Eaton Crouse-Hinds ENRC21151 M4 Receptacle Assembly - Hazardous/Classified Locations
Part Number: ENRC21151 M4
Quick Summary
The Eaton Crouse-Hinds ENRC21151 M4 Receptacle Assembly is a hazardous-location power outlet solution for demanding industrial environments. When uptime matters, maintenance delays or noncompliant components can trigger costly downtime and safety concerns. This unit carries NEC/CEC compliance with Class I, Division 1 and Division 2 ratings, Class II, Division 1 and Division 2, and Class III, along with NEMA 3, 3R, 7, 9 and 12 envelopes for versatile global installations. Designed as part of the Ark-Gard ENR Premier family, it combines copper-free aluminum construction with a through-feed wiring approach for fast, reliable field deployment. With a 125 Vac, 50–400 Hz rating and a compact single-gang footprint, it simplifies procurement and standardizes hazardous-location power connections across mixed-use facilities.
Product Information
Extended Description
ENRC21151 M4 Eaton Crouse-Hinds: Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly, 15A, Single, 50-400 Hz, Copper-free aluminum, 5-15R, Single-gang, Through feed, 3/4", 125 Vac
Product Name
Eaton Crouse-Hinds series Ark-Gard ENR Premier receptacle assembly
Catalog Number
ENRC21151 M4
Product Length/Depth
6.78 in
Product Height
6.75 in
Product Width
3.5 in
Product Weight
0.999 lb
UPC
662276174405
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
15A
Voltage rating
125 Vac
Style
Through feed
Trade size
3/4"
NEMA configuration
5-15R
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 - ENRC21151 M4
Feature: Copper-free aluminum construction provides corrosion resistance and reduced weight. Business Impact: Longer service life in harsh environments reduces replacement costs and maintenance intervals. Application: Offshore platforms and chemical plants requiring durable enclosure materials. Feature: Through-feed design minimizes wiring complexity and speeds up installation. Business Impact: Lower labor hours and quicker commissioning, improving project ROI. Application: New-builds and retrofit projects in hazardous locations where fast turnarounds matter. Feature: 15A 125 Vac rating supports common instrumentation and control loads. Business Impact: Safe, code-compliant power distribution with predictable performance. Application: Single-gang outlets serving control panels and process equipment in Class I/II/III zones. Feature: NEMA 3/3R/7/9/12 compatibility ensures outdoor and rugged indoor use. Business Impact: Broad environmental protection and reduced need for multiple device variants. Application: Outdoor enclosures, marine installations, and industrial facilities with harsh exposure. Feature: Ark-Gard ENR Premier family compatibility and 3/4" trade size. Business Impact: Seamless integration with existing Ark-Gard components and standard conduit packs, lowering procurement complexity. Application: Hazardous-area power distribution networks requiring standardized components. Feature: 6.78 in L Ă— 6.75 in H Ă— 3.5 in W footprint and 0.999 lb weight, single-gang, 5-15R configuration. Business Impact: Manageable install footprint with predictable enclosure space planning and reduced handling effort. Application: Receptacle assemblies in compact control panels and through-feed termination points.
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FAQs
Follow the installation instructions for ENRC21151 M4, including the IF 1588 series sheets and the through-feed wiring method. Ensure proper enclosure selection, grounding, and correct raceway fittings. Use compatible Ark-Gard ENR components and observe Class I/II/III zoning requirements. This minimizes ignition risk and guarantees compliant, reliable operation in hazardous areas.
The receptacle assembly carries NEC/CEC compliance with hazardous-location ratings including Class I Division 1 and Division 2, as well as Class II and Class III. It is listed with NEMA ratings 3, 3R, 7, 9, and 12, ensuring suitability for both indoor and outdoor hazardous environments and marine installations.
Yes. The ENRC21151 M4 is specified for 50–400 Hz operation at 125 Vac, making it compatible with a wide range of industrial controls, instrumentation, and automation equipment that operate outside the standard 50/60 Hz range.
The receptacle assembly measures 6.78 in long, 6.75 in high, and 3.5 in wide, with a weight of approximately 0.999 lb. It is designed for single-gang mounting with a 3/4" trade size, enabling straightforward integration into standard electrical boxes and through-feed conduits.
Choosing ENR Premier through-feed receptacles delivers improved reliability, reduced maintenance, and consistent performance across hazardous locations. The copper-free aluminum construction resists corrosion, while the dense NEMA protection and robust certifications support longer service intervals and lower total cost of ownership in demanding industries.