UPDATE:
There are more of you inquiring about several C30 contactors, so I went down to the local company to see if I could obtain anymore. The service dept stated they wont have any available for several months, but are in the process of disassembling a couple of prototype panels and will have 100-C23-D10 and 100-C23-D01 for purchase tomorrow. These are rated for RESISTIVE CURRENT 32 AMPS, they are 3 pole, 110v coil, and have a bonus auxiliary contact. The 100-C23-D10 has a normally open contact and the 100-C23-D01 has a normally closed contact. These would be perfect for use with a 5500w or less heating element. For those of you that purchased C30's, they will ship on Monday. If you want to swap out C30's for a C23's let me know before then. The C23's are the same price. I picked up 10 of these for now, but if I get an increased interest in these I can get more.
http://www.1sourcedist.com/woe/ProductDetail.aspx?ProductId=288