{"product_id":"siemens-ld63b300l-circuit-breaker","title":"Siemens | LD63B300L | Circuit Breaker | 300A | 3-Pole | 600V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens LD63B300L circuit breaker—an authoritative 3-pole, 300A bolt-on device engineered for demanding electrical systems. With a 600V rating, it delivers reliable protection in industrial and commercial panels where precise compatibility is non-negotiable. Designed for maintenance, retrofit, and replacement projects, this breaker helps you keep power, safety, and performance aligned with your existing infrastructure.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 300A\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 LD63B300L for exact compatibility\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this specific breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003ePrecise compatibility is built into the part number—LD63B300L—so you can confidently match it to your panel without guesswork.\u003c\/li\u003e \u003cli\u003eThree-pole design provides balanced protection for three-phase systems, helping safeguard motors, drives, and other heavy loads.\u003c\/li\u003e \u003cli\u003eBolt-on mounting offers a secure, vibration-resistant installation that’s ideal for industrial environments where reliability matters.\u003c\/li\u003e \u003cli\u003eTailored for retrofit and replacement scenarios, reducing downtime and simplifying inventory decisions for service teams.\u003c\/li\u003e \u003cli\u003eSuitable for 600V electrical systems—verify your panel’s voltage rating and slot configuration to ensure a flawless fit.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003ePractical use cases\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance planning: keep a compatible LD63B300L on hand for quick replacement when routine service is required.\u003c\/li\u003e \u003cli\u003eRetrofits: upgrade legacy 3-phase protection with a unit that matches your original specifications exactly.\u003c\/li\u003e \u003cli\u003eEnd-of-life replacements: swap in a like-for-like breaker to restore protective performance with minimal panel disruption.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eInstallation and compatibility tips\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAlways confirm fit and ratings before ordering—the LD63B300L is the best reference for compatibility with your panel.\u003c\/li\u003e \u003cli\u003ePrepare the mounting hardware appropriate for bolt-on installation and verify your panel’s 600V rating matches the breaker specifications.\u003c\/li\u003e \u003cli\u003eKeep a spare LD63B300L in your service stock to reduce downtime during critical maintenance windows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Siemens LD63B300L for dependable, three-phase protection that speaks to professionals who value exact fit, straightforward maintenance, and durable performance in demanding electrical environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427479867554,"sku":"LD63B300L","price":6189.0,"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-ld63b300l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}