{"product_id":"general-electrics-thhqb2120st1-20a-2-pole-bolt-on-circuit-breaker","title":"General Electrics THHQB2120ST1 - 20 A, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electrics THHQB2120ST1 is a dependable 20A, 2-pole bolt-on molded case circuit breaker engineered to safeguard panelboards and load centers from overcurrent and short circuits. Built for durable performance, this unit delivers consistent protection in a compact, easy-to-install package.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e ensures a rigid, vibration-resistant bus connection, reducing loose-term risks in panels subject to equipment movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e provides stable, repeatable protection for both overloads and short circuits, helping prevent nuisance trips while maintaining fast response when faults occur.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e aligns with matching GE OEM load centers and panelboards for seamless replacement, upgrade paths, and dependable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e2-pole configuration\u003c\/strong\u003e protects two conductors (or a shared-neutral circuit), making it suitable for residential and light commercial electrical layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile application\u003c\/strong\u003e ideal for residential, commercial, and light industrial installations that require reliable branch circuit protection and straightforward maintenance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhat this means in practice\u003c\/strong\u003e: if you’re updating a panel, retrofitting a small commercial distribution box, or stocking spare parts for routine service, the THHQB2120ST1 provides predictable protection where you need it most. Its 20A rating is well-suited for lighting circuits, receptacle branches, or controlled equipment racks, delivering consistent performance under normal operating conditions and during fault events.\u003c\/p\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e General Electrics\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e THHQB2120ST1\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\u003eNumber of Poles:\u003c\/strong\u003e 2\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 \u003cp\u003eChoose the THHQB2120ST1 for a purpose-built solution that pairs with GE panelboards and load centers, delivering reliable, bolt-on protection for everyday electrical needs in homes, small businesses, and light industrial environments. Part of AmpState’s trusted lineup, this breaker is ready to install where durable performance and straightforward maintenance matter most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349729300642,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/general-electrics-thhqb2120st1-20-a-2-pole-bolt-on-circuit-breaker-989.webp?v=1788717440","url":"https:\/\/www.ampstate.com\/products\/general-electrics-thhqb2120st1-20a-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}