{"product_id":"siemens-qr22b175-175a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens QR22B175 - 175 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Siemens QR22B175 — a rugged 175A, 240V, 2-pole bolt-on molded case circuit breaker designed to shield your electrical systems from overloads and short circuits. Built for reliable branch circuit protection in panelboards and load centers, this unit combines durable construction with precise thermal-magnetic trip performance for consistent, dependable protection.\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt-on mounting for a rock-solid connection\u003c\/strong\u003e: Secure, vibration-resistant bus terminations reduce loosening over time and maintain consistent trips even in demanding environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: Combines thermal overload protection with magnetic short-circuit protection, delivering stable, repeatable protection across varying loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e175A, 240V, 2-pole design\u003c\/strong\u003e: Specifically engineered to protect two hot conductors and the connected branch circuits in residential, commercial, and light industrial installations.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOEM-compatible\u003c\/strong\u003e: Designed to work with matching Siemens OEM load centers and panelboards, ensuring seamless integration with your existing equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile for multiple settings\u003c\/strong\u003e: Suitable for residential, commercial, and light industrial applications where dependable overcurrent protection is critical.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eManufacturer: Siemens\u003c\/li\u003e\n\u003cli\u003ePart Number: QR22B175\u003c\/li\u003e\n\u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e\n\u003cli\u003eAmperage Rating: 175A\u003c\/li\u003e\n\u003cli\u003eVoltage Rating: 240V\u003c\/li\u003e\n\u003cli\u003eNumber of Poles: 2\u003c\/li\u003e\n\u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e\n\u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker is a smart choice\u003c\/h3\u003e\n\u003cp\u003eWhen vibration, heavy loads, or dense panel layouts are part of the equation, bolt-on breakers like the QR22B175 deliver a more dependable connection than other mounting styles. The secure bus connection minimizes the risk of loose contacts that can cause nuisance trips or inconsistent protection. The thermal-magnetic trip behavior provides precise protection characteristics, helping you avoid unnecessary shutdowns while still guarding against dangerous short circuits.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eResidential service panels where two-pole protection is required for main feeders or subfeed breakers.\u003c\/li\u003e\n\u003cli\u003eCommercial distribution panels with higher current needs and frequent wiring activity.\u003c\/li\u003e\n\u003cli\u003eLight industrial panels where vibration resistance and durable mounting are important for long-term reliability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical installation notes\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eEnsure the panelboard or load center is compatible with bolt-on 2-pole breakers of the QR series and supports a 175A rating.\u003c\/li\u003e\n\u003cli\u003eFollow the manufacturer’s torque specifications for bolt-on mounting to ensure a secure, code-compliant connection.\u003c\/li\u003e\n\u003cli\u003eUse in circuits protected up to 175A maximum current; plan your feeder and branch circuits accordingly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355164463266,"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_7d5b5313-39bd-4a32-9287-a19768b62f76.png?v=1764689896","url":"https:\/\/www.ampstate.com\/products\/siemens-qr22b175-175a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}