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[Lifetime Warranty] NEMA 14-30P 14-50P Plug Interchangeable Straight

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NEMA 14-30P 14-50P Plug Interchangeable Straight

Key Features

  • Interchangeable design for NEMA 14-30P or NEMA 14-50P configurations.
  • Dual electrical rating: 30 Amps at 125/250 Volts and 50 Amps at 125/250 Volts.
  • Configuration: 3-Pole, 4-Wire, Grounding Type.
  • Terminal design accepts copper wire gauges from #10 AWG to #6 AWG.
  • Heavy-duty thermoplastic housing for impact resistance.
  • Internal cable clamp provides secure strain relief.
  • Solid brass blades for optimal conductivity.

Replaces / Cross-Reference Part Numbers

  • Pass & Seymour 3867
  • Serves as a replacement for most commercial and industrial grade 30A and 50A straight blade plugs from brands such as Leviton, ELEGRP, and STARELO.
  • Direct replacement for any plug with NEMA 14-30P or NEMA 14-50P specifications.

Compatibility & Fitment

  • Connects to NEMA 14-30R (30A) or NEMA 14-50R (50A) receptacles.
  • For use with 30-amp, 4-wire dryer cords or 50-amp, 4-wire range and generator cords.
  • Suitable for high-power applications including electric vehicle (EV) chargers, electric ranges, dryers, welders, and generators.

When to Replace

  • Visible damage such as cracks, chips, or broken housing.
  • Signs of overheating, including discoloration or melted plastic.
  • Blades are bent, loose, or show signs of corrosion or arcing.
  • Plug fits loosely into the receptacle, causing intermittent power.

Installation Tips

  • Disconnect power at the circuit breaker before installation.
  • Verify the plug configuration (30A or 50A) matches the appliance requirements and wall receptacle.
  • Strip wire insulation according to the gauge strip guide on the device.
  • Connect wires to the clearly marked terminals: Green to Ground (G), White to Neutral (W), Black and Red to Hot (X, Y).
  • Tighten terminal screws to the manufacturer's recommended torque specification.
  • Secure the cord with the internal strain relief clamp to prevent stress on terminal connections.
  • Consult a qualified electrician if you are unfamiliar with electrical wiring.
  • INTERCHANGEABLE PLUG DESIGN

    INTERCHANGEABLE PLUG DESIGN

    Easily switch between NEMA 14-30P and NEMA 14-50P plugs as needed for different power requirements
  • CERTIFIED MATERIAL

    CERTIFIED MATERIAL

    Built with solid brass blades and PA66 Nylon shell, offer corrosion-proof and impact-resistant properties.
  • SAVING SOLUTION

    SAVING SOLUTION

    BlueStars brings DIY solutions to help you deal with any trouble.
  • EASY TO INSTALL

    EASY TO INSTALL

    Replacing a Straight Blade Angle Plug with a 4-wire design is straightforward, requiring just a screwdriver and pliers.
CONNECTING LIVES, ENERGIZING MOMENTS

CONNECTING LIVES, ENERGIZING MOMENTS

BlueStars - #1 source of high-quality electrical parts
NEMA
14-30P/14-50P
Ampere
30A/50A
Voltagen
125/250 Volt
Operating Temperature
-40°C to 60°C
Terminal Accept
10 to 6 AWG

FAQ

This interchangeable plug allows you to convert a NEMA 14-30P or 14-50P configuration, providing flexibility for connecting heavy-duty appliances like electric dryers or ranges to different outlet types without needing to replace the entire cord end.
You will need a standard Phillips head screwdriver to open the housing and a flathead screwdriver to secure the wire terminals. A wire stripper is also recommended to ensure a clean, proper connection to the internal terminals.
This plug is designed for standard 4-wire appliance cords. Ensure your cord has four individual conductors (typically red, black, white, and green) before beginning the installation. It is not compatible with older 3-wire systems.
You should replace the plug if you notice visible signs of melting, charring on the prongs, loose connections that cause intermittent power, or if the plastic housing has become brittle or cracked from heat exposure.
Always ensure the circuit breaker is turned off at the main panel before working on the cord. When stripping the wires, ensure you do not nick the copper strands, as this can create a high-resistance connection that leads to overheating.