Wiring – Muller TC 24.21 Timer Wiring Help

timerwiring

A very basic question. I've just bought a digital time switch model TC 24.21 from Muller. According to the back of the timer it takes 230V~50-60Hz, and I'm a bit stuck exactly how and what to connect the timer up to to get it working.

All I'm trying to do at the moment is connect up the timer so the front turns on. I'll worry about the relay wiring once I've gotten that sorted.

Here is a picture of the back.

Back of the timer

I presume I need to connect the L (live?) terminal to the positive terminal of the power source and the N (neutral?) terminal to the negative terminal of the power source, but I'm stuck with what power source to use? I can't safely plug it into mains power?

Datasheet is here: http://www.hugo-mueller.de/download/39_DB_TCx4_en.pdf

Best Answer

The datasheet clearly says "Supply Voltage 230 V, 50/60 Hz", so I would connect a 230 V "Hot' wire to the "L" terminal, and the neutral wire to the "N" terminal. The timer would connect terminal 1 or 3 to L, depending on the state of the timer, so you would connect your 230 volt load between either 1 or 3 and N.

It appears that you can connect a switch between L and Ext to start/stop the timer.

With luck, there should be a more detailed user manual included with the timer.