{"product_id":"siemens-qn2175h-circuit-breaker","title":"Siemens | QN2175H | Circuit Breaker | 175A | 2-Pole | 240V | 22kA","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens QN2175H Circuit Breaker combines precision protection with rugged reliability for 240V electrical systems. This 2-pole unit delivers 175A of continuous current and a robust 22kA interrupting capacity, making it a trusted choice for safeguarding feeders and branch circuits in commercial and light industrial environments.\u003c\/p\u003e \u003cp\u003eDesigned for maintenance, retrofit, and replacement projects where exact specifications matter, the QN2175H is the dependable fit when your panel and protection requirements align with Siemens’ QN series. Its exact part number is the best reference for compatibility, ensuring you get the right device for your existing equipment and configuration.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 175A\u003c\/li\u003e \u003cli\u003ePoles: 2-Pole\u003c\/li\u003e \u003cli\u003eVoltage: 240V\u003c\/li\u003e \u003cli\u003eInterrupting capacity: 22kA\u003c\/li\u003e \u003cli\u003ePart number: QN2175H\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic substitutes, this unit is engineered to work seamlessly with Siemens panelboards and related hardware. The 2-pole configuration ensures simultaneous protection of both hot legs in 240V circuits, while the 22kA rating provides fast fault clearing under high-short-circuit conditions. This combination minimizes equipment damage and downtime, preserving critical electrical infrastructure.\u003c\/p\u003e \u003ch3\u003eWho should consider the QN2175H\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFacilities upgrading or maintaining Siemens panel systems that require 175A, 2-pole protection\u003c\/li\u003e \u003cli\u003eMaintenance teams performing routine service on 240V distribution networks\u003c\/li\u003e \u003cli\u003eRetrofit projects where exact specifications must match existing protection schemes\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eImportant compatibility notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings to ensure seamless integration with your panel. The part number is the most reliable reference for compatibility, helping you avoid mismatches and delays.\u003c\/p\u003e \u003ch3\u003eInstallation and safety tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eFollow manufacturer torque specifications and wiring diagrams during installation\u003c\/li\u003e \u003cli\u003eDe-energize equipment and observe lockout\/tagout procedures\u003c\/li\u003e \u003cli\u003eConsider keeping a spare QN2175H on hand for planned maintenance or quick replacement\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e\n\u003cp\u003eIdeal for 240V distribution feeders in commercial spaces, data centers, and light industrial setups where high-current protection and swift fault clearing are essential. Use during panel upgrades, legacy panel replacements, or any scenario requiring a precise 175A, 2-pole protection solution with a 22kA interrupting capacity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46425647775906,"sku":"QN2175H","price":454.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qn2175h-circuit-breaker-175a-2-pole-240v-22ka-209.webp?v=1789437184","url":"https:\/\/www.ampstate.com\/products\/siemens-qn2175h-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}