Overview
The Hubbell EQCR1 is an industrial-grade locking receptacle designed for heavy-duty three-phase and DC power applications. This 4-pole 5-wire grounding receptacle delivers a maximum rating of 30 amps at 600 volts AC or 20 amps at 250 volts DC, making it suitable for demanding industrial environments including temporary power, generator connections, and high-current distribution. The receptacle features a rugged nylon housing with corrosion-resistant construction and screw-terminal connections for secure wire attachment.
Key Features
- 4-pole 5-wire grounding configuration ensures safe three-phase or DC power delivery
- Dual voltage rating: 30A at 600V AC and 20A at 250V DC capability
- Corrosion-resistant black nylon housing for harsh industrial environments
- Screw-terminal design accommodates #10 AWG through #6 AWG stranded copper wire
- Fully grounded design meets UL 498 terminal identification standards
- IP30 rated moisture resistance for general industrial protection
Technical Specifications
- AC Rating: 30A at 600V
- DC Rating: 20A at 250V
- Poles/Wires: 4-pole 5-wire with grounding
- Housing: Black nylon, thermoplastic interior
- Terminal Type: Screw terminal
- Wire Accommodation: #10 AWG to #6 AWG stranded copper
- Operating Temperature Range: -40°C to +75°C (maximum continuous)
- Moisture Resistance: IP30 suitability
- Flammability: UL 94 VO rated
- Standards Compliance: UL 498, Hubbellock industrial standard
Typical Applications
- Temporary power distribution and job-site electrical connections
- Generator and transfer switch receptacles for standby power systems
- Industrial equipment power feed and disconnect points
- Three-phase motor control and high-current distribution panels
- Outdoor and harsh-environment industrial installations requiring IP30 protection
- Emergency lighting and backup power systems
Compatibility & Replacements
Compatible With
- Hubbellock industrial male plugs (30A 600V AC / 20A 250V DC 4-pole configuration)
- Three-phase power systems rated 600V AC or less
- DC power systems operating up to 250V
- Temporary power distribution systems and industrial job-site equipment
- Standard electrical panels and disconnect cabinets with mounting provisions
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or electrical contractor before ordering, as receptacle interchangeability depends on mounting style, terminal type, and pole/wire configuration of existing installations.
Works With
- Hubbellock industrial male plugs and connector assemblies
- Standard #10 AWG to #6 AWG stranded copper wire
- Industrial electrical distribution and temporary power cords
- NEMA-compliant and IEC-standard panel-mount installations
