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ZSI3.3/2-B-1335 is an electrical relay manufactured by the Electroswitch company, a subsidiary of Espee. It is a CA3-3/2 Form C, multi-contact, electromechanical relay. It features an isolated coil design and has a normally open contact configuration with three NO contact ratings of 3A, 500VAC, 0.5 HP (3-3/4 AMP), 120VAC, 1/4 HP; and one common contact rating of 3A, 125VAC. The relay has brass-plated contacts for increased corrosion resistance and silver-plated spades for electrical reliability. It also comes with a silver-plated spring and a zinc-plated steel housing for durability. The relay's maximum ambient operating temperature is +60°C. This ZSI3.3/2-B-1335 relay is UL and CSA certified.