{"product_id":"siemens-qrh22b125-125a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens QRH22B125 - 125 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens QRH22B125 is a 2-pole bolt-on molded case circuit breaker rated at 125 A and 240 V, purpose-built to deliver reliable branch-circuit protection in panelboards and load centers. Its rugged design and precise protection features make it a dependable choice for residential, commercial, and light industrial electrical systems.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection that stays solid under real-world conditions, reducing movement-related wear and potential faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by responding to both sustained overloads and sudden short circuits, helping to prevent damage to conductors and downstream devices.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e is built to fit with matching Siemens OEM load centers and panelboards, simplifying replacements and upgrades without fit issues.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for multiple environments\u003c\/strong\u003e suitable for residential service panels, commercial distribution, and light industrial circuits that require dependable 125 A protection at 240 V.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases and scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUpgrading or replacing circuit breakers in existing Siemens panelboards to maintain consistent protection across the system.\u003c\/li\u003e \u003cli\u003eProtecting branch circuits serving HVAC equipment, motors, lighting, and other 240 V loads in small-to-mid-scale installations.\u003c\/li\u003e \u003cli\u003eIntegrating into new builds where a robust, bolt-on solution is preferred for improved mechanical stability in vibration-prone environments.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e QRH22B125\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 125 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and compatibility guidance\u003c\/h3\u003e\n\u003cp\u003eThis unit is designed to work with matching OEM Siemens load centers and panelboards. For optimal performance, ensure the enclosure and conductors are rated for 240 V and 125 A, and follow Siemens installation guidelines for bolt-on breakers to achieve a secure, vibration-resistant connection.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355166920866,"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_4289bc36-1b36-4d18-94d9-9ab76e965d2c.png?v=1764689922","url":"https:\/\/www.ampstate.com\/products\/siemens-qrh22b125-125a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}