{"product_id":"eaton-qbhw1040-40a-240v-1-pole-bolt-on-circuit-breaker","title":"Eaton QBHW1040 - 40 A, 240 V, 1-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Eaton QBHW1040 — a rugged 40A, 240V, 1-pole bolt-on molded case circuit breaker designed to protect your electrical installations with confidence. Ideal for residential, commercial, and light-industrial panelboards and load centers, this breaker delivers dependable overcurrent and short-circuit protection where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, maintaining a tight, reliable path for current even in busy equipment rooms or environments with frequent equipment starts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e combines precise thermal overload protection with rapid magnetic response for_short faults_, delivering consistent protection across a broad range of fault currents.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-panel compatibility:\u003c\/strong\u003e designed to pair seamlessly with matching Eaton loadcenters and panelboards, ensuring a clean fit and dependable performance without modification.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile, single-pole design:\u003c\/strong\u003e specifically suited for circuits that require a 40A breaker at 240V, balancing strong protection with efficient space use in panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot:\u003c\/strong\u003e Model QBHW1040, thermal-magnetic molded case, 40A, 240V, 1-pole, bolt-on mounting. Purpose-built for branch-circuit overcurrent and short-circuit protection.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eUse cases you’ll encounter\u003c\/strong\u003e include protecting a dedicated circuit for high-draw equipment (such as water heaters, subpanels, or HVAC components), safeguarding lighting and receptacle circuits in small to mid-size commercial rooms, and serving as a robust, bolt-on solution in retrofit projects where secure mounting is essential. If your panel requires a bolt-on, 1-pole, 40A, 240V protective device, the QBHW1040 offers a precise match.\u003c\/p\u003e \u003cp\u003eWhy this design matters in real-world service: the combination of secure mounting, reliable thermal-magnetic protection, and OEM compatibility translates to fewer field adjustments, lower maintenance, and more predictable interruption performance when faults occur. It’s a practical choice for electricians stocking dependable, readily compatible parts for Eaton-based panel systems.\u003c\/p\u003e \u003cp\u003eSold by AmpState, the Eaton QBHW1040 brings proven protection to your electrical infrastructure with clear, straightforward installation and durable, long-term performance. If you’re upgrading or stocking parts for panelboards and load centers, this breaker delivers the reliability and compatibility you need for steady, safe operation.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349661634722,"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_1316d077-73f6-4911-bf59-c763d80e3549.png?v=1764153024","url":"https:\/\/www.ampstate.com\/products\/eaton-qbhw1040-40a-240v-1-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}