{"product_id":"oem-lennox-contactor-3-pole-120v-50a-77x59","title":"OEM Lennox Contactor 3-Pole 120V 50A — 77X59","description":"\u003cp\u003eThe genuine OEM Lennox \u003cstrong\u003e77X59\u003c\/strong\u003e is a three-pole contactor featuring a 120-volt control coil and a 50-amp per-pole rating. It serves as the primary switching device that energizes the compressor and outdoor fan across three legs of power in Lennox equipment using a line-voltage (120V) control circuit rather than the more common 24V.\u003c\/p\u003e\u003cp\u003eTypical failure symptoms include a loud buzzing or chattering from the coil, contacts that weld shut and leave the compressor running continuously, visibly pitted or burnt terminals, and a unit that fails to start. Because the \u003cstrong\u003e77X59\u003c\/strong\u003e uses a 120V coil, verifying the correct control voltage before replacement is essential — a 24V substitute will not pull in properly.\u003c\/p\u003e\u003cp\u003eUsing the OEM part guarantees the coil voltage, contact ratings, and three-pole layout match your Lennox system exactly. Generic contactors with the wrong coil voltage or amperage can cause failed starts, compressor stress, and premature burnout. This factory-spec \u003cstrong\u003e77X59\u003c\/strong\u003e ensures correct operation, proper fit, and full rated durability.\u003c\/p\u003e","brand":"Lennox","offers":[{"title":"Default Title","offer_id":63081081569651,"sku":"LNX-77X59","price":28.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0984\/1190\/5395\/files\/nhvac-contactor-3pole-LNX-77X59.jpg?v=1783759875","url":"https:\/\/nationalhvacparts.com\/products\/oem-lennox-contactor-3-pole-120v-50a-77x59","provider":"National HVAC Parts","version":"1.0","type":"link"}