{"product_id":"square-d-q4l3400-400a-3p-240v-circuit-breaker","title":"Square D Q4L3400 400A 3P 240V Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D Q4L3400 from AmpState—a rugged 400 A, 3-pole, 240 V circuit breaker designed for everyday electrical work. This device is built for panelboards, load centers, and electrical distribution, delivering dependable protection where it counts.\u003c\/p\u003e \u003cp\u003eFor maintenance teams, panel builders, and inventory planners who require a precise part-number match, the Q4L3400 provides fast, reliable replacements with no guesswork. When you need the exact Square D component you can trust, this breaker keeps your system safeguarded while simplifying your procurement process.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eExact part-number match: Q4L3400 is designed to fit Square D panelboards, load centers, and distribution panels, reducing compatibility headaches.\u003c\/li\u003e \u003cli\u003eHigh-capacity protection: 400 A line rating to handle demanding circuits with stable performance.\u003c\/li\u003e \u003cli\u003eThree-pole reliability: Robust three-pole design suitable for 240 V applications in distributed electrical systems.\u003c\/li\u003e \u003cli\u003eInventory-friendly: A dependable spare that's easy to stock and quick to deploy when downtime matters.\u003c\/li\u003e \u003cli\u003eDirect-for-purpose use: Ideal for new builds, retrofits, and service call replacements where a precise, manufacturer-muscle match matters.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eKey specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eManufacturer: Square D\u003c\/li\u003e \u003cli\u003ePart Number: Q4L3400\u003c\/li\u003e \u003cli\u003eProduct Type: Circuit Breaker\u003c\/li\u003e \u003cli\u003eAmperage: 400 A\u003c\/li\u003e \u003cli\u003ePoles: 3\u003c\/li\u003e \u003cli\u003eVoltage: 240 V\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMaintenance work where exact part-number compatibility saves time and reduces risk of misfits\u003c\/li\u003e \u003cli\u003ePanel builders incorporating reliable Square D components into distribution systems\u003c\/li\u003e \u003cli\u003eSpare inventory for service trucks and warehouses to minimize downtime on critical circuits\u003c\/li\u003e \u003cli\u003eRetrofits and upgrades in existing installations that require a precise 3P 240V protection device\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eCompatibility \u0026amp; installation tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eVerify that your panelboard or load center supports a 3-pole, 240 V configuration with Square D breakers.\u003c\/li\u003e \u003cli\u003eEnsure mounting and bus compatibility align with standard Square D installation practices for 3P devices.\u003c\/li\u003e \u003cli\u003ePower down the system and follow all safety procedures during replacement to protect personnel and equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eAvailable from AmpState. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46410975674530,"sku":"Q4L3400","price":8703.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-q4l3400-400a-3p-240v-circuit-breaker-ampstate-breakers-810.webp?v=1788998766","url":"https:\/\/www.ampstate.com\/products\/square-d-q4l3400-400a-3p-240v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}