Cutting relay pins : good idea?

Question

I tried a new PCBA factory for one of my boards design with an order of 200 PCS. I didn't notice my BOM had two references for the same Finder relay on same line. Until now, I was lucky enough for my other PCBA factory to order the right reference but this one ordered the wrong reference.

So now they are offering me two options :

• Cutting the 3 last pins of the relay which don't fit on my board
• Ordering 200 relays (but with the recent outbreak of Coronavirus, it will add up to 45 days for the production to be finished + additional 10-15% of total paid price)

As the wrong relay is a changeover one and my boards stay most of the time "open", the cut pins will have a voltage applied on them and some traces are just below. So I don't think it's a good idea to do this. But as it will add lead time + costs, I want to be sure.

The right reference is :

• Finder 62.23.9.012.0300

Wrong one (on pictures below) :

• Finder 62.23.9.012.0000

These relays make contact for 230VAC 3-phases voltage. We use them with up to 10A currents.

Here's the part of the design concerned :

Answer 1

If they have the same current rating, I would cut them. Further, if the potential of the most upper trace is not 230VAC, I would add a piece of Kapton tape (or Koptan).

Answer 2

I had a similar situation I used a Dremel tool die grinder to trim the pins then used fiberglass tape used in motor and transformer winding applications on my board.

My situation was the relay I first used was no longer available and I had to use the closest thing to it that I could find.