{"product_id":"siemens-bq3b045l-circuit-breaker","title":"Siemens | BQ3B045L | Circuit Breaker | 45A | 3-Pole | 240V","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens BQ3B045L is a purpose-built circuit breaker designed to protect 3-pole, 240V circuits with a 45A rating. Built for maintenance, retrofit, and replacement projects, this unit delivers reliable protection where exact specifications matter.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45A\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\n\u003c\/ul\u003e \u003ch3\u003eWhy choose the BQ3B045L\u003c\/h3\u003e\n\u003cp\u003eThis model stands out for its precise specification alignment with Siemens systems. When your goal is a seamless cross-reference and dependable performance, the BQ3B045L provides a clear, consistent fit for 3-pole, 240V protection. The part number itself—BQ3B045L—serves as the most reliable reference to confirm compatibility, reducing guesswork during replacements or retrofits.\u003c\/p\u003e \u003ch3\u003eUse cases and practical scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance scenarios where a 3-pole, 240V, 45A protection device is required to restore circuit reliability.\u003c\/li\u003e \u003cli\u003eRetrofit projects that demand an exact part number match to ensure smooth panel integration.\u003c\/li\u003e \u003cli\u003eReplacement of aging or faulty breakers in compatible Siemens electrical systems, minimizing downtime with a ready-to-order component.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, verify fit and ratings for your specific setup. The best reference for compatibility is the part number itself—BQ3B045L. Ensure your panel accepts a 3-pole, 240V, 45A breaker of this type, and confirm mounting and terminal configurations match your existing installation. Keeping a spare on hand can streamline service calls and help maintain uninterrupted service.\u003c\/p\u003e \u003cp\u003eDesigned for professionals who need a dependable Siemens solution that aligns precisely with their 3-phase or 240V protection requirements, the BQ3B045L delivers straightforward installation and predictable performance when exact specifications are essential.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427494154402,"sku":"BQ3B045L","price":570.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-bq3b045l-circuit-breaker-45a-3-pole-240v-928.webp?v=1789731000","url":"https:\/\/www.ampstate.com\/products\/siemens-bq3b045l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}