{"product_id":"schneider-electric-nb400l-circuit-breaker","title":"Schneider Electric | NB400L | Circuit Breaker | 400A | 3-Pole | 690V","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eSchneider Electric NB400L\u003c\/strong\u003e is a purpose-built circuit breaker designed for industrial power distribution. With a 400A rating across 3 poles at 690V, it’s engineered for demanding environments where reliability and precise compatibility matter. This device is ideal for maintenance, retrofit, and replacement projects that require exact specifications and a trusted manufacturer backing.\u003c\/p\u003e \u003ch3\u003eKey specifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage\u003c\/strong\u003e: 400 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePole configuration\u003c\/strong\u003e: 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating\u003c\/strong\u003e: 690 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart reference\u003c\/strong\u003e: NB400L\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication note\u003c\/strong\u003e: Best reference for compatibility; confirm fit and ratings before ordering\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy this NB400L stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e: The NB400L is the exact part number you’ll want when matching legacy or new panels that require a 400A, 3-pole, 690V solution. Using the correct part number minimizes retrofit risks and downtime.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eIndustrial-grade protection\u003c\/strong\u003e: Built to handle high-current electrical distribution, helping safeguard feeders and downstream equipment from faults while supporting smooth startup and shutdown sequences.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVendor assurance\u003c\/strong\u003e: From Schneider Electric, a brand with a long track record in reliable protective devices, ensuring consistent performance in critical applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use scenarios\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance swaps where a direct NB400L replacement is required to preserve panel design and wiring schemes.\u003c\/li\u003e \u003cli\u003eRetrofit projects upgrading or upgrading-updating industrial electrical feeders to maintain compatibility with existing gear and control logic.\u003c\/li\u003e \u003cli\u003eReplacement of failed or aging breakers in 3-Pole, 690V circuits where preserving system protection is essential.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical considerations and getting it right\u003c\/h3\u003e\n\u003cp\u003eBefore placing an order, verify that the NB400L matches the exact requirements of your panel or distribution board. The part number is the most reliable reference for compatibility, so cross-check it against schematics, bill of materials, and any manufacturer documentation for your installation. In high-voltage systems, ensure proper installation practices, adherence to safety standards, and appropriate coordination with upstream protective devices.\u003c\/p\u003e \u003ch3\u003eUsage tips for optimal results\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eUse NB400L in applications that strictly require a 400A, 3-pole, 690V protection device.\u003c\/li\u003e \u003cli\u003eKeep a spare NB400L on hand for proactive maintenance and rapid fault isolation during upgrades.\u003c\/li\u003e \u003cli\u003eDocument the exact part number in maintenance logs to streamline future replacements and audits.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eChoosing the Schneider Electric NB400L means aligning with a tested, compatible solution for demanding industrial environments. Confirm fit and ratings with your current panel specifications, and you’ll have dependable protection that supports safe, efficient power distribution.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":46426180681890,"sku":"NB400L","price":2010.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schneider-electric-nb400l-circuit-breaker-400a-3-pole-690v-980.webp?v=1789528580","url":"https:\/\/www.ampstate.com\/products\/schneider-electric-nb400l-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}