{"product_id":"siemens-qr22b150l","title":"Siemens QR22B150L 150A 2-Pole 240 V Circuit Breaker Potential Transformer","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens QR22B150L\u003c\/strong\u003e is a rugged 150A, 2-pole, 240 V circuit breaker designed to protect vital electrical circuits in panels and load centers. With the part number QR22B150L, this device is built to endure demanding industrial and commercial environments while delivering precise fault protection.\u003c\/p\u003e \u003ch3\u003ePrecise protection where it matters\u003c\/h3\u003e\n\u003cp\u003eAs part of the Siemens QR family, the QR22B150L integrates seamlessly with QR-series panels and buses. The thermal-magnetic trip mechanism provides well-defined response across a wide temperature range, ensuring faults are isolated quickly and safely, reducing downstream damage and downtime.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eCurrent rating:\u003c\/strong\u003e 150 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 2\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 240 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e QR22B150L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e 2-pole circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility:\u003c\/strong\u003e Siemens QR-series panels and load centers\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhere and how you’ll use it\u003c\/h3\u003e\n\u003cp\u003eUse the QR22B150L to protect large feeder circuits, main distribution sections, or critical branch circuits in commercial or light-industrial panels. Its 150 A rating makes it ideal for protecting high-current loads such as large motors, HVAC equipment, or processing circuits, provided conductor sizes and panel ratings align with the specification.\u003c\/p\u003e \u003cp\u003eIn systems that include potential transformers or metering instrumentation, this breaker helps ensure safety and reliability within the protection scheme, supporting accurate fault isolation while maintaining overall system protection and monitoring.\u003c\/p\u003e \u003ch3\u003eWhy this Siemens breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eReliability you can count on:\u003c\/strong\u003e Built for consistent performance across varying ambient conditions and frequent switching.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear, repeatable trip curves:\u003c\/strong\u003e Predictable protective response minimizes collateral damage.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEasy maintenance and replacement:\u003c\/strong\u003e Standardized QR-series footprint simplifies upgrades or swaps in compatible panels.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and selection tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify panel compatibility with QR-series breakers to ensure proper fit and electrical clearance.\u003c\/li\u003e \u003cli\u003eMatch conductor size and application needs to the 150 A rating, following the panel’s protection coordination guidelines.\u003c\/li\u003e \u003cli\u003eConsider coordination with metering or sensing equipment; the QR22B150L is suitable for protection schemes in systems that include potential transformers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Siemens QR22B150L, you gain a dependable, high-current protection solution designed for 240 V systems in demanding environments. Ready to safeguard your critical circuits, this 150A, 2-pole breaker offers clarity, reliability, and seamless integration with your Siemens QR-series infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46423399104674,"sku":"QR22B150L","price":1588.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_229276d9-908d-46df-93e5-6fe31866e0ff.png?v=1765492975","url":"https:\/\/www.ampstate.com\/products\/siemens-qr22b150l","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}