MK Sentry K5716S - RCD 16A Type AC 230V - Double Pole 30mA Circuit Breaker

Good product at a fair price, looks well made

Simple standard 16A RCD fitted, tested, works fine. Does what it says on the box.

straight replacement for another make breaker , which i could not get hold of any longer

Looks to be good quality fitting was fine and works as expected. Used to upgrade wiring to a solar array due to tripping problems and has worked without issue since fitting.

Ok