Description DWYER INSTRUMENTS pressure switch - cat no 1638 (I believe this is a 1638 - 0. Please see the photographs) max pressure 10psi surge pressure 25psi max temp 110F (43c) AWG Cu wire rated 140F (60c) min 15A, 125, 250, 480 VAC 1/8HP, 125VAC, 1/4HP, 250VAC
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