How make mechanical interlock in LV Switchgear

The term "mechanical interlock" is too vague, you need to describe exactly what you want to do.

But from what I could see, this is an isolating switch. So do you mean that you have two switches and you want a mechanical link that prevents one from being closed if the other one is on? Or do you mean you want to mechanically interlock the two switches to that they operate together? In either case the people to ask would be LeGrand, and the catalog page I could see gave no indication of such an accessory.

Now please remit $50 US for my on-line preliminary research fee. I do accept PayPal.

Call a Legrand Tech Rep on the telephone and make an enquiry regarding a "Kirk Key" (otherwise know as a Trapped Key Interlock) type set up.

While waiting on hold read this.

_{You still owe JR a $50 US consultation fee}

Learned something new today.

I have FOREVER referred to what I now know to be "trapped key interlocking" as "Kirk Key" interlocking. However Kirk Key is a brand name and thus technically not generic. I now know, thatks to you, that there is a generic term for it.

You can have half of whatever research fee I receive.

In the UK it would be a Castell or Fortress key. The one problem with Castell was the ease of making a master key, I've had a couple of them for the last 20+ years.

Glad to have enlightened

One type is a simple slide bar with notches in it, spaced differently from the switch handles. To close one switch, a notch must be above the handle. For that to happen, the other switch(es) must be open so that the bar can be slid into position.

Write to manufacturer or local agent to get configurations of mounting(side by side or one above another,distance between etc) and get an interlock from them. If you can,make one