{"product_id":"square-d-eh34040-circuit-breaker","title":"Square D | EH34040 | Circuit Breaker | 3-Pole | Plug-In","description":"\u003cdiv\u003e\n\u003cp\u003eIntroducing the Square D EH34040 Circuit Breaker — a purpose-built 3-pole plug-in solution engineered for dependable protection in compatible panels. Designed for maintenance, retrofit, and replacement projects, this breaker lets you restore reliable circuit interruption without changing your panel infrastructure.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e3-Pole Plug-In design\u003c\/strong\u003e enables straightforward installation in compatible Square D panels, simplifying upgrades or replacements.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart number EH34040\u003c\/strong\u003e serves as the most reliable reference for compatibility checks, helping you avoid mismatches during ordering.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eVersatile applications\u003c\/strong\u003e suited for routine maintenance, panel retrofits, or replacing aging breakers to maintain safety and performance.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eImportant note\u003c\/strong\u003e: \u003cem\u003econfirm fit and ratings before ordering\u003c\/em\u003e to ensure safe operation and uninterrupted protection in your electrical system.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy choose this EH34040 breaker? It combines Square D’s proven design with a plug-in format that minimizes downtime and simplifies service. It’s an ideal choice for technicians and facilities teams responsible for keeping commercial or industrial electrical systems up and running, especially when you’re matching existing specs and ensuring consistent protection across three-phase or multi-pole configurations. With the EH34040, you gain a reliable, easy-to-install solution that aligns with your panel’s protection scheme while preserving continuity in critical operations.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"Square D","offers":[{"title":"Default Title","offer_id":46424800297122,"sku":"EH34040","price":310.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/master_generic_a085eff1-75dd-47ee-b131-4c8df8f0489b.png?v=1765492976","url":"https:\/\/www.ampstate.com\/products\/square-d-eh34040-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}