Eaton ENR21201 M4 Explosionproof Receptacle Assembly - Hazardous Locations
Part Number: ENR21201 M4
Quick Summary
ENR21201 M4 Explosionproof Receptacle Assembly from Eaton Crouse-Hinds provides safe, reliable power connections for hazardous-area equipment in chemical plants, offshore platforms, and mining operations. In harsh environments, downtime from corrosion, dust ingress, or incompatible fittings drives maintenance costs and unplanned outages. This unit carries NEC/CEC compliance with Hazardous/Classified Locations, Class I Division 1 and Division 2, Class II Division 1 and 2, and Class III, reinforcing safety and longevity. With copper-free aluminum construction, 20A at 125 Vac, and a single-gang, 3/4 inch trade size, it delivers robust performance while keeping installation straightforward for plant electricians and procurement teams.
Product Information
Extended Description
ENR21201 M4 Eaton Crouse-Hinds: Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly, 20A, Single, 50-400 Hz, Copper-free aluminum, 5-20R, Single-gang, Dead end, 3/4", 125 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENR21201 M4
Product Length/Depth
6.78 in
Product Height
6.75 in
Product Width
3.5 in
Product Weight
1 lb
UPC
662276173859
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
NEMA Rating
3 3R 7 9 12
Number of gangs
Single-gang
Amperage Rating
20A
Voltage rating
125 Vac
Style
Dead end
Trade size
3/4"
NEMA configuration
5-20R
Cover type
Single
Material
Copper-free aluminum
Frequency rating
50-400 Hz
Ark-Gard ENR Premier Explosionproof NEMA Locking Devices catalog page
Ark-Gard ENP, ENR, ENC Explosionproof NEMA Locking Devices Canadian certification - ENR and ENP
Ark-Gard ENP, ENR, ENC Explosionproof NEMA Locking Devices Canadian certification - ENR and ENP
IF 1588 - ENR M4 Series Receptacles
IF 1588 - ENR M4 Series Receptacles
IF 1588 - ENR M4 Series Receptacles
Eaton Specification Sheet - ENR21201 M4
Feature: Copper-free aluminum housing provides excellent corrosion resistance and lighter weight compared to traditional copper-bearing alloys. Impact: longer service life in aggressive environments reduces maintenance cycles and total cost of ownership. Application: chemical processing plants, offshore platforms, and mining sites where continuous operation is critical. Feature: Explosionproof enclosure with NEC/CEC compliance and recognized hazardous location ratings. Impact: regulatory alignment lowers commissioning risk and streamlines safety audits. Application: retrofit and new-build projects in hazardous locations requiring dependable protection. Feature: Single-gang, 3/4 inch trade size with 5-20R configuration and 20A at 125 Vac. Impact: standard plug compatibility and straightforward wiring speeds installation, minimizes field wiring errors. Application: control panels and plug-in power distribution in compact enclosures. Feature: Frequency rating of 50-400 Hz supports diverse power systems, including VFD-driven equipment. Impact: ensures reliable operation across motor control and generator setups. Application: sites with variable-frequency drives and multi-system power demands. Feature: Ark-Gard ENR Premier lineage paired with NEMA ratings 3, 3R, 7, 9, 12. Impact: enhanced protection against dust, water ingress, and explosive atmospheres. Application: hazardous area power distribution and enclosure assemblies. Feature: Documentation and installation resources (IF 1588, catalog pages, data sheets) facilitate compliance, training, and fast troubleshooting. Impact: reduces field callouts and accelerates maintenance windows. Application: operations with strict downtime budgets and formal audit requirements.
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FAQs
ENR21201 M4 is designed for use in Class I and II hazardous locations with NEC/CEC compliance and multiple NEMA ratings (3, 3R, 7, 9, 12). It supports a single-gang, 3/4 inch trade size, 20A at 125 Vac, and a 50-400 Hz range, making it suitable for chemical plants, offshore platforms, and mining applications requiring reliable, explosionproof power receptacles.
This receptacle assembly meets NEC/CEC standards for Hazardous/Classified Locations, with NEC ratings including Class I Division 1 and Division 2, Class II Division 1 and Division 2, and Class III. It also aligns with NEMA ratings 3, 3R, 7, 9, and 12, ensuring broad regulatory acceptance and safe operation in demanding environments.
The copper-free aluminum housing reduces weight and corrosion risk, easing handling during installation and lowering maintenance costs over time. Its 3/4 inch trade size and 5-20R configuration simplify wiring and plug compatibility, while documented installation sheets and catalogs accelerate setup, audits, and ongoing servicing in rugged facilities.
Yes. The ENR21201 M4 is rated for 50-400 Hz, supporting diverse power systems including generators and motor drives. This flexibility helps maintenance teams consolidate spares and specifications, reducing complexity when integrating with existing equipment in hazardous locations.
Technical datasheets and installation instructions are available through Eaton’s Ark-Gard ENR Premier resources, including the Ark-Gard ENR Premier catalog page, IF 1588 instruction sheets, and the ENR Specification Sheet. These documents provide wiring diagrams, mounting guidance, and compliance documentation to streamline procurement and field work.