{"product_id":"jb21500smw-circuit-breaker","title":"JB21500SMW | Circuit Breaker | 150A | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eThe JB21500SMW is a rugged industrial circuit breaker designed to deliver reliable 3‑phase protection for demanding electrical systems. Built for maintenance, retrofit, and replacement projects, it provides a precise 150A rating in a 3‑pole configuration on a 240V network, making it a ready-made upgrade or component for existing panels that require this exact specification.\u003c\/p\u003e \u003ch2\u003eKey specifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 150A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Industrial power distribution, three‑phase protection, retrofit and replacement projects\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eWhat sets the JB21500SMW apart\u003c\/h2\u003e\n\u003cp\u003eThis part is defined by its exact compatibility footprint. The JB21500SMW is the most reliable reference for matching your panel and feeder specifications, reducing guesswork during replacement. Its 3‑pole design is tailored for three‑phase systems, ensuring balanced protection across all phases and safeguarding motors, drives, and other heavy loads from overcurrent events in industrial environments.\u003c\/p\u003e \u003ch3\u003eWhy professionals choose it\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecision compatibility:\u003c\/strong\u003e The part number JB21500SMW serves as the key indicator for ensuring the correct mounting, bus connections, and electrical characteristics in compatible equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eFocused performance:\u003c\/strong\u003e With a 150A rating, it’s well-suited for mid‑to‑large feeders and motor circuits that require solid overcurrent protection without oversizing the protective device.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePractical retrofit option:\u003c\/strong\u003e When upgrading older systems or replacing worn components, this breaker provides a straightforward path to restore reliability while aligning with existing 240V, three‑phase infrastructure.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eIdeal use scenarios\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eRetrofits in legacy switchboards or motor control centers that previously relied on less capable or mismatched protective devices.\u003c\/li\u003e \u003cli\u003eNew installations where a dedicated 3‑pole, 240V breaker is required to protect three‑phase feeders feeding large machines, conveyors, or HVAC equipment.\u003c\/li\u003e \u003cli\u003eReplacement of failed breakers in industrial settings where panels, wiring, and safety standards are built around a 150A, 3‑pole protection scheme.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eInstallation and compatibility considerations\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eVerify fit and ratings before ordering:\u003c\/strong\u003e The notes specify confirming fit and ratings to ensure compatibility with your panel, bus layout, and rated voltage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference the part number for cross‑checking:\u003c\/strong\u003e The JB21500SMW is the most reliable reference when matching against OEM manuals or panel specifications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSystem alignment:\u003c\/strong\u003e Ensure your electrical system is configured for 240V and uses a three‑pole breaker for proper three‑phase protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eWiring and safety considerations:\u003c\/strong\u003e Confirm conductor sizes and protection requirements align with the 150A rating, and follow standard installation practices for industrial breakers to maintain compliance and safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDocumentation and standards:\u003c\/strong\u003e Adhere to local electrical codes and the equipment manufacturer’s instructions during installation and commissioning.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor professionals who demand dependable, purpose-built protection in 240V three‑phase networks, the JB21500SMW delivers a precise, compatible solution for maintenance, retrofit, and replacement projects. Its clear compatibility reference and focused amperage\/voltage specification help you avoid unnecessary substitutions and keep critical equipment safe. Add this 150A, 3‑pole breaker to your order to ensure consistent protection across your industrial electrical system.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46426159022242,"sku":"JB21500SMW","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/jb21500smw-circuit-breaker-150a-3-pole-240v-633.webp?v=1789524282","url":"https:\/\/www.ampstate.com\/products\/jb21500smw-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}