{"product_id":"siemens-jd3b350-circuit-breaker","title":"Siemens | JD3B350 | Circuit Breaker | 350A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens \u003cstrong\u003eJD3B350\u003c\/strong\u003e circuit breaker — a rugged, bolt-on protection device engineered for demanding industrial and commercial applications. Delivering \u003cstrong\u003e350A\u003c\/strong\u003e of current on a \u003cstrong\u003e3-pole\u003c\/strong\u003e configuration, this unit provides reliable overcurrent protection for essential feeders in 240V systems. Built for maintenance, retrofit, and replacement, it’s a dependable choice when panel compatibility and performance matter most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 350 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReference:\u003c\/strong\u003e JD3B350 is the best compatibility indicator\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBest applications:\u003c\/strong\u003e Maintenance, retrofit, or replacement in compatible Siemens panels\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters for your operation: the \u003cstrong\u003eJD3B350\u003c\/strong\u003e is purpose-built for panels designed to accommodate JD3B bolt-on breakers. Using the exact part number as your compatibility reference helps ensure proper bus connections, mounting fit, and electrical characteristics, delivering a smoother installation and minimizing downtime during upgrades or servicing.\u003c\/p\u003e \u003cp\u003eIdeal use scenarios include facility upgrades, spare-parts readiness for aging bolt-on families, and retrofit projects where a \u003cstrong\u003e350A, 3-pole\u003c\/strong\u003e solution is required in a \u003cstrong\u003e240V\u003c\/strong\u003e system. Whether you’re refreshing a critical feeder or replacing a failed unit, this breaker maintains the protection scheme you rely on in high-demand environments.\u003c\/p\u003e \u003cp\u003eCompatibility and installation notes:\u003c\/p\u003e \u003cul\u003e \u003cli\u003eBefore ordering, confirm that your panel accepts bolt-on JD3B-style breakers and that a \u003cstrong\u003eJD3B350\u003c\/strong\u003e reference matches the panel’s requirements.\u003c\/li\u003e \u003cli\u003eUse this unit when you need a direct, drop-in replacement or retrofit for 350A service with 240V capability in compatible Siemens lineups.\u003c\/li\u003e \u003cli\u003eRecord the part number as your primary compatibility reference to avoid mismatches with other JD3B variants.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose with confidence: Siemens engineering delivers consistent mechanical fit, reliable electrical performance, and long-term availability for the JD3B bolt-on family. The \u003cstrong\u003eJD3B350\u003c\/strong\u003e is more than a rating — it’s a practical, proven solution for safeguarding high-capacity circuits in busy, load-heavy environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427252392098,"sku":"JD3B350","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_ad06fdd7-931c-4a09-bfbe-d05329579cd6.png?v=1765492978","url":"https:\/\/www.ampstate.com\/products\/siemens-jd3b350-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}