{"product_id":"siemens-ngb3b045-45a-3p-circuit-breaker","title":"Siemens NGB3B045 45A 3P Circuit Breaker, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens NGB3B045 45A 3P Bolt-On Circuit Breaker—the trusted protection solution for panelboards, load centers, and electrical distribution networks. This 3-pole unit delivers reliable overcurrent protection tailored for multi-phase circuits, engineered for straightforward bolt-on mounting to speed up installation and ensure a secure, vibration-resistant fit. A smart choice from AmpState for maintenance teams, panel builders, and spare inventory where a direct part-number match matters.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e NGB3B045\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens NGB3B045 stands out\u003c\/h3\u003e\n\u003cp\u003eDesigned for direct, dependable installation in multi-phase electrical systems, the NGB3B045 combines precise 45-amp protection with a robust bolt-on mounting approach. Its 3-pole configuration protects all phases of a 3-phase circuit, helping maintain electrical reliability and system uptime. Because it’s a Siemens part, it’s built to align with Siemens panelboards and distribution equipment, reducing compatibility guesswork and saving valuable setup time.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and repair projects where a precise part-number match is required\u003c\/li\u003e \u003cli\u003ePanel builders assembling new electrical distribution solutions\u003c\/li\u003e \u003cli\u003eSpare inventory for service teams needing ready-to-install breakers\u003c\/li\u003e \u003cli\u003eReplacement in existing Siemens-based installations needing reliable 3-pole protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility and support\u003c\/h3\u003e\n\u003cp\u003eFor teams uncertain about fit, AmpState offers assistance to confirm compatibility and ensure you’re selecting the exact NGB3B045 match for your panel or distribution setup. If you need help matching this part number or verifying fit, simply reach out and we’ll guide you through the confirmation process.\u003c\/p\u003e \u003ch3\u003ePractical tips for use and stocking\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eKeep a dedicated spare for Siemens panelboards and load centers to minimize downtime during maintenance\u003c\/li\u003e \u003cli\u003eUse this 3-pole bolt-on breaker where a reliable, straightforward installation is valued over clip-on alternatives\u003c\/li\u003e \u003cli\u003eDocument the exact part number (NG B3B045) and amperage (45 A) in your asset inventory to simplify future replacements\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e Choose the Siemens NGB3B045 45A 3P Bolt-On Circuit Breaker from AmpState for precise fit, dependable protection, and streamlined installation in industrial and commercial electrical distributions.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46413641580706,"sku":"NGB3B045","price":2804.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-ngb3b045-45a-3p-circuit-breaker-bolt-on-ampstate-breakers-645.webp?v=1789072978","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb3b045-45a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}