{"product_id":"siemens-q340h-40a-240v-3-pole-plug-in-circuit-breaker","title":"Siemens Q340H - 40 A, 240 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Siemens Q340H is a 40A, 240V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch-circuit protection in panelboards and loadcenters. Listed by AmpState, this breaker is built for quick, field-friendly upgrades and reliable performance where it matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e: Snap-in installation for rapid replacement or circuit-board upgrades, minimizing downtime during service or expansion.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Combines heat and magnetic sensing for stable, repeatable protection that responds to both gradual overloads and instantaneous short circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 40A, 240V\u003c\/strong\u003e: Suited for three-phase distribution or multi-pole circuits common in residential, commercial, and light industrial environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM panel compatibility\u003c\/strong\u003e: Engineered to integrate smoothly with Siemens load centers and panelboards for a cohesive, code-compliant installation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile protection\u003c\/strong\u003e: Ideal for safeguarding branch circuits against overcurrent and short-circuit conditions, protecting wiring, devices, and connected equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical snapshot\u003c\/strong\u003e: Siemens Q340H, 40A, 240V, 3-pole, plug-in molded case circuit breaker. Purpose-built for reliable branch-circuit overcurrent and short-circuit protection in both new builds and panel maintenance, across residential, commercial, and light industrial applications.\u003c\/p\u003e \u003ch3\u003eWhy the Siemens Q340H stands out\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eTargeted reliability\u003c\/strong\u003e: The thermal-magnetic design provides predictable trip behavior, helping you avoid nuisance trips while still offering fast response to faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficiency in installation\u003c\/strong\u003e: The plug-in format removes extra steps and special tools, speeding up project timelines whether you’re stocking a service truck or outfitting a panel upgrade.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDesigned for Siemens systems\u003c\/strong\u003e: Built to align with Siemens panel architecture, reducing compatibility concerns and simplifying field wiring and protection coordination.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases and scenarios\u003c\/p\u003e \u003cul\u003e \u003cli\u003eResidential panels undergoing circuit upgrades where a reliable 3-pole, 40A connection is required for balanced loads or specific multi-wire branch circuits.\u003c\/li\u003e \u003cli\u003eSmall commercial distribution boards needing quick replacement to maintain uptime and protect critical circuits.\u003c\/li\u003e \u003cli\u003eLight industrial panels where a robust plug-in breaker supports ongoing maintenance cycles and equipment protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical guidance for getting the most from your Q340H\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePair with compatible Siemens panelboards to ensure seamless fit and optimal trip coordination across circuits.\u003c\/li\u003e \u003cli\u003eUse in applications where both overload protection and rapid short-circuit interruption are essential for protecting wiring and devices.\u003c\/li\u003e \u003cli\u003eDuring installations, verify firm seating in the plug-in slots and follow standard electrical best practices for fixed‑config panels.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355157811362,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_be35d5a2-afdf-453f-9fe0-d404e87a5fa5.png?v=1764689765","url":"https:\/\/www.ampstate.com\/products\/siemens-q340h-40a-240v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}