United Electric Controls UE United Electric 8521 F300-7BS Temperature Switch, 0-400 deg F, NEMA 4X UE United Electric 8521 F300-7BS Temperature Switch, 0-400 deg F, NEMA 4X - UE United Electric 8521 F300-7BS Temperature Switch, 0-400 deg F, NEMA 4X Housing, SPDT, With Armored Thermocouple - United... Add to Wishlist