{"product_id":"siemens-ld63b350-circuit-breaker","title":"Siemens | LD63B350 | Circuit Breaker | 350A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens LD63B350 circuit breaker—a purpose-built safeguarding solution for demanding electrical systems. With a robust 350A current rating and a 3-pole configuration, this device provides dependable protection for multi‑phase circuits in commercial and industrial environments. Designed for maintenance, retrofit, and replacement projects, it’s built to slot into compatible panels with confidence and precision.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 350A\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\u003ePart number:\u003c\/strong\u003e LD63B350\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRecommended use:\u003c\/strong\u003e maintenance, retrofit, and replacement to match original specs\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens circuit breaker stands out\u003c\/h3\u003e\n\u003cp\u003eThe LD63B350 is purposefully designed to align with Siemens’ LD63 series standards, offering reliable trip protection across large, three‑phase feeders. Its 350A rating makes it suitable for substantial loads without sacrificing protection, while the 3-pole design ensures coordinated disconnection across all phases. This isn’t a generic substitute—it's a precise, compatible replacement that preserves the performance and safety expectations of your existing panel.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing aged main or branch breakers in commercial\/industrial panels that require 350A capacity\u003c\/li\u003e \u003cli\u003eRetrofit projects where exact LD63B350 specifications guarantee seamless panel compatibility\u003c\/li\u003e \u003cli\u003eMaintenance scenarios to restore reliable overcurrent protection for multi‑phase distribution up to 600V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and installation tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, \u003cstrong\u003econfirm fit and ratings\u003c\/strong\u003e against your panel’s labeling and electrical plan. The \u003cem\u003eLD63B350\u003c\/em\u003e part number is the most reliable reference for compatibility, ensuring proper fit, electrical clearance, and protection coordination. If you’re replacing an existing breaker, match the original specifications—amperage, poles, and voltage—to maintain system safety and performance.\u003c\/p\u003e \u003ch3\u003ePractical considerations and best practices\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify the breaker’s serial\/date information and panel compatibility before installation\u003c\/li\u003e \u003cli\u003eHandle with care to avoid impact damage to the trip mechanism and mounting points\u003c\/li\u003e \u003cli\u003eMaintain clear labeling on the panel to reflect updated protection settings\u003c\/li\u003e \u003cli\u003eKeep a spare LD63B350 on hand for planned maintenance to minimize downtime\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re outfitting a data center rack, a manufacturing facility, or a large HVAC distribution system, the Siemens LD63B350 circuit breaker delivers targeted protection where it matters most. It’s the concrete, spec‑matched choice for professionals who demand reliability, precise compatibility, and straightforward procurement based on the part number you trust.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427479834786,"sku":"LD63B350","price":15185.0,"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-ld63b350-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}