Eaton ENRC21201 M4 GB Ark-Gard Premier receptacle Group B
Part Number: ENRC21201 M4
Quick Summary
Ark-Gard ENR Premier receptacle assembly from Eaton delivers rugged through-feed power in hazardous locations. In practical terms, installers often struggle with limited space, material compatibility, and complex compliance paperwork. This unit carries NEC/CEC approvals and hazardous-location ratings such as Class I, Division 2, Class II, Division 1, and Class III, with NEMA 3/7/12/9/3R compatibility. Coupled with a 20A, 125 VAC rating and copper-free aluminum construction, it reduces downtime, weight, and maintenance costs while supporting critical industrial processes. By selecting Ark-Gard ENR Premier, maintenance teams gain faster installation, better supply chain alignment, and traceable documentation. This translates to measurable uptime improvements and safer operation in demanding environments.
Product Information
Extended Description
ENRC21201 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, Through feed, 3/4", 125 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENRC21201 M4
Product Length/Depth
3.5 in
Product Height
6.75 in
Product Width
6.88 in
UPC
662276174283
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
Through feed
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 UL certification - ENR and ENP
Ark-Gard ENP, ENR, ENC Explosionproof NEMA Locking Devices UL certification - ENR and ENP
IF 1424 - DSD, GFS, CPS and ENR Replacement Covers
IF 1424 - DSD, GFS, CPS and ENR Replacement Covers
IF 1424 - DSD, GFS, CPS and ENR Replacement Covers
Eaton Specification Sheet - ENRC21201 M4
Feature through-feed design with 3/4" trade size and 125 VAC, 20A rating reduces wiring complexity and simplifies panel layouts, delivering faster installations and predictable service intervals in hazardous settings. Business Impact: lower installation labor hours, reduced field errors, and improved project scheduling for critical production lines. Application: oil and gas upstream facilities, chemical plants, and mining sites where space is constrained but reliability is essential. Feature copper-free aluminum construction lowers weight and corrosion risk compared with standard alloys, extending component life in offshore platforms and coastal facilities. Business Impact: longer service intervals, lower maintenance costs, and improved safe-handling in harsh environments. Application: marine terminals, wind and solar substations, and cathodic environments where material compatibility matters. Feature NEC/CEC compliance and hazardous-location ratings including Class I Division 2, Class II Division 1, Class III combined with NEMA 3/7/12/9/3R support. Business Impact: faster permit approvals, reduced engineering changes, and aligned regulatory documentation. Application: North American installations requiring strict safety compliance. Feature Group B rating and through-feed single-gang design optimize power distribution along equipment banks. Business Impact: clearer fault isolation and streamlined field wiring. Application: control panels and process lines in hazardous locations. Feature 50–400 Hz frequency range accommodates diverse power systems, ensuring reliable operation across regional grids. Business Impact: fewer equipment substitutions, better inventory control, and consistent performance. Application: mixed-plant environments with variable electrical demands. Feature 5-20R/NEMA configuration and locking mechanism provide universal compatibility with common plugs. Business Impact: lower spares costs and simplified maintenance procedures. Application: maintenance shops and field installations supporting standardized plug-in accessories.
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FAQs
The ENRC21201 M4 GB is a single-gang through-feed receptacle designed for 3/4" trade size wiring. It operates at 125 VAC and 20A with a frequency range of 50–400 Hz, making it suitable for hazardous-area installations. When wiring, follow Ark-Gard ENR Premier installation sheets for enclosure entry, sealing, and torque specs to maintain intrinsic safety and certification compliance.
A 50–400 Hz rating ensures compatibility with both standard and variable-frequency drive applications common in mining, chemical processing, and offshore facilities. This broad range supports reliable motor and loads operation without distress during harmonics or startup transients, reducing the likelihood of nuisance trips and associated downtime.
Yes. The device features NEC/CEC approvals and hazardous-location ratings including Class I Division 2, along with compatible NEMA ratings. Its copper-free aluminum body and Group B rating provide robust resistance to corrosive atmospheres while meeting Canadian and US regulatory requirements for offshore and other hazardous environments.
The receptacle assembly supports NEC/CEC compliance, hazardous-location classifications (Class I Division 2, Class II Division 1, Class III), and NEMA ratings 3, 7, 12, 9, and 3R. This combination ensures regulatory alignment for diverse industrial sectors and simplifies cross-border procurement and field approvals.
Through-feed, single-gang design reduces wiring complexity and device count, lowering installation time and labor costs. Copper-free aluminum minimizes weight and corrosion-related maintenance, extending service life in harsh environments. Together these factors translate to higher uptime, lower total cost of ownership, and a quicker return on investment for hazardous-location electrical installations.