{"product_id":"eaton-wmzt3d40","title":"Eaton WMZT3D40 40A 3-Pole 480 V Circuit Breaker","description":"\u003cdiv\u003e\n\u003cp\u003eThe Eaton WMZT3D40 40A 3-Pole 480 V Circuit Breaker is engineered to protect your three-phase power distribution with precision in demanding commercial and industrial environments. With the exact configuration and part number WMZT3D40, this breaker is built to integrate smoothly into Eaton-ready panels and distribution equipment, delivering dependable overcurrent protection when it matters most.\u003c\/p\u003e \u003ch3\u003eWhy this breaker stands out\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003e40 ampere rating\u003c\/strong\u003e provides targeted protection for feeders and motors without unnecessary disruption to normal operation.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eThree-pole design\u003c\/strong\u003e ensures simultaneous isolation of all three live conductors during a fault, reducing the risk of arcing and ensuring safer shutdown of three-phase equipment.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e480 V maximum operating voltage\u003c\/strong\u003e aligns with standard industrial three-phase systems, motors, and process equipment, helping you safely protect higher-voltage circuits.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eClear part identification\u003c\/strong\u003e by part number WMZT3D40 supports fast ordering, stocking, and maintenance in busy facilities.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePurpose-built for reliability\u003c\/strong\u003e—designed to handle the demands of ongoing industrial use, delivering consistent trip performance when protection is required.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eIdeal applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eThree-phase motor circuits on manufacturing lines, conveyors, and machine tooling\u003c\/li\u003e \u003cli\u003ePower distribution feeders for large HVAC systems and climate control networks\u003c\/li\u003e \u003cli\u003eIndustrial equipment mains in warehouses and distribution centers\u003c\/li\u003e \u003cli\u003eCritical loads in data centers or server rooms that run on 480 V three-phase power\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eHow it fits into your system\u003c\/h3\u003e\n\u003cp\u003eUse the WMZT3D40 where a 3-pole, 480 V protection device is required. It slots into appropriate Eaton panels and enclosures designed for WMZ-series breakers, helping maintain consistent protection across your electrical distribution. When wiring, follow standard NEC guidelines for conductor sizing and protection with a 40 A rating, and ensure secure torque on connection points to maintain reliability over time.\u003c\/p\u003e \u003ch3\u003ePractical considerations and tips\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eMatch this breaker to the corresponding Eaton panel family that accepts WMZ-style, three-pole units for seamless compatibility.\u003c\/li\u003e \u003cli\u003eUse as part of a coordinated protection scheme with upstream fuses or breakers to optimize fault clearing and minimize downtime.\u003c\/li\u003e \u003cli\u003eSchedule regular inspections of connections and trip performance to preserve reliability in harsh or variable environments.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e","brand":"Eaton","offers":[{"title":"Default Title","offer_id":46423632806050,"sku":"WMZT3D40","price":510.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-wmzt3d40-40a-3-pole-480-v-circuit-breaker-226.webp?v=1789321869","url":"https:\/\/www.ampstate.com\/products\/eaton-wmzt3d40","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}