A/C Clutch cycling

So I have a 1968 Barracuda with factory air, but I've transplanted a Sanden 508 style pump in place of the RV2 compressor, everything else is stock. When I have the push button controls on the inside set to the "off" position, is it normal for the compressor to still cycle on and off??? Mine does, but I would have thought that everything would be off in the off position.

Anyone know if this is normal?

Thanks