{"product_id":"square-d-fhl36040-40a-600v-3-pole-circuit-breaker","title":"Square D FHL36040 - 40 A, 600 V, 3-Pole Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eEngineered for dependable protection in panelboards and load centers, the \u003cb\u003eSquare D FHL36040\u003c\/b\u003e is a compact \u003cb\u003e3-pole molded case circuit breaker\u003c\/b\u003e rated at \u003cb\u003e40 A\u003c\/b\u003e and up to \u003cb\u003e600 V\u003c\/b\u003e. Built to guard branch circuits against overcurrent and short-circuit events, this device delivers reliable, repeatable protection you can trust in demanding electrical environments.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cb\u003eSpace-efficient molded-case design\u003c\/b\u003e minimizes panel footprint and simplifies installation, helping you maximize space in complex panelboards.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eThermal-magnetic trip unit\u003c\/b\u003e provides stable, repeatable protection by responding to both overloads and instantaneous short-circuit conditions, reducing nuisance trips and enhancing safety.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e3-pole configuration\u003c\/b\u003e ensures simultaneous disconnection of all poles in three-phase systems, improving protection coordination and safety across your distribution network.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003e40 A at 600 V\u003c\/b\u003e rating makes it suitable for a range of residential, commercial, and light industrial applications, from lighting and receptacle circuits to small motor controls.\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eOEM-compatible\u003c\/b\u003e designed to pair with matching Square D loadcenters and panelboards, promoting straightforward replacements and reliable performance within existing systems.\u003c\/li\u003e \u003cli\u003eDesigned for \u003cb\u003ebranch circuit overcurrent and short-circuit protection\u003c\/b\u003e, helping protect wiring, devices, and equipment while maintaining system uptime.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eTechnical specifications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cb\u003eManufacturer:\u003c\/b\u003e Square D\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e FHL36040\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eType:\u003c\/b\u003e Thermal-magnetic molded case circuit breaker\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eAmperage Rating:\u003c\/b\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eVoltage Rating:\u003c\/b\u003e 600 V\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eNumber of Poles:\u003c\/b\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cb\u003eApplication:\u003c\/b\u003e Branch circuit overcurrent and short-circuit protection\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications and practical use\u003c\/h3\u003e\n\u003cp\u003eUse the FHL36040 in panelboards and loadcenters where a compact, reliable 3-pole protection device is needed for 3-phase distribution or multi-pole disruption scenarios. Its thermal-magnetic trip mechanism helps coordinate protection with other devices in the same system, reducing the risk of cascading failures during faults. Whether upgrading an aging panel or stocking a replacement for a dedicated Square D installation, this breaker integrates smoothly with compatible OEM equipment to maintain system integrity.\u003c\/p\u003e \u003cp\u003ePractical tips for use:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eVerify panelboard compatibility with the exact \u003cb\u003eSquare D\u003c\/b\u003e OEM lineup to ensure secure mounting and proper trip coordination.\u003c\/li\u003e \u003cli\u003eConfirm wire sizing and conduit allowances align with a \u003cb\u003e40 A\u003c\/b\u003e rating to maintain safe conductor protection.\u003c\/li\u003e \u003cli\u003eDocument the replacement with the part number \u003cb\u003eFHL36040\u003c\/b\u003e to maintain clear maintenance records and future serviceability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Amp State","offers":[{"title":"Default Title","offer_id":46355235897506,"sku":null,"price":710.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/schnieder_and_square_d_breaker_and_panel_5eefeb9d-dc9f-4489-a15e-99d69a92cd05.png?v=1764690659","url":"https:\/\/www.ampstate.com\/products\/square-d-fhl36040-40a-600v-3-pole-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}