Eaton ENRB11201 M4 Receptacle Assembly - Group B
Part Number: ENRB11201 M4
Quick Summary
Eaton Crouse-Hinds ENRB11201 M4 explosionproof receptacle assembly safely connects equipment in hazardous locations. Access to dependable, codes-compliant wiring in tough environments is a persistent challenge for engineers. It meets NEC/CEC standards and hazardous-location ratings (Class I, Division 1 and 2; Class II; Group B), supporting safe, compliant operation in oil, gas, chemical processing, and marine applications. Designed for Ark-Gard ENR Premier families, this single-gang, 1/2 inch trade size receptacle offers a robust dead-end configuration with copper-free aluminum construction. By pairing 20 A at 125 Vac with a 5-20R configuration, it minimizes wiring complexity while enabling quick field replacements and reduced downtime, improving overall maintenance ROI.
Product Information
Extended Description
ENRB11201 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, 1/2", 125 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENRB11201 M4
Product Length/Depth
6.78 in
Product Height
6.75 in
Product Width
3.5 in
Product Weight
7 lb
UPC
662276432437
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
1/2"
NEMA configuration
5-20R
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 UL certification - ENR and ENP
Ark-Gard ENP, ENR, ENC Explosionproof NEMA Locking Devices UL 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 - ENRB11201 M4
Copper-free aluminum enclosure provides lighter weight and superior corrosion resistance, reducing installation effort and long-term maintenance costs. In hazardous locations, the combination of low weight and robust enclosure improves vibration tolerance and durability in salt- and chemical-exposed environments. This makes the ENRB11201 M4 ideal for offshore platforms, chemical plants, and mining sites where corrosion resistance and dependable performance are essential. 20A at 125 Vac with a 5-20R configuration delivers compatible power distribution for standard industrial plugs, simplifying wiring in control panels, machine enclosures, and field retrofits. The single-gang, 1/2 inch trade size dead-end design reduces panel Real Estate requirements and speeds field replacements, lowering downtime during maintenance. Group B rating and NEC/CEC compliance provide strong regulatory alignment, supporting safe operation in demanding installations and enabling smoother procurement. Ark-Gard ENR Premier compatibility and accessible installation documentation shorten onboarding, while documented catalog pages and UL certifications reduce risk during audits. NEMA ratings 3, 3R, 7, 9, and 12 further reinforce reliability across environments such as marine, mining, and energy facilities. In practice, installers gain faster commissioning, technicians experience simpler maintenance, and plant managers see improved uptime and lower total cost of ownership.
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FAQs
Install in accordance with NEC/CEC guidelines for hazardous locations, using approved mounting surfaces and sealing methods. The ENRB11201 M4 supports surface or single-gang mounting with a 1/2" trade size and dead-end configuration. Ensure proper torque on mounting screws, use approved wiring methods, and protect conductors from physical damage. Verify compatibility with existing Ark-Gard ENR Premier accessories.
Key specs include 20A amperage, 125 Vac, frequencies from 50–400 Hz, copper-free aluminum housing, 1/2" trade size, and 5-20R NEMA configuration in a single-gang form. Ratings cover Class I, Division 1 and 2, Class II Division 1 and 2, and Class III with Group B protection, complying with NEC/CEC and NEMA standards.
Yes. The unit’s Group B rating and Ark-Gard ENR Premier lineage are designed for hazardous environments common in offshore platforms and marine facilities. Its copper-free aluminum enclosure offers corrosion resistance, while NEC/CEC compliance and NEMA ratings support safe operation in salt spray, humidity, and dynamic vibration typical of marine applications.
The receptacle assembly meets NEC/CEC standards and hazardous-location certifications, including Class I Division 1 and 2, Class II Division 1 and 2, and Class III ratings, plus NEMA ratings 3, 3R, 7, 9, and 12. UL listings for Ark-Gard ENR Premier confirm compliance, aiding audit readiness and procurement confidence.
Durability comes from a copper-free aluminum enclosure that resists corrosion and heat, lowering replacement cycles. The compact single-gang design simplifies field swaps and reduces wiring complexity, cutting maintenance labor and downtime. Combined with extensive documentation and compatibility, this translates to lower total cost of ownership and faster return on investment in harsh facilities.