CBus 4/8/12 channel relays

Could someone clear this up for me please?

Now I know a relay is a device for switching another independent circuit using an energised coil.

When I do my install, I will need some straight switching as a well as dimmers. My understanding was that the device you are switching is connected directly to the relay output unit, which also supplies the power to the device. I thought the relay was just internal mechanism used to switch the device circuit.

Am I correct in this, or does each device switched by a CBus relay also require an external power source?

Thanks

Dave.

 

think of it this way

The relay replaces the normal mech on the wall. you supply power to one side of the relay contact and the other is connected to the load (eg light). "Turning on" that channel will put power on to the load.

I suggest that you get on to the CIS site and download some of the manuals and other information there - you will get a lot of answers from them

Mick

 

Forgot you had to trawl the Aus site to find the installation docs!

Cheers, makes total sense - so the A line from the relay is to the switched load and the B line is the power in via its own MCB.

I'm gonna need a bigger DIN rail cabinet...

 

I do it the other way, A is line in and B is switched, but it does not matter as it is just a switch

Yep, bigger cabinet. CLipsal have just released this year some 15module wide cabinets with up to five rows, both flush and surface mount. Allows the MCB and MCB/RCD to reside next to the unit they are powering.

Mick