MECMO 30A Twist-Lock RV Shore Power Inlet NEMA L5-30P - Flanged Lockable 125V, Weatherproof

MECMO's 30 Amp twist-lock shore power inlet is a weatherproof, ETL-listed NEMA L5-30P flanged male plug designed to replace worn 30A locking receptacles on RVs, boats, and trailers for secure, corrosion-resistant shore connections.

Whether replacing a damaged inlet or upgrading to a more durable shore power connection, this MECMO locking connector delivers a compact, flanged installation that keeps moisture and dust out while providing a dependable 30A/125V feed. Built with an impact-resistant, UV-stable housing and nickel-plated pins, it withstands marine and outdoor exposure. The design fits standard 2-11/16" cutouts and accepts 8–10 AWG copper conductors for straightforward wiring.

How does this inlet keep shore power dry and corrosion-free?

The MECMO inlet combines a flanged base with an integrated sealing gasket and a threaded weatherproof cover that mates to the L5-30 collar. When locked, the connection seals out moisture, dust, and salt spray to protect internal contacts and wiring.

• Integrated rubber gasket eliminates need for external caulking.
• Threaded cover mates to connector collar and twists to lock for a watertight seal.
• Nickel-plated pins resist corrosion from salt and humidity.

Is this shore power inlet durable enough for marine and RV use?

This inlet is engineered for outdoor and marine environments with UV-resistant, flame-retardant housing and an impact-resistant shell. The cover opens 180° and stays put so it won’t press on the cord, reducing wear during use.

• Flame-retardant, impact-resistant construction for long-term service.
• UV-resistant housing prevents sun degradation on exposed installations.
• 180° cover retention prevents strain on plugged cords and connectors.

What electrical ratings and certifications matter for safety and performance?

The MECMO inlet is ETL listed and rated for 30 amps at 125 volts (3,750 watts), supporting common RV and marine loads like air conditioners, microwaves, and battery chargers without derating. Clear terminal markings simplify correct wiring for safe operation.

• ETL listed for compliance with electrical safety standards.
• 30A / 125V rating suitable for standard 30-amp RV shore power systems.
• Accepts 8–10 AWG copper conductors and fits standard cutouts.

How easy is this inlet to install or replace?

Designed as a direct replacement for worn L5-30 locking receptacles, the flanged inlet installs into standard 2-11/16" openings and uses clearly marked terminals for straightforward wiring. The unit ships ready to mount and seals without additional caulk, speeding up field or shop replacements.

• Fits common 2-11/16" cutouts used on RVs and boats.
• Terminals marked for hot, neutral, and ground make wiring intuitive.
• Flanged mount and gasket remove the need for extra sealants.

Who is this for? Technicians, DIY RV owners, boaters, and trailer operators looking for a reliable, weatherproof 30A shore power inlet will benefit from MECMO’s locking L5-30P design. It’s ideal when you need a direct-fit replacement with marine-grade corrosion resistance, ETL safety certification, and a tidy, sealed installation that minimizes maintenance over time.