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I came across this appliance today. SC for the electric heat comes in from underground and into this box and then on to the 100A 240V electric heat panel (separate SC for the house electrical). My question is, what is this brown box I'm looking at? I see it reads "Arrow Heat" model E on the left side, but I cannot identify it. Do any one of you what this appliance is?

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I believe it says, "Arrow Hart," which is a manufacturer of electrical equipment.

What you've got there is a magnetic contactor. It's designed to control heavy motor or heating loads but instead it's being used as a very expensive splice block.

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Could this be used for some sort of pump motor? I admit I have not seen this set up before. I was originally thrown off by the SC for the electric heat (just seeing it in the box). Panel had a breaker for the well pump, so this does not serve the well pump or sump. I could not find any other motor or device that might need this. Any thoughts?

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