{"product_id":"eh34040-square-d-eh-series-40a-3-pole-480y-277v-plug-in-circuit-breaker","title":"EH34040 | Square D EH Series 40A 3-Pole 480Y\/277V Plug-In Circuit Breaker","description":"\u003ch4\u003eDescription \u003c\/h4\u003e\n\u003cp data-end=\"870\" data-start=\"534\"\u003eThe Square D EH34040 is a three-pole molded case circuit breaker designed to provide reliable overcurrent and short-circuit protection in commercial electrical distribution systems. Rated at 40 amps and 480Y\/277 VAC, this breaker uses thermal-magnetic trip technology to deliver long-time and instantaneous protection. It is engineered for plug-in installation in compatible Square D NEH panelboards.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eTechnical Specifications \u003c\/h4\u003e\n\u003ctable style=\"width: 100%; height: 411.615px;\"\u003e\n\u003ctbody\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eNew\/Never Used Surplus\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eSquare D\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eCategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eCircuit Protection\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eEH34040\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eSubcategory\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eCircuit Breakers\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eEH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eProduct Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eMolded Case Circuit Breaker\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eFrame Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eEH\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eRated Current\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003e40 A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eNumber of Poles\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003ePhase\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eThree Phase\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eVoltage Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003e480Y\/277 VAC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eProtection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eThermal-Magnetic\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eInterrupting Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003e14 kAIC @ 277 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eConnection Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003ePlug-In\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eWire Size\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eAWG 14–2 Aluminum\/Copper\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eFunctions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003eLong-Time and Instantaneous (LI)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 39.2014px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 39.2014px;\"\u003e\u003cstrong\u003eAmbient Temperature Rating\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 39.2014px;\"\u003e40 °C\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eApplication\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003ePower Distribution\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"height: 19.6007px;\"\u003e\n\u003ctd style=\"width: 37.098%; height: 19.6007px;\"\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"width: 62.6828%; height: 19.6007px;\"\u003e3.0 lb (approx.)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch4\u003eInformation About EH34040\u003c\/h4\u003e\n\u003cp data-end=\"1460\" data-start=\"906\"\u003eThe EH34040 is part of Square D’s EH series of molded case circuit breakers, developed for compact branch circuit protection in low-voltage panelboard applications. This breaker incorporates a thermal-magnetic trip unit that protects circuits from overloads and short-circuit faults while maintaining stable operation. It is designed for three-phase electrical systems and supports both copper and aluminum conductors within a defined wire range. Built to meet UL and CSA requirements, the breaker is intended for dependable operation in controlled commercial and light industrial environments.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong data-start=\"1085\" data-end=\"1102\"\u003eKey Features:\u003cbr\u003e\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e40 Amp Current Rating: Provides accurate protection for three-phase branch circuits.\u003c\/li\u003e\n\u003cli\u003eThree-Pole Configuration: Ensures balanced protection across all phases.\u003c\/li\u003e\n\u003cli\u003e480Y\/277 VAC Rating: Suitable for common commercial power distribution systems.\u003c\/li\u003e\n\u003cli\u003eThermal-Magnetic Protection: Combines long-time overload and instantaneous trip functions.\u003c\/li\u003e\n\u003cli\u003ePlug-In Mounting Design: Enables secure installation in compatible NEH panelboards.\u003c\/li\u003e\n\u003cli\u003e14 kA Interrupting Rating: Rated for fault protection at 277 VAC.\u003c\/li\u003e\n\u003cli\u003eCopper and Aluminum Compatibility: Accepts conductors from AWG 14 to AWG 2.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe EH34040 delivers the reliability and precision required for commercial three-phase power distribution protection.\u003c\/p\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":51121511563562,"sku":"EH34040","price":855.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/0392\/4266\/files\/s-l1600_c2813a11-9e30-466c-aebb-5b3dcbb8ccb5.webp?v=1770292025","url":"https:\/\/iqelectro.com\/products\/eh34040-square-d-eh-series-40a-3-pole-480y-277v-plug-in-circuit-breaker","provider":"IQElectro","version":"1.0","type":"link"}