Eaton Crouse-Hinds ENRCB21202 M4 Receptacle Assembly - Group B rating

Part Number: ENRCB21202 M4
Eaton Crouse-Hinds logo
Manufacturer
Eaton Crouse-Hinds
Part number
ENRCB21202 M4
Category

Quick Summary

Eaton Crouse-Hinds ENRCB21202 M4 Receptacle Assembly provides rugged, explosion‑proof power interface for hazardous-area equipment. In complex facilities, engineers wrestle with safe wiring, sealing integrity, and reliable through-feed connections in Class I and II locations. It carries NEC/CEC compliance, Hazardous/Classified Locations area classification, and a Group B rating, reinforced by a NEMA suite including 3, 3R, 7 and 12. With a 20A, 250V rating and copper-free aluminum enclosure, it simplifies installation and reduces maintenance while delivering durable performance in demanding environments. Designed for single-gang mounting and 6-20R configuration, this unit supports fast, through-feed connections with a 3/4" trade size, helping streamline panel design and minimize field demurrage.

Product Information

Extended Description

ENRCB21202 M4 Eaton Crouse-Hinds: Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly, 20A, Single, 50-400 Hz, Copper-free aluminum, 6-20R, Single-gang, Group B rating, Through feed, 3/4", 250 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENRCB21202 M4
Product Length/Depth
6.5 in
Product Height
6.75 in
Product Width
6.88 in
Product Weight
6.8 lb
UPC
662276630529
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class III Class I, Division 1 Class I, Division 2 Class II, Division 2 Class II, Division 1
NEMA Rating
3 9 3R 7 12
Number of gangs
Single-gang
Amperage Rating
20A
Voltage rating
250 Vac
Style
Through feed
Trade size
3/4"
NEMA configuration
6-20R
Cover type
Single
Material
Copper-free aluminum
Frequency rating
50-400 Hz
Special features
Group B rating
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 344 - Ark-Gard ENR Receptacles ENP Model M97 Plugs IF 344 - Ark-Gard ENR Receptacles ENP Model M97 Plugs IF 344 - Ark-Gard ENR Receptacles ENP Model M97 Plugs Eaton Specification Sheet - ENRCB21202 M4
Copper-free aluminum enclosure provides excellent corrosion resistance and lighter weight without compromising strength, boosting service life in offshore and chemical processing plants while reducing total cost of ownership. This through-feed receptacle simplifies wiring layouts, enabling faster panel assembly and cleaner terminations, which translates into shorter installation times and fewer field faults. The 6-20R NEMA configuration supports reliable plug-in power for critical equipment, with a 250 Vac, 20A rating that aligns with common industrial loads. The Ark-Gard ENR Premier design delivers robust protection against hazardous environments, improving safety and ensuring compliance with NEC/CEC standards and area classifications. Its single-gang footprint and 3/4" trade size optimize panel real estate and simplify upgrades or retrofits in dense electrical closets. Compatibility with the Ark-Gard family minimizes spare-lug requirements and speeds maintenance tasks by using familiar accessory sets.

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FAQs

The ENRCB21202 M4 is designed for hazardous/classified locations with a Group B rating and NEC/CEC compliance. It supports single-gang mounting, a 3/4" trade size, and a 6-20R configuration, making it ideal for through-feed installations in Class I/II environments. It pairs with Ark-Gard ENR Premier receptacles for consistent enclosure and wiring standards.
Key specs include a 20A amperage rating, 250 Vac voltage rating, frequency rating of 50-400 Hz, and a 6-20R NEMA configuration. The unit uses copper-free aluminum and supports through-feed wiring in a single-gang footprint, with a 3/4" trade size that matches common conduit fittings and panel cutouts.
Yes. Its hazardous-location certification, Group B rating, and Ark-Gard ENR Premier design are well-suited for oil and gas, chemical processing, and offshore platforms. The copper-free aluminum enclosure offers corrosion resistance, while the through-feed capability simplifies rugged installations, reducing maintenance downtime in harsh environments.
The unit complies with NEC/CEC standards, features Hazardous/Classified Locations area classifications, and carries NEMA ratings including 3, 3R, 7, and 12. It is designed for single-gang installation with a 6-20R NEMA configuration and a Group B rating, aligning with industry practice for hazardous-area power distribution.
The design emphasizes durability with a copper-free aluminum enclosure and a robust through-feed connection approach, reducing field maintenance and rework. Its compatibility with the Ark-Gard ENR Premier family streamlines spare parts and replacements, delivering lower lifecycle costs, faster fault isolation, and improved system uptime in demanding industrial environments.