{"product_id":"abb-t5hd-4p-400a-circuit-breaker","title":"ABB | T5HD-4P-400A | Circuit Breaker | 400A | 4-Pole","description":"\u003cdiv\u003e\n\u003cstrong\u003eABB T5HD-4P-400A Circuit Breaker\u003c\/strong\u003e is a 400 A, four‑pole protection device engineered for reliable overcurrent protection in service entrances, distribution panels, and retrofit projects. When exact specifications matter, this part delivers a precise fit and consistent performance that electricians and panel builders trust. \u003cp\u003e\u003cstrong\u003eWhy this breaker stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eDesigned to support maintenance, retrofit, and replacement tasks, the T5HD-4P-400A provides the robust protection your electrical system requires without complicating your upgrade path. Its four-pole configuration is ideal for multi-wire and three‑phase applications where coordinated protection and clear isolation are essential.\u003c\/p\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 4‑Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eConfiguration:\u003c\/strong\u003e T5HD series molded-case circuit breaker suitable for panel or distribution board use\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility note:\u003c\/strong\u003e Confirm fit and ratings before ordering—the part number (T5HD-4P-400A) is the best reference for compatibility.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eUse cases and practical benefits\u003c\/h3\u003e\n\u003cp\u003eThis breaker is ideal for scenarios where you need a reliable, like-for-like replacement or a retrofit to support higher loads in an existing panel. Consider these common applications:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePanel maintenance:\u003c\/strong\u003e Swap in a matched 400 A, 4‑pole unit to restore protected circuits quickly and securely.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRetrofit projects:\u003c\/strong\u003e Upgrade to a 400 A capacity in panels that require four-pole protection to accommodate added loads or reconfigured layouts.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReplacement parts:\u003c\/strong\u003e Use the exact part number to ensure electrical characteristics align with your original equipment, preserving trip behavior and protection coordination.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility guidance\u003c\/h3\u003e\n\u003cp\u003eTo minimize downtime and ensure proper operation, verify the exact fit using the provided part number. While shopping, keep in mind:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eThe \u003cstrong\u003eT5HD-4P-400A\u003c\/strong\u003e designation identifies the correct amperage, pole count, and family type for most ABB panels and compatible assemblies.\u003c\/li\u003e \u003cli\u003eAlways compare the panel’s documented requirements and the breaker's ratings before finalizing the order.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you gain with ABB\u003c\/h3\u003e\n\u003cp\u003eChoosing this ABB circuit breaker means you’re selecting a component designed with dependable protection in mind, streamlined installation, and a clear path for future upgrades. It supports safe shutoff, predictable trip behavior, and dependable performance across demanding electrical environments.\u003c\/p\u003e \u003cp\u003eWith the ABB T5HD-4P-400A, you’ll have a precise, ready-to-install solution for maintaining, upgrading, or replacing essential protection in your electrical infrastructure.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"ABB","offers":[{"title":"Default Title","offer_id":46427147305122,"sku":"T5HD-4P-400A","price":4706.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a0994f42-7fad-49d1-911a-c2784022b8c9.png?v=1765492979","url":"https:\/\/www.ampstate.com\/products\/abb-t5hd-4p-400a-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}