{"product_id":"square-d-ehb14040-40a-1p-277v-circuit-breaker","title":"Square D EHB14040 Circuit Breaker, 40A, 1-Pole, 277V","description":"\u003cdiv\u003e\n\u003cp\u003eThe Square D \u003cstrong\u003eEHB14040\u003c\/strong\u003e Circuit Breaker is built for demanding industrial environments, delivering reliable protection for \u003cstrong\u003e277V\u003c\/strong\u003e circuits with \u003cstrong\u003e40 A\u003c\/strong\u003e of current on a single pole. As part of the On Circuit Breaker Rating \u003cstrong\u003eEHB\u003c\/strong\u003e family, this breaker is designed for service, maintenance, and replacement projects where dependable overcurrent protection matters most.\u003c\/p\u003e \u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e1-Pole, 277V operation\u003c\/strong\u003e—perfect for dedicated feeders, lighting circuits, and control feeds in commercial and industrial facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e40 A protection\u003c\/strong\u003e—sharp, predictable trip characteristics that guard equipment without unnecessary outages.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eRugged, field-ready design\u003c\/strong\u003e—engineered for durability in real-world installations and easier replacement during maintenance cycles.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart of the EHB series\u003c\/strong\u003e—a recognized solution for industrial panelboards and distribution equipment, with compatibility verified by part number.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear compatibility guidance\u003c\/strong\u003e—verify fit using the exact part number \u003cem\u003eEHB14040\u003c\/em\u003e and your voltage\/amperage requirements to ensure a proper match.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIdeal use cases include industrial electrical service upgrades, panel replacements, and routine maintenance on 277V distribution networks. This breaker provides consistent trip performance and straightforward replacement in existing Square D installations, helping keep critical systems like manufacturing lines, warehouses, and facility HVAC running smoothly.\u003c\/p\u003e \u003cp\u003ePractical tips for install and selection:\u003c\/p\u003e \u003cul\u003e \u003cli\u003ePower down the system and confirm the circuit voltage before installation.\u003c\/li\u003e \u003cli\u003eCross-check the part number \u003cstrong\u003eEHB14040\u003c\/strong\u003e against your panel labeling to ensure seamless mounting and correct trip curves.\u003c\/li\u003e \u003cli\u003eUse this breaker specifically where a 40A, 1-Pole, 277V protection device is required to prevent nuisance trips and protect connected equipment.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you need assistance confirming compatibility or matching the exact part number to your application, send us a message and we’ll help verify fit for your specific panel and load needs. \u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46415901229218,"sku":"EHB14040","price":460.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/square-d-ehb14040-circuit-breaker-40a-1-pole-277v-breakers-662.webp?v=1789209623","url":"https:\/\/www.ampstate.com\/products\/square-d-ehb14040-40a-1p-277v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}