In-Line RCD 16A Kaper (Without Plug) for Lay-Z-Spa, CleverSpa, MSpa & Intex Hot Tub Pumps

The In-Line RCD 16A Kaper (Without Plug) is a professional-grade residual current device designed specifically for use with inflatable and portable hot tub pump systems. Compatible with a wide range of leading spa brands including Lay-Z-Spa, CleverSpa, MSpa and Intex, this in-line RCD provides essential electrical protection for your hot tub setup without the need for a plug connection.

An RCD is a critical safety component in any hot tub electrical system. It continuously monitors the flow of electrical current and instantly disconnects the power supply if a fault or leakage current is detected — protecting both the user and the pump system from potentially dangerous electrical faults. For outdoor spa installations where water and electricity are in close proximity, a reliable in-line RCD is not optional — it is essential.

The 16A Kaper RCD is rated at 16 amps, making it fully compatible with the electrical demands of standard inflatable hot tub pump units. Its in-line design allows for straightforward integration into existing pump wiring without requiring a plug, offering flexibility for hardwired or customised electrical setups.

Key Features

• In-line RCD rated at 16A for hot tub pump systems
• Compatible with Lay-Z-Spa, CleverSpa, MSpa and Intex pumps
• Kaper-rated for reliable residual current protection
• No plug required — suitable for hardwired installations
• Essential electrical safety component for outdoor spa use
• Lightweight and compact design for easy installation
• Weight: 0.29kg | Dimensions: 32 x 16 x 7 cm

Compatibility

The In-Line RCD 16A Kaper is engineered to work seamlessly with the pump systems of the most popular inflatable hot tub brands on the market. Whether you own a Lay-Z-Spa, CleverSpa, MSpa or Intex hot tub, this RCD integrates directly into your existing electrical setup without the need for additional adapters or modifications.

Compatible with:

• Lay-Z-Spa hot tub pump systems
• CleverSpa inflatable spa pumps
• MSpa portable hot tub pumps
• Intex PureSpa and compatible pump units

Always verify your pump’s amperage rating and wiring configuration before installation. For a full range of compatible hot tub parts and accessories, visit bestway

Installation Guide

Installing the In-Line RCD 16A Kaper should be carried out with care to ensure safe and correct operation. If you are not confident working with electrical components, always consult a qualified electrician.

1. Disconnect your hot tub pump from the mains power supply before beginning.
2. Identify the correct inline position within the pump’s power cable for RCD installation.
3. Follow the wiring diagram and manufacturer instructions provided with the unit.
4. Secure all connections firmly and ensure no exposed wiring is present.
5. Reconnect the power supply and test the RCD by pressing the test button to confirm correct operation.
6. If the RCD does not trip during the test or fails to reset, do not use — consult a qualified technician.

Why Replace Your Old or Faulty RCD?

Over time, RCD units can degrade, become unreliable or fail entirely due to prolonged exposure to moisture, heat and general wear from outdoor use. A faulty or outdated RCD puts both your hot tub pump and personal safety at serious risk. An RCD that fails to trip during an electrical fault offers no protection whatsoever — making timely replacement absolutely critical.

Many older hot tub setups rely on RCDs that are no longer rated to current safety standards or have simply reached the end of their operational lifespan. Upgrading to the In-Line RCD 16A Kaper ensures your spa system meets modern electrical safety requirements while providing dependable protection for every use.

Replacing a worn RCD is one of the most cost-effective safety upgrades you can make to your hot tub setup — far more affordable than repairing pump damage caused by an undetected electrical fault.

For a full range of hot tub replacement parts and safety accessories, visit 365 Hot Tubs.