{"product_id":"eaton-wms1d20-20a-1p-277v-circuit-breaker","title":"Eaton WMS1D20 20A 1P 277V Circuit Breaker, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton WMS1D20\u003c\/strong\u003e is a single-pole, 20 ampere circuit breaker designed for reliable protection in panelboards, load centers, and electrical distribution systems. With a plug-on design, this 277V breaker makes installation quick and straightforward, helping you minimize panel downtime during replacements and upgrades.\u003c\/p\u003e \u003cp\u003eKey specifications at a glance:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eAmperage: 20 A\u003c\/li\u003e \u003cli\u003ePoles: 1\u003c\/li\u003e \u003cli\u003eVoltage: 277 V\u003c\/li\u003e \u003cli\u003eType: Plug-On circuit breaker\u003c\/li\u003e \u003cli\u003eManufacturer: Eaton\u003c\/li\u003e \u003cli\u003ePart Number: WMS1D20\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eWhy this breaker stands out for professionals:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003eFast, plug-on installation:\u003c\/strong\u003e Designed for quick snap-on mounting to compatible bus systems, reducing panel work and downtime on replacement projects.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eExact BOM compatibility:\u003c\/strong\u003e Ideal for keeping your spare inventory aligned with the original part number, ensuring seamless replacements and reducing misfits in the field.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable 277V protection:\u003c\/strong\u003e Specifically suited to commercial distribution circuits and lighting feeds that run on 277 volts, helping safeguard critical loads without over-constraining your panel design.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eSingle-pole protection:\u003c\/strong\u003e Delivers focused circuit protection for individual hot legs, supporting modular, scalable electrical distribution layouts in panelboards and load centers.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eBacked by AmpState availability:\u003c\/strong\u003e Ready to ship and readily cross-checked for compatibility—if you’re unsure about fit, a quick message helps confirm before you buy.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003ePractical use cases and scenarios:\u003c\/p\u003e\n\u003cul\u003e \u003cli\u003eReplacing a failed WMS1D20 in existing Eaton-based panelboards to maintain system continuity.\u003c\/li\u003e \u003cli\u003eStocking spare units for facilities with a large number of 277V lighting or distribution circuits, preserving BOM integrity for maintenance teams.\u003c\/li\u003e \u003cli\u003eInstalling in commercial spaces where quick, reliable plug-on breakers reduce downtime during electrical upgrades or reconfigurations.\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eThis Eaton WMS1D20 20A 1P 277V plug-on circuit breaker is a targeted, durable solution for professionals who value exact compatibility, ease of installation, and dependable circuit protection. If you need help confirming fit or matching a part number, simply reach out—we’re ready to help ensure you get the right replacement the first time.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46413647544482,"sku":"WMS1D20","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-wms1d20-20a-1p-277v-circuit-breaker-plug-on-ampstate-breakers-782.webp?v=1789073941","url":"https:\/\/www.ampstate.com\/products\/eaton-wms1d20-20a-1p-277v-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}