[zizzer]

Anyone else notice that in the Tyco contactor picture it's labelled "Coil 3.14 Ohms"? It makes me think they only needed it to be 3 Ohms, but an engineer somewhere couldn't resist making it πΩ

[lotsofmangos]

It might be to normalise other components to nice units, given that pi turns up when calculating the inductance of a coil.