{"product_id":"square-d-fh36040-40a-600v-3-pole-plug-in-circuit-breaker","title":"Square D FH36040 - 40 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eMeet the Square D FH36040, a 40 A, 600 V, 3-pole plug-in molded case circuit breaker designed to safeguard modern electrical systems with precision and ease. Built for dependable branch circuit overcurrent and short-circuit protection, this unit fits seamlessly into panelboards and loadcenters, making upgrades and replacements straightforward.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast plug-in connection\u003c\/strong\u003e: designed for quick installation and hassle-free replacements in compatible OEM panelboards and loadcenters, minimizing downtime and service interruptions.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThermal-magnetic trip unit\u003c\/strong\u003e: delivers stable, repeatable protection across a wide range of currents and temperatures, balancing nuisance trips with strong short-circuit response.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole, 40 A, 600 V performance\u003c\/strong\u003e: ideal for 3-phase circuits common in commercial and light industrial environments, while still suitable for residential upgrades that require robust protection.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eOEM-compatible design\u003c\/strong\u003e: engineered to match the form and function of matching Square D panelboards and other OEM loadcenters, ensuring a reliable fit and proper trip coordination.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e: proven protection for branch circuits in panelboards and loadcenters across residential, commercial, and light industrial settings.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhat you get and how it helps\u003c\/h3\u003e\n\u003cp\u003eThe FH36040 provides immediate, reliable overcurrent protection for critical circuits. By combining rapid plug-in installation with a thermal-magnetic trip mechanism, it reduces downtime during panel maintenance and ensures consistent protection under varying load conditions. Its 3-pole configuration supports balanced, 3-phase applications, while the 40 A rating covers a broad range of branch circuits without overspec-ing your panel.\u003c\/p\u003e \u003ch3\u003eTechnical snapshot\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number:\u003c\/strong\u003e FH36040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage rating:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVoltage rating:\u003c\/strong\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting style:\u003c\/strong\u003e Plug-in\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplication:\u003c\/strong\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eNew installations that require quick, reliable plug-in protection in compatible panelboards\u003c\/li\u003e \u003cli\u003ePanel upgrades or replacements where OEM compatibility is essential for consistent operation\u003c\/li\u003e \u003cli\u003eResidential, commercial, and light industrial projects needing robust 3-pole circuit protection against overloads and faults\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003ePractical tips for maximum value\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eEnsure you’re installing the FH36040 in a panelboard or loadcenter that matches Square D’s plug-in design for a secure fit and proper trip function.\u003c\/li\u003e \u003cli\u003eWhen upgrading circuits, verify that the 600 V rating aligns with your system’s voltage requirements and that a 3-pole configuration matches your phase arrangement.\u003c\/li\u003e \u003cli\u003eAdhere to local electrical codes and follow best practices for panel maintenance. Replace damaged breakers promptly and keep spare compatible units on hand for minimizing downtime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWith the Square D FH36040, you gain a dependable, easy-to-service protective solution that aligns with OEM panel designs while delivering precise, dependable protection for a wide range of commercial and residential electrical environments.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355234652322,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-fh36040-40-a-600-v-3-pole-plug-in-circuit-breaker-ampstate-205.webp?v=1788744781","url":"https:\/\/www.ampstate.com\/products\/square-d-fh36040-40a-600v-3-pole-plug-in-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}