{"product_id":"westinghouse-nby3700-circuit-breaker","title":"Westinghouse | NBY3700 | Circuit Breaker | 700A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered by Westinghouse, the NBY3700 circuit breaker is a robust solution for protecting large electrical circuits in commercial and industrial panels. With a demanding 700A rating, this 3-pole unit delivers reliable overcurrent protection for high-load environments. Designed for bolt-on installation, it provides a secure, field-serviceable option for maintenance, retrofit, or replacement projects.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 700A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference:\u003c\/strong\u003e NBY3700\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Westinghouse NBY3700 stands out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic breakers, the NBY3700 is built for demanding environments where durability and reliability matter. The bolt-on design ensures a solid mechanical connection, reducing loosening risk under vibration and electrical load. The 700A rating protects large feeders and motor circuits without nuisance tripping in normal operation, while the 3-pole configuration provides synchronized protection for all three phases—critical in balanced polyphase systems.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance, retrofit, or replacement in existing panels that require 700A, 3-pole, 600V protection\u003c\/li\u003e \u003cli\u003eIndustrial machinery feeders and large motor circuits\u003c\/li\u003e \u003cli\u003eCommercial building main distribution and subfeed protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eAlways confirm fit and ratings before ordering. The NBY3700 is referenced by part number as the best compatibility guide with compatible Westinghouse panels and bolt-on frames. When selecting a replacement, verify the panel’s bus bar arrangement, mounting footprint, and voltage rating align with 600V and 3-pole configuration.\u003c\/p\u003e \u003ch3\u003ePractical considerations and tips\u003c\/h3\u003e\n\u003cp\u003eFor long-term reliability, ensure clean, secure connections and follow proper torque specifications for bolt-on breakers as per your panel manufacturer’s guidelines. Keep spare units on hand for critical feeders to minimize downtime during maintenance windows.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Westinghouse","offers":[{"title":"Default Title","offer_id":46427171061922,"sku":"NBY3700","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/westinghouse-nby3700-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}