Skip to content

We will be closed from Wednesday 24th December 2025 until Friday 2nd January 2026. Any orders placed after 3PM on Tuesday 23rd December 2025 will not be processed until we reopen. Thank you for your continued support and we wish all our customers a very Merry Christmas and a Happy New Year!

MK

Numerous MK Residual Current Devices from the now discontinued “Sentry” range are available from Zetmet Limited. All RCD’s are designed to monitor the flow of electrical current through a circuit thereby providing protection against an array of faults.

Many of the products in our obsolete section are rare or discontinued. Therefore, stock levels can be extremely limited so act fast as once they’re gone they’re gone!