{"product_id":"siemens-qj3b150ha01-circuit-breaker","title":"Siemens | QJ3B150HA01 | Circuit Breaker | 150A | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens QJ3B150HA01\u003c\/strong\u003e circuit breaker — a dependable 150A, 3-pole, 240V bolt-on protection solution designed for busy electrical panels. Built for maintenance, retrofit, and replacement projects where exact Siemens compatibility matters, this unit helps keep distributions safe and compliant while minimizing downtime.\u003c\/p\u003e \u003ch2\u003eKey features that matter in the real world\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e150A current rating\u003c\/strong\u003e provides robust protection for mid-size feeders and main-disconnect applications within commercial or industrial panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole configuration\u003c\/strong\u003e delivers balanced protection across three-phase systems, supporting reliable operation in typical 3-phase power environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e240V working voltage\u003c\/strong\u003e aligns with common distribution circuits found in Siemens-based electrical installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-On mounting\u003c\/strong\u003e enables quicker, cleaner installations and swaps, reducing service time and panel disruption compared with bolt-on alternatives that require more involved wiring adjustments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSiemens authenticity and compatibility\u003c\/strong\u003e ensures seamless integration with Siemens panels and accessories, helping you avoid fitment or performance issues during maintenance or upgrades.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cp\u003eWhat makes the QJ3B150HA01 more than just a part is its reliability in demanding environments. When you're maintaining or upgrading a panel, you need certainty that the component will perform as intended, fit perfectly, and endure the rigors of daily operation. The Siemens part number \u003cstrong\u003eQJ3B150HA01\u003c\/strong\u003e is your best reference for compatibility, ensuring you’re selecting a unit designed for your specific panel family and duty cycle.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and service replacements in Siemens-compatible panels where a 150A, 3-pole, 240V breaker is required.\u003c\/li\u003e \u003cli\u003eRetrofit projects that upgrade protection for mid-size electrical feeders in commercial settings.\u003c\/li\u003e \u003cli\u003eSpare parts inventory for facilities that rely on Siemens distribution systems, aiding rapid response to planned or unplanned outages.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eInstallation and safety notes\u003c\/h3\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings—the \u003cstrong\u003eQJ3B150HA01\u003c\/strong\u003e designation is the most reliable reference for compatibility with your panel. Follow standard electrical safety practices: verify power is isolated, use appropriate PPE, and ensure mounting alignment and terminal tightness after installation. This bolt-on design is intended to streamline service tasks and minimize downtime during replacements or upgrades.\u003c\/p\u003e \u003ch3\u003eWhat to expect in operation\u003c\/h3\u003e\n\u003cp\u003eWith its solid Siemens construction, this breaker delivers dependable overload and short-circuit protection for three-phase circuits at 240V. It’s suited for facilities that require reliable protection coordination with upstream devices and a straightforward replacement path when components reach end of life.\u003c\/p\u003e \u003cp\u003eChoose the Siemens QJ3B150HA01 for a precise, purpose-built solution that aligns with your existing Siemens electrical ecosystem, supports efficient maintenance workflows, and helps you maintain steady, protected power distribution across your facility.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427418689698,"sku":"QJ3B150HA01","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj3b150ha01-circuit-breaker-150a-3-pole-240v-bolt-947.webp?v=1789720478","url":"https:\/\/www.ampstate.com\/products\/siemens-qj3b150ha01-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}