The Self Switching Automatic Dual Charge Relay is an essential upgrade for any caravan or motorhome, designed to seamlessly switch power from your vehicle to your caravan without the need for manual input or complex wiring.
This voltage-sensing relay automatically monitors power availability from your car’s battery and alternator, engaging only when the system is ready. It eliminates the need for a separate signal wire, making it a straightforward and reliable power management solution for touring setups.
Price: £21.99Price (inc VAT): £26.39
Reliable and Intelligent Power Switching
The Self Switching Automatic Dual Charge Relay intelligently monitors voltage levels and automatically switches power when your tow vehicle’s alternator is providing sufficient current. This ensures your caravan’s battery is charged only when conditions are optimal, preventing unnecessary drain on your vehicle’s electrical system.
With a factory-set adjustable voltage trip and narrow hysteresis band, it provides accurate performance with minimal fluctuations, helping to maximise charging efficiency and protect both power sources during operation.
Compact, Durable and Easy to Install
Designed with convenience in mind, this unit uses **DIN rail mounting** and supports both **quick-connect and screw terminals**, offering flexible installation options in tight caravan or campervan electrical bays. No additional control wiring is needed, which makes retrofitting much simpler compared to traditional split-charge systems.
The unit features a rugged casing and **over-temperature protection**, ensuring long-lasting performance even in demanding touring conditions. Its **30 Amp continuous switching capability** supports most dual battery setups with ease.
Technical Specifications
- Contact Type: 2NO 2NC (Normally Open / Closed)
- Contact Material: Silver Alloy
- Connector Type: Quick Connect & Screw Terminals
- Continuous Current Rating: 30A
- Mounting Type: DIN Rail
- Self-switching relay with built-in voltage sensing
- Over-temperature protection for added safety
Ideal for Touring and Off-Grid Adventures
Whether you're installing a new caravan electrical system or upgrading an old one, the Self Switching Automatic Dual Charge Relay offers peace of mind and ease of use. With no need for a separate ignition feed and intelligent automatic switching, it’s the perfect fit for modern leisure vehicles that demand efficiency and safety.
Used widely in campervan conversions, tow vehicle setups, and dual battery systems, it’s a trusted solution for anyone serious about reliable mobile power.
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0300 124 6982
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info@thehappycamperstore.co.uk