{"product_id":"square-d-mxl368001212","title":"Square D MXL368001212 800A 3-Pole 600 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D MXL368001212 800A 3-Pole 600 V Circuit Breaker — a purpose-built protection device for demanding commercial and industrial electrical systems. When uptime and safety matter, this 800-amp main breaker delivers decisive, reliable overcurrent protection for three-phase power distribution up to 600 volts.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eWhy this 3-Pole design matters\u003c\/strong\u003e. With three independent conductors switching together, the MXL368001212 prevents dangerous open-phase conditions and helps maintain balanced loads across motors, pumps, and other three-phase equipment. In environments where large equipment starts or heavy cycling occurs, this configuration supports safer startups and more stable protection coordination.\u003c\/p\u003e \u003ch3\u003eKey benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eHigh-current capability\u003c\/strong\u003e — 800 A rating handles substantial load demands common in medium-to-large facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole protection\u003c\/strong\u003e — simultaneous tripping of all phases enhances safety and reduces fault propagation in multi-phase systems.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e600 V maximum rating\u003c\/strong\u003e — suitable for a wide range of industrial power distributions and commercial installations.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eTrusted Square D reliability\u003c\/strong\u003e — part of a long-standing lineup designed for robustness in challenging environments.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact part compatibility\u003c\/strong\u003e — Part Number MXL368001212 ensures proper fit within compatible Square D panels and enclosures designed for 800A devices.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis breaker is ideal for upgrading or replacing main protection in large electrical panels, data centers, manufacturing floors, HVAC plants, and other facilities where a single, dependable main disconnect is essential. It helps safeguard wiring, cabling, and motors from overloads while supporting clear fault indication and prompt isolation of the affected circuit.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003ePractical considerations\u003c\/strong\u003e. Verify that your panel enclosure and bus configuration are compatible with a 3-pole, 800 A device and that the overall system voltage aligns with the 600 V rating. Follow local electrical codes and manufacturer installation guidelines for torque, wiring, and clearance to ensure a safe, compliant setup. For projects aiming to simplify protection strategy in high-load environments, this Square D breaker provides a decisive, high-capacity solution with a straightforward, reliable form factor.\u003c\/p\u003e \u003cp\u003e\u003cstrong\u003eSpecifications at a glance\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eCurrent rating: 800 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage rating: 600 V\u003c\/li\u003e \u003cli\u003ePart number: MXL368001212\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46423098818722,"sku":"MXL368001212","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-mxl368001212-800a-3-pole-600-v-circuit-breaker-554.webp?v=1789269494","url":"https:\/\/www.ampstate.com\/products\/square-d-mxl368001212","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}