{"product_id":"general-electrics-thhqb32040st1-40a-3-pole-bolt-on-circuit-breaker","title":"General Electrics THHQB32040ST1 - 40 A, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe General Electrics THHQB32040ST1 is a purpose-built solution for reliable protection of three-phase branch circuits in panelboards and load centers. With a 40 A rating and a 3-pole bolt-on design, this molded case circuit breaker delivers dependable overcurrent and short-circuit defense where it matters most—without sacrificing performance or compatibility. \u003c\/p\u003e \u003ch3\u003e why this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant connection to the bus bars, helping maintain consistent electrical contact in environments subject to movement or vibration.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e combines precise thermal sensing with magnetic trip action for stable, repeatable protection across a range of fault conditions, reducing nuisance trips while safeguarding equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole architecture\u003c\/strong\u003e is ideal for 3-phase circuits common in commercial and light-industrial applications, supporting balanced protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-ready compatibility\u003c\/strong\u003e is designed to pair with matching General Electrics OEM load centers and panelboards, ensuring a seamless fit and consistent protection performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMolded-case reliability\u003c\/strong\u003e delivers durable, long-term protection for residential, commercial, and light-industrial installations where dependable circuit interruption is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003e ideal applications and use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eProtection for 3-phase industrial equipment, HVAC systems, and commercial lighting where a robust, bolt-on breaker is preferred for retrofit or new installations.\u003c\/li\u003e \u003cli\u003eReplacement or upgrade in panelboards and load centers that require a precise 40 A, 3-pole thermal-magnetic solution with OEM compatibility.\u003c\/li\u003e \u003cli\u003eSituations demanding secure mounting to resist vibration and maintain stable electrical performance over time.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003etechnical snapshot\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 THHQB32040ST1\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 40 A\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\u003ewhy it matters for your project\u003c\/h3\u003e\n\u003cp\u003eChoosing the THHQB32040ST1 means more than just a part replacement—it’s a designed-in safeguard that supports reliable operation of your electrical system. The combination of a secure bolt-on connection and a responsive thermal-magnetic trip unit minimizes downtime and protects sensitive equipment from damaging faults. Its compatibility with matched OEM panelboards ensures you’re not compromising protection or performance when expanding or upgrading your electrical install.\u003c\/p\u003e \u003cp\u003eWhether you’re outfitting a small commercial space, a light-industrial facility, or upgrading a residential panelboard with 3-phase capability, the General Electrics THHQB32040ST1 offers steady, predictable protection that electricians and facility managers can trust. For a focused, high-fidelity protection solution in a bolt-on format, this 40 A, 3-pole circuit breaker from AmpState is designed to perform when it matters most.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349729530018,"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-thhqb32040st1-40-a-3-pole-bolt-on-circuit-breaker-303.webp?v=1788717503","url":"https:\/\/www.ampstate.com\/products\/general-electrics-thhqb32040st1-40a-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}