, reducing field adjustments and rework while maintaining secure electrical contact.
The 1657RT achieves raintight performance through a compression connection that seals against moisture ingress at the joint, aided by an insulated steel body. The mechanism compresses the conduit against a sealed insert, creating a tight, durable interface without exposed threads. This design enhances enclosure integrity in damp or humid environments and supports stable electrical conductivity over time.
This connector excels in ordinary, non-hazardous industrial locations where moisture protection and reliable conductor terminations are essential. It is well-suited for control panels, outlet boxes, and junctions exposed to moisture or wash-downs. Its 3 inch size supports moderate-length runs, while its steel, insulated body offers robust mechanical protection in rugged manufacturing settings.
The 1657RT complies with NEC/CEC standards, supporting code-conforming installations. It is used in ordinary/Non-Hazardous locations as an area classification, and UL certifications are available for EMT fittings in the United States and Canada. These certifications help ensure regulatory compliance, electrical safety, and reliability across generic industrial applications.
To maximize ROI, pair the 1657RT with compatible EMT fittings and use the compression method to minimize torque and rework. Verify clean conduit ends, proper alignment, and secure seating of the connector to maintain a moisture seal. Regular inspection during maintenance should focus on the seal integrity and enclosure connections to prevent corrosion and leakage over time.