{"product_id":"westinghouse-br390st-90a-3p-240v-circuit-breaker","title":"Westinghouse BR390ST 90A 3P 240V Circuit Breaker, Type BR, Shunt Trip | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Westinghouse BR390ST is a rugged, high-capacity circuit breaker designed for dependable protection in panelboards, load centers, and electrical distribution systems. With a 3-pole configuration, 90 A rating, and 240 V operation, it delivers reliable overcurrent protection while giving you the option of remote control through its built-in shunt trip.\u003c\/p\u003e \u003ch2\u003eKey features that matter in real-world setups\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eType BR, 3-pole, 90 A, 240 V\u003c\/strong\u003e — a compact, unitized solution built for standard Westinghouse\/BR panelboards and compatible distribution boards.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eShunt Trip\u003c\/strong\u003e — enables remote tripping for safe, fast responses from building automation systems, alarm panels, or safety interlocks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement-ready\u003c\/strong\u003e — ideal for projects that require BOM alignment with the original part number, ensuring seamless upgrades or spares stocking.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer support\u003c\/strong\u003e — backed by Westinghouse engineering lineage, ensuring consistent performance and compatibility within BR-series ecosystems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability\u003c\/strong\u003e — offered by AmpState, with assistance available to confirm fit and compatibility if you’re matching a part number to your current setup.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this 90A BR390ST matters for your electrical system\u003c\/h3\u003e\n\u003cp\u003eWhen safety and reliability are non-negotiable, remote trip capability can be a lifesaver—especially in facilities with centralized safety automation or centralized shutdown workflows. The BR390ST couples heavy-duty protection with the convenience of a shunt-trip accessory, making it easier to integrate into larger control schemes without sacrificing standard overcurrent protection.\u003c\/p\u003e \u003ch3\u003eIdeal use cases and who benefits most\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFacility maintenance and reliability engineers\u003c\/strong\u003e seeking a dependable spare that perfectly matches original BOM parts for quick field replacement.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eElectrical contractors\u003c\/strong\u003e working on panelboard retrofits or replacements where a BR-type, 3-pole, 90 A device is specified.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eData centers and industrial environments\u003c\/strong\u003e needing remote trip capability to align with safety interlocks and centralized control systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNew installations\u003c\/strong\u003e requiring a proven, compatible 3P 240V protection device with remote trip functionality.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance and tips\u003c\/h3\u003e\n\u003cp\u003eUse BR390ST when your electrical design calls for a standard BR-frame breaker with remote trip capability. Confirm that your panelboard or load center supports a BR-series device and that the outgoing wiring and bus configurations are compatible with a 3-pole, 90 A, 240 V circuit. If you’re aligning with an original part number for BOM consistency, this model is specifically intended to keep procurement aligned with the source specification.\u003c\/p\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer\u003c\/strong\u003e: Westinghouse\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number\u003c\/strong\u003e: BR390ST\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: BR\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage\u003c\/strong\u003e: 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpecial feature\u003c\/strong\u003e: Shunt Trip\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability\u003c\/strong\u003e: AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eNeed help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit, ensuring you get the exact BR390ST you need for reliable, code-compliant circuit protection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412543590562,"sku":"BR390ST","price":819.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/westinghouse-br390st-90a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}