{"product_id":"eaton-hldb3400c-circuit-breaker","title":"Eaton | HLDB3400C | Circuit Breaker | 400A | 3-Pole | 600V","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Eaton HLDB3400C Circuit Breaker — a robust, 400A, 3-pole device rated for 600V, purpose-built for maintenance, retrofit, and replacement in demanding electrical distributions. If your goal is reliable overcurrent protection for high-current, three‑phase systems, this breaker delivers steady performance, precise coordination, and a trusted Eaton lineage for long‑term serviceability.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey compatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering. The \u003cem\u003eHLDB3400C\u003c\/em\u003e part number is the best reference for ensuring correct panel compatibility and seamless system integration.\u003c\/p\u003e \u003ch2\u003eWhat this means for your system\u003c\/h2\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current protection in 3‑phase layouts:\u003c\/strong\u003e 400A capacity across three poles ensures balanced protection across all phases in demanding industrial and commercial applications.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600V system compatibility:\u003c\/strong\u003e Designed for higher-voltage distribution scenarios, helping maintain safety and reliability in heavy-duty electrical environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMaintenance, retrofit, and replacement use:\u003c\/strong\u003e Ideal when upgrading, refurbishing, or replacing legacy breakers that match the HLDB3400C specifications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWho benefits most\u003c\/h3\u003e \u003cp\u003eEngineering teams, maintenance technicians, and facility managers responsible for large electrical rooms, industrial plants, and commercial facilities with 600V distribution will find this breaker a dependable option. It’s suited for retrofit projects where matching the HLDB3400C’s amperage, pole configuration, and voltage is essential to avoid downtime and ensure compatibility with existing panels.\u003c\/p\u003e \u003ch3\u003eUnique value you’ll notice\u003c\/h3\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eSpecification-driven compatibility:\u003c\/strong\u003e The HLDB3400C designation pinpoints a precise fit for systems that require a 400A, 3-pole, 600V solution, reducing the guesswork in replacement parts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted manufacturer continuity:\u003c\/strong\u003e Built to Eaton’s engineering standards, offering predictable trip characteristics and mechanical operation that align with other Eaton components in the same distribution network.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eStreamlined maintenance workflow:\u003c\/strong\u003e By using the exact part number reference, you simplify stocking, ordering, and panel audits, helping your team stay compliant and efficient.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical use cases\u003c\/h3\u003e \u003cul\u003e \u003cli\u003eReplacing a failed high-current breaker in a 3‑phase 600V panel without changing the surrounding wiring or bus configuration.\u003c\/li\u003e \u003cli\u003eRetrofits where existing equipment requires an HLDB3400C-compatible 400A, 3‑pole, 600V solution to restore full protection.\u003c\/li\u003e \u003cli\u003eNew installations in industrial facilities that standardize on Eaton components for consistent performance and serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eGuidance for installation and care\u003c\/h3\u003e \u003cp\u003eEnsure a qualified electrician handles installation. Always verify the panel’s voltage rating and the breaker's amperage and pole configuration against the HLDB3400C before integrating it into a live system. De-energize equipment, follow lockout\/tagout procedures, and consult manufacturer guidelines for torque specs and mounting procedures. Label the replacement clearly to support future maintenance and inspections.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46426446037154,"sku":"HLDB3400C","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-hldb3400c-circuit-breaker-400a-3-pole-600v-120.webp?v=1789579003","url":"https:\/\/www.ampstate.com\/products\/eaton-hldb3400c-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}