{"product_id":"siemens-hed43b040l-40a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens HED43B040L - 40 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for demanding electrical distributions, the \u003cstrong\u003eSiemens HED43B040L\u003c\/strong\u003e is a 40 A, 3-pole bolt-on molded case circuit breaker rated for \u003cstrong\u003e480 V\u003c\/strong\u003e. Designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers, it combines rugged mounting with precise protection performance for commercial, light industrial, and residential installations where reliability is non-negotiable.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting\u003c\/strong\u003e: a rigid, vibration-resistant bus connection minimizes movement and stress on connections, helping maintain consistent protection even in dynamic panel environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: offers stable, repeatable protection by combining thermal overload sensing with an instantaneous magnetic trip for high-current fault conditions, reducing nuisance trips while staying responsive to genuine faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 480 V design\u003c\/strong\u003e: ideal for 3-phase distribution scenarios common in commercial spaces and light industrial equipment, delivering coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible housing\u003c\/strong\u003e: engineered to fit and function with matching Siemens OEM load centers and panelboards, ensuring smooth installation and reliable long-term performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: suited for panelboards and load centers in residential renovations, commercial electrical rooms, and light industrial distribution networks, where compact, reliable protection matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eTechnical specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart Number: \u003cstrong\u003eHED43B040L\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eType: \u003cstrong\u003eThermal-magnetic molded case circuit breaker\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eAmperage Rating: \u003cstrong\u003e40 A\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eVoltage Rating: \u003cstrong\u003e480 V\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eNumber of Poles: \u003cstrong\u003e3\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eMounting Style: \u003cstrong\u003eBolt-on\u003c\/strong\u003e\n\u003c\/li\u003e \u003cli\u003eApplication: Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eUse cases and practical benefits\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eUpgrade or retrofit of a 3-phase 480 V panel in commercial buildings, data centers, or light industrial facilities where reliable fault protection is essential.\u003c\/li\u003e \u003cli\u003eNew installations in panelboards and load centers that require a compact, bolt-on solution with robust vibration resistance for equipment rooms and mechanical spaces.\u003c\/li\u003e \u003cli\u003eApplications where consistent trip performance across ambient temperature variations is important, thanks to the thermal-magnetic protection profile.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the \u003cstrong\u003eSiemens HED43B040L\u003c\/strong\u003e means selecting a breaker designed to align with Siemens’ panelboard ecosystems, offering predictable protection curves, easy installation, and durable operation under real-world conditions. For engineers and electricians prioritizing safety, reliability, and panel compatibility, this 3-pole, 40 A unit is a thoughtfully engineered choice for 480 V distribution tasks.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349801455778,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/siemens_breaker_and_panel_9f27f39a-bbd1-4780-82d0-2af231f9709d.png?v=1764157209","url":"https:\/\/www.ampstate.com\/products\/siemens-hed43b040l-40a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}