{"product_id":"siemens-hed43b090-90a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens HED43B090 - 90 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Siemens HED43B090, a 90A, 480V, 3-pole bolt-on molded case circuit breaker built for dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. This bolted, mechanically secure design pairs with matching Siemens OEM load centers to deliver a clean, reliable protection solution for demanding electrical environments.\u003c\/p\u003e \u003cp\u003eKey features you can trust:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e provides a rigid, vibration-resistant bus connection, reducing the risk of loose connections and nuisance trips in demanding installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e delivers stable, repeatable protection by addressing both overload conditions and instantaneous short circuits, helping to minimize downtime and protect connected equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 480V operation\u003c\/strong\u003e designed for three-phase systems common in commercial and light industrial settings, enabling balanced protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM compatibility\u003c\/strong\u003e engineered to align with matching Siemens load centers and panelboards for straightforward installation and reliable performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suitable for residential, commercial, and light industrial environments where robust branch-circuit protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Siemens\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e HED43B090\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage Rating:\u003c\/strong\u003e 90 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage Rating:\u003c\/strong\u003e 480 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eNumber of Poles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Bolt-on\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens HED43B090 stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for reliable, long-term protection in panelboards and load centers, with a mounting method that minimizes vibration-related issues.\u003c\/li\u003e \u003cli\u003eThermal-magnetic trip behavior translates to predictable responses across a range of fault currents, helping protect both equipment and wiring from damage.\u003c\/li\u003e \u003cli\u003eThree-pole configuration ensures synchronized protection across all phases in 480V systems, improving protection integrity for motors, business-critical circuits, and distribution panels.\u003c\/li\u003e \u003cli\u003eOEM-compatible construction means installation is streamlined, reducing commissioning time and compatibility concerns with existing Siemens gear.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal for professionals upgrading or expanding electrical infrastructure, the Siemens HED43B090 delivers direct, purpose-built protection for 3-phase, 480V circuits. Whether you’re panel-lining a commercial storefront, equipping a small industrial service, or updating a residential-commercial mixed-use panel, this bolt-on MCCB provides clear, decisive protection with construction-grade reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349801783458,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-hed43b090-90-a-480-v-3-pole-bolt-on-circuit-breaker-488.webp?v=1788729967","url":"https:\/\/www.ampstate.com\/products\/siemens-hed43b090-90a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}