Component identification, possibly 'transformer switch'

AI Thread Summary
The discussion revolves around identifying a component in a spa heater's electrical control box, suspected to be a transformer or switch due to its coil and additional nodes. The user could not find information using the part numbers and considered the possibility of it being a relay or contactor for the pump and heater element. A suggestion was made that it might be a "Hartland Controls series HCC contactor," providing links for further information. The user confirmed that it indeed appears to be a contactor and expressed gratitude for the clarification. Understanding the role of contactors in the system was a key takeaway.
preston8
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I am in the process of reverse engineering an electrical control box for a spa heater, and have stumbled upon a component that I have not encountered before.

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There are two of these components in the system. I was not able to find any information from the part numbers. The coil leads me to believe that this is a transformer. The additional nodes on the sides and the position within the system also lends to a type of switch. Is there such thing as a transformer switch?
 
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Might be relays (contactors) for the pump and the heater element...?
 
Indeed it appears to be a "contactor". I understand what role they play in this system now, thank you.
 

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