Outdoor Rated In-Line RCD Protection Device

Stay protected wherever you plug in. The Masterplug ILRCDNG Inline RCD is a compact, weather-resistant safety device that cuts power instantly if a fault occurs. Ideal for garden tools, outdoor sockets, EV chargers, hot tubs, caravans, and motorhome hookup cables — it delivers full RCD protection without the bulky plug-top design.

Key Features

• 30 mA trip sensitivity with ultra-fast disconnection (< 40 ms typical) — helps prevent electric shock and fire risk
• IP65 weatherproof housing — dust-tight and resistant to water jets
• Manual reset safety — prevents automatic re-energising after power loss
• Bright power & fault indicators — clear visual feedback at a glance
• Inline installation design — fits neatly into existing cables with LINE and LOAD terminals

Technical Specifications

• Model: Masterplug ILRCDNG
• Type: Inline RCD Safety Adaptor
• Rating: 13 A / 240 V AC
• Trip Current: 30 mA
• Trip Time: < 40 ms (typical)
• Ingress Protection: IP65 (dust-tight and water-jet resistant)
• Standard: BS 7071 : 1992 compliant
• Installation: No cable supplied — can be wired onto 1.5 mm² Arctic-grade flex from our Cable Coils range to build a safe outdoor extension or tool lead
• Colour: Grey / Black

Why an Inline RCD Makes Sense

Standard plug-in RCDs are bulky and often won’t fit behind furniture or inside waterproof boxes. The ILRCDNG inline design lets you fit a slim UK 13 A mains plug at the end of your cable while placing the RCD unit further down the lead where there’s room. The result is a neat, professional finish that’s safer and more versatile.

Easy to Wire onto Existing Cables

This inline RCD must be wired directly into a cable using the clearly marked LINE and LOAD terminals. It’s ideal for retrofitting to an existing appliance lead — for example a hot tub, garden heater, caravan hookup, or motorhome cable that lacks RCD protection. It includes clear step-by-step instructions and screw terminals for simple installation using standard tools. Always ensure the appliance is unplugged and isolated before wiring.

MotorCables Tip

When installing this RCD, avoid loosening the outer cover screws too far — the tiny rubber washers beneath them maintain the IP65 seal. Losing those washers can compromise waterproofing. That’s why we test every unit before dispatch.

Typical Uses

• Lawnmowers, hedge trimmers & pressure washers
• Hot tubs, outdoor heaters & water features
• Caravan and motorhome hookup cables
• Portable EV chargers and Type 2 → CEE adapters
• Outdoor lighting, pond pumps & trailing socket extensions

For the ultimate weather protection, pair this inline RCD with a Masterplug WBX Weatherproof Box to keep your plugs and timers dry in all conditions.

Why Buy from MotorCables?

Every safety accessory we sell is tested and verified before dispatch. We stock genuine Masterplug products, heavy-duty Cable Coils, and professional-grade Trailing Sockets to complete your setup. Trusted by UK installers and EV owners — Plug and Play, No Delay.

Frequently Asked Questions

What does the Masterplug ILRCDNG Inline RCD do to protect me?

It continuously monitors the balance between live and neutral currents. If an earth leakage of around 30 mA is detected, it disconnects power within milliseconds to help prevent shock or fire.

Can the Masterplug ILRCDNG Inline RCD be wired onto existing cables?

Yes — it’s specifically designed to be wired inline onto existing leads, such as a hot-tub or caravan hookup cable that lacks RCD protection. The process is quick using the provided instructions.

Is the Masterplug ILRCDNG Inline RCD suitable for outdoor use?

Yes — it’s IP65-rated for dust and water-jet resistance, perfect for gardens, driveways and outdoor workshops.

Why is an inline RCD better than a standard RCD plug?

Inline RCDs let you fit a slim low-profile 13 A plug on the cable for tight spaces or weatherproof boxes, while keeping the safety module lower down the lead where space allows.

Do I need an electrician to install the Masterplug ILRCDNG?

The ILRCDNG is a true inline RCD that must be wired into a cable using the marked LINE and LOAD terminals — it is not a plug-in adaptor. Most competent users familiar with electrical wiring can fit it safely by following the included instructions. If you are unsure or lack experience with electrical terminations, consult a qualified electrician to ensure proper installation and testing.

Can it replace the RCD in my consumer unit?

No — it provides localised, point-of-use protection and complements fixed RCDs or RCBOs in your consumer unit.

Can I use it with EV charging leads?

No, it will not work on an Type 2 to Type 2 EV charging lead. but it adds an extra layer of protection for portable 13A EV chargers. Always check your charger’s documentation, as many already include internal RCD circuits.

Does the Masterplug ILRCDNG reset automatically after a power cut?

No — it features a manual reset mechanism to prevent accidental re-energising after a trip or power failure.

How often should I test the Masterplug ILRCDNG Inline RCD?

Press the TEST button before each use. If it fails to trip or reset, stop using immediately and replace the unit.

Disclaimer: All technical data, ratings, and compatibility information are supplied for guidance only. While every effort is made to ensure accuracy, HDIUK Ltd accepts no liability for minor discrepancies arising from manufacturing or specification changes.