{"product_id":"schneider-electric-nsc400k3400k-circuit-breaker","title":"Schneider Electric | NSC400K3400K | Circuit Breaker | 400A | 3-Pole | 690V","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Schneider Electric NSC400K3400K circuit breaker — a robust, high-capacity protective device built for demanding industrial power distribution. With a 400 A rating, three poles, and a 690 V maximum, it’s engineered to safeguard feeders, motors, and critical circuits in challenging environments while maintaining reliable protection and system integrity.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eKey specifications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 400 A\u003c\/li\u003e \u003cli\u003ePoles: 3-Pole\u003c\/li\u003e \u003cli\u003eVoltage rating: 690 V\u003c\/li\u003e \u003cli\u003ePart reference: NSC400K3400K\u003c\/li\u003e \u003cli\u003eApplications: suitable for maintenance, retrofit, and replacement where exact spec alignment is required\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eWhy this Schneider Electric model stands out\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eExact-match replacement: Using the NSC400K3400K part number ensures mechanical fit and electrical coordination with your existing protection scheme, reducing downtime and rework.\u003c\/li\u003e \u003cli\u003eHigh-current, three-phase protection: Designed to reliably interrupt and protect 3-phase systems at 690 V, supporting safe operation of heavy feeders and motor loads.\u003c\/li\u003e \u003cli\u003eRetrofit-friendly for upgrades and maintenance: When upgrading aging panels or swapping out failed components, this unit provides a like-for-like solution that preserves system architecture.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eIdeal applications\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eIndustrial facilities with 400 A feeders on 690 V networks\u003c\/li\u003e \u003cli\u003eMotor control centers and distribution panels undergoing retrofit or component replacement\u003c\/li\u003e \u003cli\u003eNew installations requiring a precise, high-capacity 3-pole protection device within 690 V systems\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003e\u003cstrong\u003eFit and compatibility guidance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eBefore ordering, confirm fit and ratings for your specific installation. The NSC400K3400K part number is your best reference for compatibility with existing Schneider Electric equipment and for maintaining consistent protection coordination across the system.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical tips for installation and maintenance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eKeep the original documentation handy and verify wiring connections and mounting fits align with your panel’s guidelines\u003c\/li\u003e \u003cli\u003eRecord the replacement part number in your maintenance logs to streamline future service or part reorders\u003c\/li\u003e \u003cli\u003ePlan a controlled outage to test system performance after installation, verifying that protection operates as intended across all three phases\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Schneider Electric NSC400K3400K, you gain a dependable, high-capacity protective device that fits seamlessly into 690 V, three-phase infrastructure, simplifying maintenance, retrofit projects, and long-term reliability.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Schneider Electric","offers":[{"title":"Default Title","offer_id":46426883096738,"sku":"NSC400K3400K","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_63e470e9-d360-4ffe-a511-3550084c618c.png?v=1766907689","url":"https:\/\/www.ampstate.com\/products\/schneider-electric-nsc400k3400k-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}