{"product_id":"siemens-ngb3b045b-45a-3p-circuit-breaker","title":"Siemens NGB3B045B 45A 3P Circuit Breaker, Bolt-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens NGB3B045B—a 45 A, 3-pole bolt-on circuit breaker crafted for reliable circuit protection in panelboards, load centers, and electrical distribution systems. This specific part, NGB3B045B, is designed to stay consistent with your maintenance and retrofit inventories, ensuring you can source the exact component you need without guesswork.\u003c\/p\u003e \u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting\u003c\/strong\u003e for secure, field-ready installation in Siemens panel assemblies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole configuration\u003c\/strong\u003e (3P) optimizes protection for three-phase electrical systems common in commercial and industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e45 A rated current\u003c\/strong\u003e provides dependable overcurrent protection for mid-size circuits while supporting efficient distribution.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens NGB series compatibility\u003c\/strong\u003e—part number NGB3B045B ensures a precise fit within your existing panelboard layout and cataloging.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpState availability\u003c\/strong\u003e—ready-to-ship stock to support retrofit projects and routine maintenance planning.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cp\u003eUse the NGB3B045B for retrofit work where you need to preserve a consistent part number across your fleet or service schedule. It’s well-suited for upgrading or replacing 3-phase protection in panelboards and distribution panels, helping you minimize downtime during routine maintenance while maintaining proper circuit protection for commercial or light-industrial facilities.\u003c\/p\u003e \u003ch3\u003eCompatibility and support\u003c\/h3\u003e\n\u003cp\u003eIf you’re unsure about fit or need to verify compatibility with your specific panel configuration, AmpState offers guidance to confirm the correct part number and ensure a seamless installation. \u003cem\u003eNeed help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/em\u003e\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\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\u003ePart number:\u003c\/strong\u003e NGB3B045B\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState, the Siemens NGB3B045B 45A 3P Bolt-On circuit breaker is a practical, dependable choice for projects that demand precise compatibility, straightforward installation, and durable protection for three-phase circuits.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412452167842,"sku":"NGB3B045B","price":2055.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/siemens-ngb3b045b-45a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}