{"product_id":"siemens-ngb3b045b-45a-600v-3-pole-bolt-on-circuit-breaker","title":"Siemens NGB3B045B - 45 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens NGB3B045B is a 45A, 600V, 3-pole bolt-on molded case circuit breaker engineered to shield branch circuits from overcurrent and short-circuit events. Built for reliability in panelboards and loadcenters, this unit combines rugged mechanical mounting with precise thermal-magnetic protection to keep electrical systems running smoothly.\u003c\/p\u003e \u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that helps maintain consistent electrical contact even in environments with machinery or shifting loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both overload (thermal) and short-circuit (magnetic) conditions, reducing nuisance trips and improving overall safety.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is engineered to pair with matching Siemens OEM load centers and panelboards for seamless integration and dependable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e suitable for residential, commercial, and light industrial installations, offering a reliable solution across a range of electrical systems.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew panelboard installations in homes, offices, and small-to-medium facilities where a compact three-pole solution is required.\u003c\/li\u003e \u003cli\u003eRetrofits or replacements in existing Siemens-compatible load centers to restore or upgrade branch circuit protection.\u003c\/li\u003e \u003cli\u003eProtection for multi-wire branch circuits and systems with moderate to heavy load demands that benefit from a robust bolt-on connection.\u003c\/li\u003e\n\u003c\/ul\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\u003ePart Number\u003c\/strong\u003e: NGB3B045B\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType\u003c\/strong\u003e: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating\u003c\/strong\u003e: 45A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e: 600V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e: 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style\u003c\/strong\u003e: Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication\u003c\/strong\u003e: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation \u0026amp; compatibility\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for integration with matching Siemens OEM panelboards and loadcenters, ensuring cohesive system performance.\u003c\/li\u003e \u003cli\u003eBest installed in configurations that require secure, vibration-resistant operation and reliable trip performance under varying ambient conditions.\u003c\/li\u003e \u003cli\u003eFollow manufacturer installation guidelines for bolt torque and wiring practices to maintain protection reliability and safety.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eEquip your electrical distribution with the Siemens NGB3B045B to achieve dependable branch protection, straightforward installation, and compatibility across Siemens panel products. This 3-pole bolt-on breaker is a practical, durable choice for safeguarding circuits in residential, commercial, and light industrial environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355138740386,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_eddb7b14-f435-460d-8299-f93e1272f922.png?v=1764689586","url":"https:\/\/www.ampstate.com\/products\/siemens-ngb3b045b-45a-600v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}