{"product_id":"square-d-lal3640031m-circuit-breaker","title":"Square D | LAL3640031M | Circuit Breaker | 400A | 3-Pole","description":"\u003cdiv\u003e\n\u003cp\u003ePowerful protection for demanding electrical systems, the Square D LAL3640031M is a 400A, 3-Pole circuit breaker designed for maintenance, retrofit, and replacement tasks where exact specifications matter. Built by Square D, this unit provides reliable, coordinated disconnection across three phases when a fault occurs, helping safeguard downstream equipment and keeping downtime to a minimum.\u003c\/p\u003e \u003cp\u003eUse this part number as your compatibility beacon: \u003cstrong\u003eLAL3640031M\u003c\/strong\u003e. While shopping, confirm fit and ratings before ordering—the part number is the most reliable reference for matching panels and bus configurations.\u003c\/p\u003e \u003ch3\u003eKey advantages of the LAL3640031M\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e400A protection\u003c\/strong\u003e for high-current feeders and main circuits, ensuring robust protection for critical loads.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e suitable for three-phase systems, with a common-trip mechanism to shut down all phases simultaneously for safe service and maintenance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePrecise compatibility\u003c\/strong\u003e identified by part number, simplifying sourcing and reducing the risk of mismatched replacements in Square D panel systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile for retrofit and replacements\u003c\/strong\u003e—a practical choice when upgrading existing installations or restoring uptime after faults.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliability in demanding environments\u003c\/strong\u003e—designed to endure continuous operation in commercial and industrial applications.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eApplications and use cases\u003c\/h3\u003e\n\u003cp\u003eIdeal for large feeders, main service upgrades, and retrofits in commercial, industrial, and data-center environments. Use cases include replacing aging breakers in Square D panels, upgrading to handle higher loads, or configuring a three-phase protection scheme for motors and heavy equipment. The 3-Pole configuration supports coordinated protection across all phases, reducing the risk of phase imbalance and equipment damage.\u003c\/p\u003e \u003ch3\u003eInstallation and safety considerations\u003c\/h3\u003e\n\u003cp\u003eInstallation should be performed by a qualified electrician following local electrical codes. Before any work, verify that power is isolated and that the panel is suitable for a 400A, 3-Pole device. Follow proper torque specifications for mounting and ensure clear labeling of circuit protections to support maintenance and emergency response. Keep the installation environment clean and dry to preserve performance over time.\u003c\/p\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrong amperage\u003e: 400A\u003c\/strong\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003epoles\u003c\/strong\u003e: 3-Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eseries\u003c\/strong\u003e: Square D LAL family\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003epart reference\u003c\/strong\u003e: LAL3640031M\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ebest practice\u003c\/strong\u003e: confirm fit and ratings against panel data sheet prior to purchase\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eFor anyone upgrading a three-phase electrical system, the LAL3640031M offers a reliable, compatible solution that aligns with Square D’s panel ecosystems. By matching the correct part number, you simplify sourcing, reduce compatibility risk, and ensure robust protection for high-current applications.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46425674907810,"sku":"LAL3640031M","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-lal3640031m-circuit-breaker-400a-3-pole-427.webp?v=1789439737","url":"https:\/\/www.ampstate.com\/products\/square-d-lal3640031m-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}