{"product_id":"siemens-hgb1b020b-20a-347v-1-pole-bolt-on-circuit-breaker","title":"Siemens HGB1B020B - 20 A, 347 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HGB1B020B is a 20A, 347V, 1-pole bolt-on molded case circuit breaker engineered for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its rugged design and precise protection make it a reliable cornerstone for commercial, light industrial, and updated residential electrical systems.\u003c\/p\u003e \u003ch3\u003eWhy the HGB1B020B stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e delivers a rigid, vibration-resistant bus connection that stays tight through busy electrical environments, reducing wiggle and maintaining consistent protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection performance, automatically adjusting to normal operating temperatures while quickly responding to overcurrent or short-circuit conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is built to integrate seamlessly with matching Siemens panelboards and load centers, simplifying installation and ensuring reliable operation within your existing system.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-pole, 20A at 347V\u003c\/strong\u003e configuration targets specific branch circuits in commercial and light industrial settings, delivering focused protection where it matters most.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cp\u003eUse the HGB1B020B for branch-circuit protection in panelboards and load centers across a range of environments:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCommercial lighting, receptacle circuits, and small equipment feeds\u003c\/li\u003e \u003cli\u003eRetrofits and upgrades in existing Siemens installations\u003c\/li\u003e \u003cli\u003eLight industrial panel setups where reliable, vibration-tolerant protection is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\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 HGB1B020B\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 20A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 347V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 1\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\u003ePractical guidance for installation and maintenance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify compatibility with your OEM panelboard or load center to ensure a perfect fit and reliable operation.\u003c\/li\u003e \u003cli\u003eTighten bolt-on mounting hardware to the specified torque to preserve a solid bus connection and prevent unwanted movement during operation.\u003c\/li\u003e \u003cli\u003eIn environments with vibration or frequent access doors, rely on the bolt-on design to maintain connection integrity and reduce nuisance trips.\u003c\/li\u003e \u003cli\u003eDuring routine inspections, check for signs of overheating, discoloration, or wear around the breaker and surrounding bus connections, and replace if performance appears degraded.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349805519010,"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_25140926-a227-4527-b407-5646b39170cc.png?v=1764157312","url":"https:\/\/www.ampstate.com\/products\/siemens-hgb1b020b-20a-347v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}