{"product_id":"siemens-hed43b045l-45a-480v-3-pole-bolt-on-circuit-breaker","title":"Siemens HED43B045L - 45 A, 480 V, 3-Pole Bolt-On Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for dependable, high-performance protection in commercial and light industrial power distribution, the Siemens HED43B045L is a 45A, 480V, 3-pole bolt-on molded case circuit breaker. Designed to safeguard branch circuits in panelboards and load centers, it delivers durable operation, crisp trips, and a secure connection that stands up to vibration and demanding environments.\u003c\/p\u003e \u003ch3\u003eKey benefits that matter in the field\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSecure bolt-on mounting:\u003c\/strong\u003e A rigid bus connection minimizes movement and vibration, helping maintain consistent electrical contact and reducing the risk of loose connections over time.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit:\u003c\/strong\u003e Combines precise overload protection with fast short-circuit interrupting capability, delivering stable, repeatable protection across varying loads and fault conditions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole, 480V design:\u003c\/strong\u003e Ideal for three-phase distribution in commercial or light industrial settings, handling higher voltage systems with confidence and safe fault isolation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-friendly compatibility:\u003c\/strong\u003e Engineered to integrate with matching Siemens and OEM load centers and panelboards, ensuring a seamless fit and reliable performance out of the box.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications:\u003c\/strong\u003e Suitable for residential, commercial, and light industrial installations where robust branch-circuit protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Siemens\u003c\/li\u003e \u003cli\u003ePart number: HED43B045L\u003c\/li\u003e \u003cli\u003eType: Thermal-magnetic molded case circuit breaker (MCCB)\u003c\/li\u003e \u003cli\u003eAmperage rating: 45A\u003c\/li\u003e \u003cli\u003eVoltage rating: 480V\u003c\/li\u003e \u003cli\u003ePoles: 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 \u003ch3\u003eIdeal use cases and deployment scenarios\u003c\/h3\u003e\n\u003cp\u003eThe HED43B045L is well-suited for panelboards and load centers in commercial spaces such as offices, retail facilities, data rooms, and light industrial environments. Use it to protect motor feeders, lighting and receptacle circuits, or any three-phase distribution path where 480V availability necessitates reliable protection. Its bolt-on design is especially advantageous in installations where vibration resistance and long-term connection integrity are priorities, such as equipment rooms, mezzanines, or outdoor enclosures subject to environmental movement.\u003c\/p\u003e \u003ch3\u003eInstallation and compatibility tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify the breaker is compatible with your panelboard’s model and bus arrangement before installation.\u003c\/li\u003e \u003cli\u003eUse the recommended mounting hardware and tighten to the panelboard manufacturer’s specified torque to ensure a secure, vibration-resistant connection.\u003c\/li\u003e \u003cli\u003eFollow all applicable electrical codes and the panelboard’s installation guidelines when integrating this MCCB into a power distribution scheme.\u003c\/li\u003e \u003cli\u003ePair with matched Siemens or OEM load centers to maintain coordinated protection and electrical performance.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this Siemens breaker stands apart\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eDesigned for durability in demanding environments, with a bolt-on format that maintains solid electrical contact even under vibration or movement.\u003c\/li\u003e \u003cli\u003eThermal-magnetic protection delivers fast, predictable tripping for short circuits while preventing nuisance trips during normal loading fluctuations.\u003c\/li\u003e \u003cli\u003eThree-pole, 480V capability makes it a strategic choice for higher-voltage three-phase systems commonly found in commercial and light industrial facilities.\u003c\/li\u003e \u003cli\u003eSeamless OEM compatibility ensures a reliable fit with Siemens and compatible load centers, reducing retrofit complexity and unnecessary modifications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46349801521314,"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_24421759-fe08-4c29-9f0a-29a48c5b1744.png?v=1764157212","url":"https:\/\/www.ampstate.com\/products\/siemens-hed43b045l-45a-480v-3-pole-bolt-on-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}