Linear safety switch

[Rachie5272]

I'm trying to figure out what a particular type of switch is called, and where to find it.  It's a long thin strip, 1-2 cm wide, maybe 5 mm thick, and often a meter or two long.  It's typically mounted on the perimeter of heavy machinery as a safety cutoff switch.  If someone bumps into it, the machine power is cut.

Mechanically, it's something like a venetian blind: a long curved piece of metal which deforms to contact a flat piece of metal.

Does anyone know what this is?

[helius]

One vendor calls them ribbon safety switches.
https://www.tapeswitch.com/Info/Catalogs/Switch_v3.0.pdf