Eaton ENRB31201 M4 Receptacle Assembly - Group B Rating
Part Number: ENRB31201 M4
Quick Summary
Eaton ENRB31201 M4 receptacle assembly provides safe, reliable power connections for hazardous locations in industrial equipment. Facility operators struggle with robust terminations that meet strict ignition and exposure limits while minimizing maintenance. This unit carries NEC/CEC approvals, Hazardous/Classified Locations ratings, and NEMA compatibility (9, 3R, 3, 7, 12) for global deployment. Copper-free aluminum keeps weight manageable and corrosion resistance high, while 50–400 Hz compatibility broadens retrofit opportunities across plant fleets. Rated for Group B environments and a 1" trade size, ENRB31201 M4 integrates seamlessly with Ark-Gard ENR Premier systems. Designed for 125 Vac, 20 A service and 50–400 Hz operation, this receptacle supports pumps, motors, conveyors, and other critical equipment in hazardous zones. This combination supports faster installation, lower lifecycle costs, and safer operation in demanding environments.
Product Information
Extended Description
ENRB31201 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, Group B rating, Dead end, 1", 125 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENRB31201 M4
Product Length/Depth
6.5 in
Product Height
6.75 in
Product Width
6.88 in
Product Weight
13.8 lb
UPC
662276626256
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class II, Division 2 Class I, Division 1 Class I, Division 2 Class II, Division 1 Class III
NEMA Rating
9 3R 3 7 12
Number of gangs
Single-gang
Amperage Rating
20A
Voltage rating
125 Vac
Style
Dead end
Trade size
1"
NEMA configuration
5-20R
Cover type
Single
Material
Copper-free aluminum
Frequency rating
50-400 Hz
Special features
Group B rating
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Eaton Specification Sheet - ENRB31201 M4
Feature → Business Impact → Application: Hazardous-location construction provides robust ignition protection and compliant terminations, reducing incident risk and speeding regulatory audits. This translates to safer maintenance routines and predictable downtime in oil & gas, chemical processing, and mining applications. Feature → Business Impact → Application: Copper-free aluminum body delivers corrosion resistance with lighter weight, easing installation, reducing handling hours, and prolonging service life in harsh environments. This supports cost reduction over the asset lifecycle and simplifies logistics for field teams in remote plants. Feature → Business Impact → Application: 20A, 125 Vac electrical rating with 50–400 Hz frequency range enables universal compatibility across evolving equipment fleets, ensuring quick upgrades and reduced obsolescence in mixed-voltage facilities. Feature → Business Impact → Application: 1" trade size and single-gang, dead-end style offer compact, secure terminations in crowded enclosures, accelerating panel retrofits and minimizing panel space usage in hazardous locations. Feature → Business Impact → Application: Group B rating, NEC/CEC conformity, and NEMA compatibility (9, 3R, 3, 7, 12) deliver enterprise-grade compliance, lowering audit risk and supporting scalable deployments in global operations. Feature → Business Impact → Application: Ark-Gard ENR Premier integration enables rapid installation with proven safety margins, reducing maintenance time and improving uptime for critical equipment in hazardous zones.
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FAQs
Ensure the panel is rated for hazardous locations and compliant with NEC/CEC. Remove the existing cover, route conductors to the 5-20R terminals sized for 20A at 125 Vac, and secure the dead-end mounting with the single-gang enclosure. Verify copper-free aluminum body tolerances and torque specs per installation sheets, then test continuity and insulation before energizing. This approach minimizes hot-work risk and reduces commissioning time in harsh environments.
The device is a 20A, 125 Vac receptacle with a 50–400 Hz frequency rating and 1" trade size. It uses a 5-20R NEMA configuration, is single-gang, and features a copper-free aluminum body with a dead-end style cover. It is designed for Group B hazardous locations and aligns with NEC/CEC standards for safe operation in extreme environments.
Yes. The ENRB31201 M4 is built for hazardous/classified locations and carries NEC/CEC approvals alongside NEMA ratings suitable for oil, gas, and chemical processing environments. Its Ark-Gard ENR Premier lineage supports reliable, compliant terminations in flare, pump, and pump-skid applications, reducing ignition risks and helping facilities meet stringent regulatory requirements.
It features Hazardous/Classified Locations ratings, NEC/CEC compliance, and NEMA ratings including 9, 3R, 3, 7, and 12. The unit is built to Group B standards and is compatible with Ark-Gard ENR Premier systems. UL certification references are available in related documentation, confirming compliance for global hazardous-location deployments.
Expect reduced downtime due to proven hazardous-location protection and faster installation through single-gang, 1" trade-size design. Copper-free aluminum resists corrosion, lowering replacement costs, while NEC/CEC and NEMA compliance minimizes audit findings. Overall, lifecycle costs drop as maintenance cycles extend and equipment uptime improves in demanding industrial environments.