Wiring replacement AC contactor
Here's a link to the datasheet. The full part number will identify which one you have:
http://www.alliedelec.com/m/d/772fae44f4baf4fd6f22e9b824e60f47.pdf

I had to do some googling myself to ensure that the "T" side is the LOAD. The "L" side is your Line end.