{"product_id":"siemens-hed43b125-125a-3p-480v-circuit-breaker","title":"Siemens HED43B125 125A 3P 480V Circuit Breaker, Bolt-On | AmpState","description":"\u003cdiv\u003eMeet the Siemens HED43B125 bolt-on circuit breaker—the dependable three-pole protection your panelboards, load centers, and electrical distribution networks rely on. With a 125 A rating and 480 V capability, this breaker is built to handle demanding, three-phase applications while keeping equipment safe and outages contained. \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eBolt-on installation\u003c\/strong\u003e: Quick, secure mounting in compatible Siemens panels, making retrofit work and routine maintenance smoother and downtime shorter.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e125 A, 3-pole, 480V\u003c\/strong\u003e: Precise protection for multi‑phase circuits, designed to manage medium‑to‑high power distribution without sacrificing reliability.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number stability\u003c\/strong\u003e: The HED43B125 carries a consistent catalog item, simplifying inventory management, maintenance planning, and retrofit sequencing.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit-ready and maintenance-friendly\u003c\/strong\u003e: Ideal when updating aging panels or coordinating replacements with existing gear—no need to disrupt current system architecture.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpState availability\u003c\/strong\u003e: Ready to ship, helping you keep projects on schedule and ensure timely replacements for critical infrastructure.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExpert compatibility support\u003c\/strong\u003e: Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit before you buy.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWho should consider the Siemens HED43B125?\u003c\/strong\u003e Facilities managers, electrical contractors, and plant engineers responsible for reliable power distribution in commercial or industrial environments. It’s especially valuable for retrofit projects where maintaining a known part number streamlines procurement, service history, and future maintenance.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical use scenarios\u003c\/strong\u003e:\n- Replacing aging breakers in panelboards or load centers that serve critical process lines.\n- Retrofitting existing electrical distribution with a trusted Siemens bolt-on solution to maintain consistent protection across the system.\n- Keeping a ready spare on hand for rapid service response and downtime reduction.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412491194530,"sku":"HED43B125","price":3423.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/siemens-hed43b125-125a-3p-480v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}