Overview
The Cooper Wiring Devices 1877B-BOX is a commercial specification-grade single straight-blade receptacle designed for industrial, commercial, and professional electrical installations. This 2-pole, 3-wire unit delivers rated performance at 20 amperes, 125 volts AC with a NEMA 5-20R configuration. Built for durability and code compliance, the 1877B is a standard choice for retrofit and new construction projects requiring reliable screw-terminal outlets.
Key Features
- Side-wired screw terminals accept #14 to #10 AWG solid or stranded wire
- Triple wire line contacts provide excellent long-term plug retention and consistent electrical contact
- Arc-resistant nylon face with PVC insulated bottom housing
- Brass contacts ensure corrosion resistance and reliable performance
- Brown color for easy identification in commercial applications
- Automatic grounding system eliminates need for bonding jumper in metal enclosures
Technical Specifications
- Amperage Rating: 20A
- Voltage Rating: 125V AC
- Number of Poles: 2 Pole
- Number of Wires: 3 Wire (Grounded)
- NEMA Configuration: NEMA 5-20R
- Connection Type: Side-wired screw terminals
- Wire Size: #14–10 AWG
- Contact Material: Brass
- Face Material: Nylon
- Bottom Material: PVC
- Mounting Type: Flush wall mount
- UL/CSA Standards: UL 498, Federal Specification WC-596, CSA C22.2
- Color: Brown
- Receptacle Type: Single, grounding
Typical Applications
Commercial and industrial facilities requiring reliable, code-compliant power distribution include:
- Retrofit installations in commercial office buildings and retail spaces
- Manufacturing and warehouse facilities requiring 20A 125V receptacles
- HVAC and mechanical equipment connections
- Panel-mount applications with accessible, easy-to-wire screw terminals
- Installations requiring NEMA 5-20R compatible outlets per NEC standards
Compatibility & Replacements
Compatible With
- Standard commercial and industrial electrical panels
- 20A circuit breakers and protection devices
- NEMA 5-20P plugs and compatible power cords
- Twisted-pair and stranded copper wire (#14–10 AWG)
- Metal junction boxes and switch enclosures
Replaces / Drop-In Replacement For
The 1877B-BOX directly replaces earlier versions and identical Cooper Wiring Devices single receptacles with the same NEMA 5-20R footprint and electrical rating. Verify specific part cross-references with your supplier or system integrator before ordering for mission-critical applications.
Works With
- All NEMA 5-20R compliant power cords and equipment plugs
- Standard commercial wiring practices (NEC Article 406)
- Grounding systems in metal enclosures and junction boxes
- Automatic grounding architecture for redundant ground continuity
