{"product_id":"eaton-cutler-hammer-ehb3040-40a-3p-circuit-breaker","title":"Eaton Cutler-Hammer EHB3040 40A 3P Circuit Breaker | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton Cutler-Hammer EHB3040 is a reliable 40 A, 3-pole circuit breaker engineered for everyday electrical work in panelboards, load centers, and electrical distribution systems. This unit shines in retrofit projects and maintenance planning where keeping the part number consistent is crucial for quick swaps and minimal downtime.\u003c\/p\u003e \u003ch3\u003eWhat makes the EHB3040 unique\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eStable part number for retrofit and maintenance\u003c\/strong\u003e—EHB3040 keeps your install consistent across replacements, reducing the risk of compatibility issues during service windows.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSolid 40-amp protection\u003c\/strong\u003e for multi-phase circuits—designed to reliably interrupt fault currents and protect equipment in three-phase distribution networks.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e3-pole design\u003c\/strong\u003e—ideal for three-phase panelboards and load centers, providing coordinated protection across all phases.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePanelboard and load center compatibility\u003c\/strong\u003e—built to integrate with standard Eaton distribution systems, simplifying stocking and onsite replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmpState availability\u003c\/strong\u003e—trusted sourcing with clear part identification to support inventory and procurement workflows.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal use cases\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit projects where the existing EHB3040 footprint and part number must be preserved for seamless maintenance planning.\u003c\/li\u003e \u003cli\u003eElectrical distribution upgrades in commercial, industrial, or multifamily applications that rely on dependable 3-phase protection.\u003c\/li\u003e \u003cli\u003eRoutine panelboard maintenance and component swaps that require a proven, manufacturer-backed 40 A breaker.\u003c\/li\u003e \u003cli\u003eNew installations that demand a trusted, standards-compliant breaker compatible with Eaton panelboards and load centers.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it helps you manage your electrical protection\u003c\/h3\u003e\n\u003cp\u003eThe EHB3040 provides precise circuit protection against overloads and faults, helping prevent damage to wiring and connected equipment. Its 3-pole configuration ensures synchronized disconnection across all phases, which is essential for balanced loads and safe shutdowns in three-phase systems. When planning maintenance or expansions, this breaker’s consistent part number simplifies ordering and compatibility checks, reducing downtime and guesswork.\u003c\/p\u003e \u003ch3\u003eSpecifications at a glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eManufacturer:\u003c\/strong\u003e Eaton Cutler-Hammer\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e EHB3040\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eType:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 40 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 3\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eApplications:\u003c\/strong\u003e Panelboards, load centers, electrical distribution\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvailability:\u003c\/strong\u003e Available from AmpState\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you need help matching a part number or confirming compatibility with your specific panelboard or load center, message us and we’ll help you confirm fit.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412403212450,"sku":"EHB3040","price":10.0,"currency_code":"CAD","in_stock":true}],"url":"https:\/\/www.ampstate.com\/products\/eaton-cutler-hammer-ehb3040-40a-3p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}