{"product_id":"siemens-hed43b045-45a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens HED43B045 - 45 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eSiemens HED43B045 is a 45A, 480V, 3-pole bolt-on molded case circuit breaker engineered to protect panelboards and load centers from damaging overcurrent and short circuits. Built for steady, repeatable protection in demanding electrical environments, this bolt-on unit delivers a secure, vibration-resistant connection and dependable performance when it matters most.\u003c\/p\u003e \u003ch2\u003eSolid, bolt-on reliability for demanding electrical panels\u003c\/h2\u003e\n\u003cp\u003eDesigned for secure mounting, the bolt-on configuration provides a rigid bus connection that resists vibration and movement in commercial and light industrial applications. This ensures consistent fault protection and minimizes the risk of loose connections over time.\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eBolt-on mounting for a rigid, vibration-resistant bus connection\u003c\/li\u003e \u003cli\u003eThermal-magnetic trip unit for stable, repeatable protection\u003c\/li\u003e \u003cli\u003e3-pole configuration suitable for 3-phase systems\u003c\/li\u003e \u003cli\u003e480V operation to handle higher-capacity branch circuits\u003c\/li\u003e \u003cli\u003e45A amperage rating for controlled, protective disconnecting of circuits\u003c\/li\u003e \u003cli\u003eCompatible with matching OEM load centers and panelboards\u003c\/li\u003e \u003cli\u003eA proven solution for residential, commercial, and light industrial environments\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eHow it works\u003c\/h2\u003e\n\u003cp\u003eThe built-in thermal-magnetic trip unit combines thermal overload protection with instantaneous magnetic trip action. This dual approach reacts quickly to short circuits while preventing nuisance trips during normal load swings, helping keep equipment up and running and reducing maintenance calls.\u003c\/p\u003e \u003ch2\u003eApplications and ideal use cases\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eProtecting branch circuits in panelboards and load centers within commercial spaces, industrial facilities, and mixed-use buildings\u003c\/li\u003e \u003cli\u003eRetrofits or upgrades to OEM-compatible panels that require 3-pole, 480V protection\u003c\/li\u003e \u003cli\u003eNew installations in 3-phase distribution networks where reliable overcurrent protection is essential\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch2\u003eSpecifications at a glance\u003c\/h2\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: HED43B045\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003eAmperage Rating: 45A\u003c\/li\u003e \u003cli\u003eVoltage Rating: 480V\u003c\/li\u003e \u003cli\u003eNumber of Poles: 3\u003c\/li\u003e \u003cli\u003eMounting Style: Bolt-on\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoose the Siemens HED43B045 for a robust, reliable solution that aligns with standard panelboard designs while delivering precise, predictable protection for 3-phase 480V systems. When reliability matters in electrical distribution, this bolt-on breaker from AmpState provides the performance you can trust day in and day out.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349801488546,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens-hed43b045-45-a-480-v-3-pole-bolt-on-circuit-breaker-205.webp?v=1788729901","url":"https:\/\/www.ampstate.com\/products\/siemens-hed43b045-45a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}