{"product_id":"eaton-qbh40","title":"Eaton QBH40 40A 1-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003eProtect what powers your space with the Eaton QBH40 40A 1-Pole 240 V Circuit Breaker Potential Transformer. This single-pole breaker delivers precise overcurrent protection for 240-volt circuits and is built to endure everyday panel operation in residential and light commercial applications. Part Number QBH40 ensures you’re selecting a genuine Eaton component designed to fit compatible panels and replace existing QB-style breakers with confidence.\u003c\/p\u003e \u003cp\u003eKey specifications at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit breaker, single-pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSeries\/compatibility:\u003c\/strong\u003e Eaton QB family (for use in compatible panelboards)\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy it matters and how you’ll use it:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eSafeguards branch circuits feeding lighting, outlets, and appliances on 240 V systems from overloads and short circuits, reducing risk of damage and fire.\u003c\/li\u003e \u003cli\u003eIdeal for upgrading an existing panel or replacing a worn-out breaker in residential settings, garages, workshops, and small offices where 240 V single-phase circuits are common.\u003c\/li\u003e \u003cli\u003eSupports organized, safe electrical layouts by providing reliable tripping behavior when current exceeds 40 A.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical tips:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBefore installation, verify your panel accepts 1-pole QB-type breakers and that your wiring is rated for 240 V and 40 A circuits.\u003c\/li\u003e \u003cli\u003eInspect mounting rails and terminal connections for clean contact to ensure consistent operation and easy future replacements.\u003c\/li\u003e \u003cli\u003eUse in a properly enclosed panel with appropriate safety precautions; de-energize the service before any changes.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhether you’re updating an aging electrical panel, outfitting a new workshop, or ensuring reliable protection for a 240 V circuit in a commercial space, the Eaton QBH40 delivers dependable protection with trusted Eaton build quality. Choose this Part Number QBH40 for a genuine, compatible solution that fits your existing Eaton protection setup.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46423640047778,"sku":"QBH40","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/eaton-qbh40","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}