{"product_id":"siemens-qj3b090ha02-circuit-breaker","title":"Siemens | QJ3B090HA02 | Circuit Breaker | 3-Pole | 240V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens QJ3B090HA02—your 3-pole, 240-volt bolt-on circuit breaker designed for reliable protection in maintenance-ready, retrofit, and replacement projects. When a Siemens part number is required, QJ3B090HA02 delivers precise compatibility and consistent performance across Siemens panel systems.\u003c\/p\u003e \u003cp\u003eKey reasons to choose this breaker:\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e supports 3-phase circuits, enabling clean, balanced protection in commercial and industrial panels.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBolt-on mounting\u003c\/strong\u003e provides a secure, solid connection that resists vibration and loose contacts in busy electrical environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e240V rating\u003c\/strong\u003e aligns with standard 3-phase service or single-phase feeders in many installations (verify panel rating).\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact reference\u003c\/strong\u003e use part number QJ3B090HA02 to confirm compatibility with your Siemens equipment.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eVersatile for maintenance, retrofit, and replacement\u003c\/strong\u003e when you need to restore proper protection quickly without mismatched specs.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhat this means in practice\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003eIn ongoing facility maintenance, you can stock this bolt-on breaker as a ready-to-install replacement for Siemens panels that call for QJ3B090HA02, reducing downtime when a trip occurs.\u003c\/li\u003e\n\u003cli\u003eDuring retrofit projects, it ensures your new 3-phase distribution aligns with existing wiring, busbars, and accessory components in Siemens ecosystems.\u003c\/li\u003e\n\u003cli\u003eIn manufacturing or data-center environments, this breaker helps maintain uptime by delivering dependable short-circuit and overload protection for critical feeders.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eImportant notes\u003c\/p\u003e \u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eFit and ratings\u003c\/strong\u003e must be verified before ordering to ensure safe operation within your electrical system. The part number is your best reference for compatibility.\u003c\/li\u003e\n\u003cli\u003eHandle with the power off and follow standard electrical safety practices during installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for electricians, panel builders, facilities managers, and maintenance teams who rely on Siemens' proven protection technology. If your application requires a 3-pole, 240V bolt-on breaker and the QJ3B090HA02 designation, this unit is designed to integrate smoothly with your existing Siemens infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427419836578,"sku":"QJ3B090HA02","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-qj3b090ha02-circuit-breaker-3-pole-240v-bolt-289.webp?v=1789720747","url":"https:\/\/www.ampstate.com\/products\/siemens-qj3b090ha02-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}