EV Charging 20 Amp 5 Pin 3 Phase Socket to 20 Amp 3 Pin Round Single Phase Plug

EV Charging Adapter – 20A 5 Pin Socket to 20A 3 Pin Round Plug (Single Phase Supply)

Power 5-Pin Equipment from a Standard 20A Single-Phase Outlet

This adapter is designed to allow equipment fitted with a 5-pin (3-phase style) plug to be powered from a 20A 3-pin single-phase outlet, provided the equipment only requires single-phase supply.

It is particularly useful for EV charging setups where a 5-pin connection is used for compatibility or flexibility, but the charger itself operates on single-phase power only.

What This Product Actually Does

The adapter features:

• 20A 3-pin plug (input) – connects to a standard single-phase outlet
• 20A 5-pin socket (output) – accepts a 5-pin plug

Internally, it supplies:

• Active (L1), Neutral, and Earth
• The remaining phases are not energised

This means the connected device receives a correct single-phase supply via a 5-pin interface.

Why This Is Used in EV Charging

Some EV charging setups — including certain portable chargers and adapters — use 5-pin plugs for broader compatibility across 3-phase infrastructure, even when they only draw single-phase power.

A common example:

• A Tesla Gen 2 Mobile Connector paired with a 5-pin adapter head
• Designed to draw from L1 (single phase)
• But physically fitted with a 5-pin plug for site flexibility

In situations where only a 20A 3-pin outlet is available, this adapter allows that setup to be used without issue.

Key Features

3-Pin to 5-Pin Interface

Allows a standard 20A single-phase outlet to supply equipment fitted with a 5-pin plug.

Correct Single-Phase Configuration

Delivers power through L1, Neutral, and Earth, ensuring compatibility with devices designed for single-phase operation.

Maintains Equipment Compatibility

Enables continued use of 5-pin configured charging equipment across sites with different outlet types.

Practical and Versatile

Ideal for environments where available power sources vary and adaptability is required.

Typical Use Case

You have a charger or device fitted with a 20A 5-pin plug, but it only requires single-phase power.

At your location, only a 20A 3-pin outlet is available.

Without this adapter:
The equipment cannot be connected.

With this adapter:
You can safely supply the unit using standard single-phase power.

Compatibility

• 20A 3-pin round single-phase outlets (AS/NZS 3112)
• 20A 5-pin plugs (AS/NZS 3123) used on single-phase equipment
• EV chargers and devices that utilise only one phase (L1)

Electrical Considerations

• This adapter does not provide 3-phase power
• Only one active (L1) is connected
• Suitable only for equipment designed to operate on single-phase supply via a 5-pin plug

Always ensure the connected device does not require multi-phase input.

Why Resource Electrical

Resource Electrical approaches these products from a practical electrical perspective — ensuring compatibility, correct configuration, and reliable operation in real-world conditions.

What You Get

• 1 x 20A 3 Round Pin Plug to 20A 5 Pin Socket Adapter
• Ready for immediate use

Upgrade your charging setup

This adapter is a simple but highly practical solution for maintaining compatibility between 5-pin configured equipment and single-phase power sources.

It allows you to use your existing setup without limitation when only a 3-pin outlet is available — provided the equipment is designed for single-phase operation.