{"product_id":"siemens-he3a045-circuit-breaker","title":"Siemens | HE3A045 | Circuit Breaker | 45A | 3-Pole | 480V | Bolt-On","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSiemens HE3A045 Circuit Breaker\u003c\/strong\u003e — a robust 3-Pole, 45 Amp, 480-Volt bolt-on protection solution designed for reliable safeguarding of commercial and industrial electrical panels.\u003c\/p\u003e \u003cp\u003eKey specs at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 45 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\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 HE3A045\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this matters: For any upgrade, retrofit, or replacement in a 3-phase system, matching the exact part number ensures proper trip characteristics, correct panel fit, and uninterrupted protection for feeders and branch circuits. The HE3A045 is specifically designed for bolt-on installation in panels that require a 3-pole 480V breaker with a 45A rating, delivering dependable performance in demanding environments.\u003c\/p\u003e \u003cp\u003eIdeal use scenarios:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eMaintenance and retrofit projects in facilities that operate on 480V three-phase power (manufacturing floors, data centers, commercial buildings).\u003c\/li\u003e \u003cli\u003eReplacement in Siemens-compatible panels where the original equipment specifies the HE3A045 for fit and ratings.\u003c\/li\u003e \u003cli\u003eProtection upgrades for motor feeders, pumps, and HVAC systems within industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eHow to ensure a perfect fit (practical guidance):\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eConfirm your panel requires a 3-pole bolt-on breaker with a 480V rating and a 45A current rating.\u003c\/li\u003e \u003cli\u003eUse the \u003cstrong\u003eHE3A045\u003c\/strong\u003e part number as the primary compatibility reference when ordering.\u003c\/li\u003e \u003cli\u003eCheck your enclosure’s mounting configuration and bus arrangement to ensure straightforward bolt-on installation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith Siemens, you’re choosing a component built for reliability in demanding environments. The HE3A045 provides a precise, match-specific option for maintenance outages, replacements, and retrofits where exact specs matter, helping you maintain system uptime and electrical safety.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Siemens","offers":[{"title":"Default Title","offer_id":46427177156770,"sku":"HE3A045","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-he3a045-circuit-breaker-45a-3-pole-480v-bolt-403.webp?v=1789678349","url":"https:\/\/www.ampstate.com\/products\/siemens-he3a045-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}