{"product_id":"commander-125-amp-circuit-breaker-qbh3125-125a-circuit-breaker","title":"Commander 125 Amp Circuit Breaker QBH3125 - 125 A Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003ch2\u003eCommander QBH3125, 125 Amp Molded Case Circuit Breaker\u003c\/h2\u003e\n\u003cp\u003eThe Commander QBH3125 is a dependable 125 A molded case circuit breaker designed to shield your electrical system from overcurrent and short-circuit events. Engineered for panelboards and loadcenters, this compact, thermal-magnetic device delivers stable, repeatable protection for every branch circuit it guards.\u003c\/p\u003e \u003ch3\u003eWhat makes it unique\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpace-efficient design:\u003c\/strong\u003e Its compact molded case form optimizes panel space, helping you fit more circuits without crowding the enclosure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Combines thermal response for overload protection with magnetic action for immediate short-circuit interruption, delivering predictable and dependable protection performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible:\u003c\/strong\u003e Specifically designed to work with matching OEM loadcenters and panelboards, ensuring seamless integration and reliable operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile protection:\u003c\/strong\u003e Suitable for residential, commercial, and light industrial applications, making it a practical choice across a range of electrical installations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong amperage rating:\u003e 125 A\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QBH3125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Commander\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy you’ll love it in your panel\u003c\/h3\u003e\n\u003cp\u003eWhen protecting branch circuits in panelboards and loadCenters, reliability matters. The QBH3125’s thermal-magnetic design offers stable performance across a range of ambient temperatures and load conditions, reducing nuisance trips while still delivering fast interruption during a short circuit. Its compatibility with OEM equipment means fewer compatibility concerns during panel upgrades or replacements, helping you maintain a clean, code-compliant electrical installation.\u003c\/p\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing a 125 A circuit breaker in residential service panels or commercial loadcenters.\u003c\/li\u003e \u003cli\u003eAdding protected branches in new construction or retrofit projects where space efficiency is important.\u003c\/li\u003e \u003cli\u003eSituations requiring a dependable, easy-to-source 125 A protection device that aligns with existing OEM panel hardware.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho should consider this breaker\u003c\/h3\u003e\n\u003cp\u003eElectricians, facilities managers, and contractors who need a reliable, OEM-compatible 125 A protection device for panelboards and loadcenters will find the QBH3125 a straightforward, trustworthy choice. It’s well-suited for technicians performing routine panel maintenance, upgrades, or new installations in homes, offices, retail spaces, and light industrial environments.\u003c\/p\u003e \u003ch3\u003ePractical tips for installation and use\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eConfirm compatibility with your panelboard or loadcenter’s model family before installation to ensure a seamless fit.\u003c\/li\u003e \u003cli\u003eFollow manufacturer torque specifications for terminal connections to maintain secure, low-resistance terminations.\u003c\/li\u003e \u003cli\u003eLabel affected circuits clearly in the panel schedule to help quick fault isolation after a trip.\u003c\/li\u003e \u003cli\u003eUse as a dedicated protection device for each branch circuit to maximize protection reliability and lifecycle performance.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349483966626,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton_breaker_and_panels_35e56c65-77ba-442b-b4ef-907b1a467139.png?v=1764147908","url":"https:\/\/www.ampstate.com\/products\/commander-125-amp-circuit-breaker-qbh3125-125a-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}