Free and available to all electricians - find the information you need, digital tools to support your business and more.Electrician portal
New, connected, and future ready.Are you ready?
Browse our catalogue of over 200 FREE e-learning courses.Start learning today
Access tailored services, 24/7 self-service and expert help. Anywhere, anytime, any project.Discover now
Receive all the latest updates, news, and offers via Twitter.Follow us on Twitter
Schneider Electric United Kingdom Website×
Explore our global offerings or select your country from one of our five regions.Global
Découvrez nos offres globales ou sélectionnez votre pays dans l’une de nos cinq régions.
Part numbers CA2DK122, CA2DK22 and CA3DK22 referred to latching contactor relays in the old contactor relay range, which have now been replaced.
They consisted of two N/C contacts and two N/O contacts and two coils, A and E. A pulse on A energised the contactor and a second pulse on E de-energised the contactor.
There is no direct substitution, but there is a complementary solution using CAD control relays:
The solution is to combine two products, a control relay CAD32xx and a latch block LAD6Kxx
(where xx is the control voltage code)
A pulse on the contactor coil terminals A1 and A2 causes the contactor to close.
Mechanical latching of the LAD6Kxx keeps the contactor closed.
A pulse on the coil of the LAD6Kxx, terminals E1 and E2, opens the contactor.
The duration of the control pulse on the mechanical latch block and the contactor must be:
>= 100 ms for AC control
>= 200 ms for DC control