Overview
The Hubbell L620C is a professional-grade locking connector designed for industrial and commercial electrical applications. This 2-pole 3-wire connector delivers secure connections at 20A and 250V AC with a NEMA L6-20R configuration. Built for durability and rated for harsh environments, the L620C combines impact-resistant nylon construction with copper alloy contacts for dependable long-term service in heavy-duty settings.
Key Features
- NEMA L6-20R configuration ensures standardized twist-lock compatibility
- High-impact-resistant supertough nylon construction rated for industrial duty
- High-performance copper alloy contact for optimal signal conductivity and 3500-Volts dielectric strength per UL498
- Captive assembly screws make installation easier
- Nickel-plated, corrosion-resistant steel strap
- Accommodates wire of size 18-8 AWG
- UL listed and CSA certified
Technical Specifications
- Voltage Rating: 250V AC
- Current Rating: 20A
- Wire Accommodation: 18–8 AWG
- Temperature Rating: -40 to 60°C
- Dielectric Strength: 3500V per UL498
- Flammability: HB or better per UL 94 or CSA 22.2 No. 17
- Body Material: Impact-resistant nylon
- Contact Material: Copper alloy
- Grounding: Yes, 3-wire grounding conductor
- Terminal Type: Screw terminal with captive assembly screws
Typical Applications
Industrial and commercial environments requiring secure, polarized power connections. Commonly used for:
- Heavy-duty equipment and machinery
- Temporary power distribution in construction and events
- Generator power feeds and portable power systems
- Industrial HVAC and welding equipment
- Commercial kitchen and food service equipment
Compatibility & Replacements
Compatible With
- Any NEMA L6-20P (plug) or L6-20C (connector) configured electrical system or component
- Industrial equipment rated for 20A 250V twist-lock connections
- Generator outlets with L6-20P configuration
- Portable power distribution boxes and temporary power panels
Replaces / Drop-In Replacement For
- OEM Hubbell L620C units in existing installations
- Generic NEMA L6-20R connectors of equivalent specification
- Verify compatibility with your system integrator before ordering if replacing legacy equipment
Works With
- All standard 20A 250V twist-lock electrical systems
- Industrial power distribution equipment with L6-20 receptacles
- Portable generator extension cords and adapters rated for L6-20 configuration








