how to wire a 445 switch tower

[gwg50]

I went to olsen's but the image came out as x's can anyone tell me how to wire it. Thanks Gary

[lionelsoni]

I would connect terminal 1, which is the frame of the thing, to an accessory voltage, terminal 3 to common, and terminal 2 to an isolated control rail.  This has the advantage of not needing a contactor, but the disadvantage of having the building "hot".

The alternative is to connect terminal 1 to common, 3 to accessory voltage, and 2 to accessory voltage through a contactor.

[gwg50]

Thanks Bob that got me going. I appreciate your help Thanks. Gary