{"product_id":"hyundai-electric-hbl-403-circuit-breaker-300a-440vac-42ka-free","title":"HYUNDAI ELECTRIC HBL-403 CIRCUIT BREAKER 300A 440VAC 42KA FREE","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the HYUNDAI ELECTRIC HBL-403 Circuit Breaker — a rugged, dependable protection device engineered for demanding electrical distribution across industrial, commercial, and high-demand residential environments. With its 300 A rating and 440 VAC operating capability, it’s built to handle intensive load profiles while keeping your systems protected from faults and overloads. This is more than a breaker; it’s a solid foundation for reliable power delivery in retrofit projects, upgrades, and maintenance replacements.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 300 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 440 VAC\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eInterrupting capacity:\u003c\/strong\u003e 42 kA\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSpaces \/ circuits:\u003c\/strong\u003e 403 circuit positions\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBrand:\u003c\/strong\u003e Hyundai Electric\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eModel:\u003c\/strong\u003e HBL-403\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this HBL-403 stands out\u003c\/h3\u003e\n\u003cp\u003eDesigned for real-world service needs, the HBL-403 delivers consistent protection in environments where downtime isn’t an option. Its robust construction and precise trip characteristics help prevent cascading faults, protect downstream equipment, and minimize maintenance interruptions. The 42 kA interrupting rating provides confidence to safely interrupt high-energy faults, while the 300 A rating supports substantial feeder loads without sacrificing protection accuracy. This unit is purpose-built for professionals who assemble, upgrade, or maintain complex electrical distributions.\u003c\/p\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003ePanel upgrades in aging facilities where a scalable, high-capacity breaker is required\u003c\/li\u003e \u003cli\u003eRetrofit projects that replace obsolete protection devices with modern, reliable components\u003c\/li\u003e \u003cli\u003eMaintenance replacement work to maintain system integrity and compliance\u003c\/li\u003e \u003cli\u003eService installations in industrial settings, commercial buildings, and demanding residential complexes\u003c\/li\u003e \u003cli\u003eStocking spares for rapid fault clearance and downtime reduction\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical benefits and outcomes\u003c\/h3\u003e\n\u003cp\u003eWith the HYUNDAI ELECTRIC HBL-403, you gain a circuit protection solution that aligns with serious load profiles and strict safety standards. Expect stable tripping behavior that matches actual fault conditions, clearer fault diagnostics for faster repair, and long-term reliability in harsh electrical environments. This breaker is a thoughtful choice for electricians, panel builders, and MRO teams who value predictable protection, easy integration into existing systems, and the peace of mind that comes with a trusted Hyundai Electric component.\u003c\/p\u003e \u003ch3\u003eTips for optimal use\u003c\/h3\u003e\n\u003cp\u003eBefore installation, verify compatibility with your panel framework and upstream protective devices. Ensure proper torque on connections and follow standard commissioning practices to confirm accurate trip curves. Use in configurations where high-energy faults are possible to maximize system safety and minimize downtime during protection events.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"HYUNDAI ELECTRIC","offers":[{"title":"Default Title","offer_id":46395783282850,"sku":null,"price":1536.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_bd526ec2-f109-446f-b7aa-0f8874a7d73a.png?v=1765492973","url":"https:\/\/www.ampstate.com\/products\/hyundai-electric-hbl-403-circuit-breaker-300a-440vac-42ka-free","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}