{"product_id":"siemens-qr22b175l-175a-240v-2-pole-bolt-on-circuit-breaker","title":"Siemens QR22B175L - 175 A, 240 V, 2-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens QR22B175L—a 175 A, 240 V, 2-pole bolt-on molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Built for durability in real-world electrical environments, it’s a trusted choice for both new installations and reliable replacements.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this Siemens QR22B175L stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e—engineered for a rigid, vibration-resistant bus connection that stays put in demanding setups, reducing movement-related wear and ensuring consistent protection performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e—combines thermal overload protection with instantaneous magnetic response for short circuits, delivering stable and repeatable protection across a range of operating conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e22B175L designation\u003c\/strong\u003e—2-pole design at 175 A and 240 V, ideal for protecting larger branch circuits in residential, commercial, and light industrial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e—specifically designed to be compatible with matching Siemens OEM load centers and panelboards, simplifying replacement and upgrade workflows.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eDurable molded-case construction\u003c\/strong\u003e—built to endure frequent switching, thermal cycling, and routine maintenance in busy electrical rooms.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat problems does it solve?\u003c\/h3\u003e\n\u003cp\u003eWhen a branch circuit needs robust protection without sacrificing reliability, the QR22B175L provides a clear solution. The bolt-on design minimizes loosening and vibration-related trips, while the thermal-magnetic trip unit delivers quick, controlled responses to overloads and short circuits. This combination helps prevent damage to wiring and equipment, improves system uptime, and simplifies maintenance in panelboards and load centers.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations requiring a high-current, 2-pole bolt-on breaker in Siemens-compatible panelboards.\u003c\/li\u003e \u003cli\u003eReplacements in residential feeders, commercial lighting, or small-machinery circuits where vibration resistance is a priority.\u003c\/li\u003e \u003cli\u003eUpgrading or standardizing protection across existing Siemens OEM load centers and panelboards for consistent performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: QR22B175L\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003eAmperage Rating: 175 A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 240 V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 2\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical guidance for installation and use\u003c\/h3\u003e\n\u003cp\u003eChoose the QR22B175L when you need a robust, high-current protection device that aligns with Siemens panelboard ecosystems. Ensure compatibility with the existing panelboard model and follow the panel manufacturer’s installation torque and mounting guidelines for bolt-on devices. This breaker is well-suited for environments where reliability and vibration resistance are critical, such as service entrances, commercial spaces, and light industrial settings.\u003c\/p\u003e \u003cp\u003eFor electricians and facilities managers, the Siemens QR22B175L represents a thoughtful balance of performance and practicality: a 175 A, 240 V, 2-pole bolt-on MCCB with a thermal-magnetic trip unit, designed to deliver consistent protection in Siemens-compatible panelboards and load centers across residential, commercial, and light industrial applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355164659874,"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_5c5fc765-d3cf-45e9-98f0-01d99476c62c.png?v=1764689897","url":"https:\/\/www.ampstate.com\/products\/siemens-qr22b175l-175a-240v-2-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}