{"product_id":"siemens-he43b090-circuit-breaker","title":"Siemens | HE43B090 | Circuit Breaker | 90A | 3-Pole | 480V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HE43B090 Circuit Breaker is a robust, bolt-on protection device engineered for demanding 3-phase power systems. With a 90 A rating across three poles and a 480 V operating range, this unit delivers reliable overcurrent protection for industrial distribution panels where precise, dependable performance is essential.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e Bolt-On\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HE43B090\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e maintenance, retrofit, and replacement in compatible Siemens systems\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility Note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The part number is the best reference for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this bolt-on breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSeamless integration with compatible Siemens panels:\u003c\/strong\u003e Designed to complement existing 3-phase, 480 V distribution setups while maintaining consistent protection strategies.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection for balanced circuits:\u003c\/strong\u003e Ensures synchronized shutdown across all phases, which is crucial for equipment with three-phase motors and drives.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eEfficient installation:\u003c\/strong\u003e Bolt-On mounting simplifies field servicing and replacement, reducing downtime during maintenance or retrofits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear, reference-driven compatibility:\u003c\/strong\u003e The HE43B090 part number serves as the primary guide for ensuring exact fit within your system.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance on aging or mission-critical 3-phase 480 V electrical distributions where reliability is non-negotiable.\u003c\/li\u003e \u003cli\u003eRetrofit projects to upgrade panels with a standard 90 A, 3-pole, 480 V protection device from Siemens.\u003c\/li\u003e \u003cli\u003eReplacement of failed or discontinued breakers in compatible Siemens equipment, helping you restore protective performance quickly.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for getting the best results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eAlways verify fit and ratings before ordering by cross-checking the part number HE43B090 with your panel’s documentation.\u003c\/li\u003e \u003cli\u003ePrepare your installation with the correct mounting hardware and ensure the panel is de-energized before removal or installation to maintain safety.\u003c\/li\u003e \u003cli\u003eDocument the replacement reference in your maintenance logs to simplify future servicing and part sourcing.\u003c\/li\u003e \u003cli\u003eUse this breaker specifically in systems that require 3-pole, 480 V protection to maintain proper coordination with adjacent protective devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eDesigned for reliability in industrial environments, the Siemens HE43B090 bolt-on circuit breaker provides dependable, three-phase protection that aligns with existing Siemens equipment while offering a straightforward path for maintenance, retrofit, and replacement projects. Rely on the part number HE43B090 as your primary compatibility reference to ensure a precise, hassle-free match for your 3-pole, 480 V distribution needs.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46426778501282,"sku":"HE43B090","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-he43b090-circuit-breaker-90a-3-pole-480v-bolt-578.webp?v=1789619941","url":"https:\/\/www.ampstate.com\/products\/siemens-he43b090-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}