Latching (Passive) and Non-Latching (Active) RCD Sockets

RCD Sockets - The Difference Between Latching and Non-Latching

Latching RCD (Sometimes called Passive)

When the power is lost due to an earth fault, the RCD trips out and isolates the circuit it is protecting. Latching RCDs do trip during power cuts but they automatically reset once the power returns, so they are great for fridges and freezers and also for protecting remote/unmanned areas. This would also make them ideal for protecting some heating equipment set to "Frost Protection", fish tanks and battery charging.

Use Latching (Passive) RCD Sockets For:

  • Refrigeration
  • Frost watchers
  • Aquariums
  • Chargers
  • Remote installations
  • Most commercial applications

Non-Latching RCD Sockets (Sometimes called Active)

When the power is lost due to earth fault or power cut, the RCD isolates the circuit that it is protecting and remains off until it is manually reset. A must for protecting circuits supplying rotating machinery or some heating apparatus for example.

Use Non-Latching RCD Sockets For:

  • Garden tools
  • Power tool
  • Domestic applications
  • Nurseries
  • Schools
  • Hospitals
  • Old peoples homes

Safety Doesn't Have to be Ugly - Fancy RCD Sockets

RCD sockets are also available in decorative plate options to compliment your interior design. You can even have flat plate rather than standard plate RCD sockets if you're trying to match the rest of your home wiring accessories. The usual, comprehensive range of finishes will still be available to you.

Extra Protection Outside - Waterproof RCD Sockets
One of the most popular areas that you're most likely to want RCD protection (non-latching), would naturally be outside. Outdoor RCD sockets up to a protection rating of IP66 are readily available. It's easy to ensure that no-one will be using the mower, strimmer, leaf blower, hedge trimmer, paddling pool pump etc unprotected from the potential earth faults.
Timeguard RCD Products

MK RCD Products