Eaton 657BLUE EMT Compression Connector - NEC/CEC
Part Number: 657BLUE
Quick Summary
EMT compression connector 657BLUE from Eaton provides secure, fast connections for straight EMT runs in industrial electrical wiring. Installers frequently confront mis-seated fittings and time-consuming threading; this straight, compression design minimizes misalignment and rework while speeding field assembly. The product aligns with NEC/CEC standards and is suitable for Ordinary/Non-Hazardous Locations, with UL certification supporting cross-border projects. By leveraging steel construction and a non-insulated design, it delivers robust grounding and long-term durability, while the blue color aids identification in complex panels. For engineers and procurement teams, 657BLUE offers reliable performance, easy stock management, and a proven component in the Crouse-Hinds series lineup.
Product Information
Extended Description
657BLUE Eaton: Eaton Crouse-Hinds series EMT compression connector, Blue, EMT, Straight, Non-insulated, Steel, Threadless, 3"
Product Name
Eaton Crouse-Hinds series EMT compression connector
Catalog Number
657BLUE
UPC
662277090551
Product Length/Depth
3.48 in
Product Height
4.47 in
Product Width
4.47 in
Product Weight
2.8 lb
Area classification
Ordinary/Non-Hazardous Locations
Standards type
NEC/CEC
Conduit type
EMT
Connector type
Straight
Style
Compression
Insulator
Non-insulated
Trade size
3"
Color
Blue
Thread
Threadless
Material
Steel
Eaton Crouse-Hinds 657BLUE 3D drawing
Crouse-Hinds series Connectors and Couplings - EMT catalog page
Connectors and Couplings - EMT Canadian certification
Connectors and Couplings - EMT Canadian certification
Eaton Specification Sheet - 657BLUE
Feature → Business Impact → Application: Compression, straight EMT connector design reduces installation steps and tooling time, delivering faster project turnaround and lower labor costs on dense electrical runs in manufacturing floors and commercial buildings. This security is enhanced by a threadless, non-insulated construction that avoids cross-threading issues and simplifies field assembly, improving first-pass integrity for 3" trade size EMT conduit runs. Application: Straight blue connector for standard EMT fittings in factory wiring closets and panelboards where quick, repeatable assemblies are essential. Feature → Business Impact → Application: Steel construction delivers durable mechanical strength and grounding continuity, reducing maintenance calls and extending service life in harsh environments typical of industrial facilities. Application: Medium-duty conduit networks carrying power and control wiring. Feature → Business Impact → Application: NEC/CEC compliance and UL Canada certification provide regulatory assurance, mitigating design or installation risk for cross-border projects and multi-site deployments. Application: Projects in North America requiring licensure-ready components. Feature → Business Impact → Application: Color coding (blue) and non-insulated profile simplify identification and inventory management, enabling faster QA checks and reduced miswiring in crowded panel assemblies. Application: Large electrical rooms and retrofits where quick identification saves time. Feature → Business Impact → Application: 3" trade size compatibility ensures consistent performance with standard EMT systems, supporting interchangeability with existing fittings and reducing part variety. Application: New construction and retrofit installations across industrial and commercial sectors.
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FAQs
657BLUE is an EMT straight compression connector designed for EMT conduit. It accepts a 3" trade size and is suited for ordinary/non-hazardous locations. The steel body, non-insulated design, and threadless connection streamline alignment with standard EMT fittings across commercial and light industrial projects.
Compression connections provide a secure grip with fewer parts and no threads, reducing assembly time and misalignment risk. This leads to faster field installs, fewer callbacks for tightening or rework, and improved grounding reliability—particularly advantageous in dense panel layouts or retrofit projects.
Yes. The connector is NEC/CEC compliant for use in Ordinary/Non-Hazardous Locations and has UL certification relevant to Canadian standards, supporting cross-border projects and multi-site deployments.
The 657BLUE is a steel, non-insulated, threadless straight connector in blue. The blue color aids identification in complex installations, while the steel construction provides robust durability and reliable electrical grounding.
Key benefits include reduced installation time and labor costs due to the compression, threadless design, and straightforward fit; improved reliability and lower maintenance from a durable steel non-insulated connector; compatibility with standard EMT fittings simplifies procurement and stock management, delivering tangible ROI in manufacturing and facilities environments.