{"product_id":"eaton-a21envstr12-12a-1p-circuit-breaker","title":"Eaton A21ENVSTR12 12A 1P Circuit Breaker, Plug-On | AmpState","description":"\u003cdiv\u003e\n\u003cp\u003e\u003cstrong\u003eEaton A21ENVSTR12\u003c\/strong\u003e is a 12A, 1-pole plug-on circuit breaker built for everyday electrical work. Designed for circuit protection in panelboards, load centers, and electrical distribution, this unit delivers reliable overcurrent protection where you need it most.\u003c\/p\u003e \u003cp\u003eThe A21ENVSTR12 shines in retrofit projects and maintenance planning thanks to its consistent part number. If you’re refreshing an existing installation or stocking replacement stock, you’ll appreciate the stability of the Eaton catalog number, which helps you locate the exact match quickly and keep service downtime to a minimum.\u003c\/p\u003e \u003ch3\u003eKey Benefits\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\n\u003cstrong\u003ePlug-On simplicity:\u003c\/strong\u003e fast, tool-efficient installation that connects directly to the panel bus without complex mounting.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eReliable 12 A protection:\u003c\/strong\u003e precise overcurrent protection for circuits that require moderate current handling.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003e1-Pole design:\u003c\/strong\u003e compact, space-saving solution suited for single-circuit protection in distribution panels.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eCompatibility within Eaton ecosystems:\u003c\/strong\u003e part of a familiar lineup, facilitating smoother replacements and maintenance planning.\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAvalability from AmpState:\u003c\/strong\u003e purchase and support available through AmpState to simplify sourcing and compatibility confirmation.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eWhy This Model Stands Out\u003c\/h3\u003e\n\u003cp\u003eUnlike generic substitutes, the A21ENVSTR12 is purpose-built for Eaton panelboards and distribution systems. Its plug-on architecture reduces installation time and minimizes field wiring complexity, helping technicians complete tasks faster and with fewer potential errors. For facilities managers, the ability to rely on a single, consistent part number across multiple panels translates into streamlined inventories and faster repairs.\u003c\/p\u003e \u003ch3\u003eUse Cases and Ideal Applications\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003eRetrofit installations where panel compatibility is critical and a consistent part number is preferred.\u003c\/li\u003e \u003cli\u003eMaintenance planning for commercial and industrial distribution systems that rely on Eaton components.\u003c\/li\u003e \u003cli\u003eNew construction or upgrades in panelboards and load centers requiring dependable 12 A, single-pole protection.\u003c\/li\u003e\n\u003c\/ul\u003e \u003ch3\u003eSpecifications at a Glance\u003c\/h3\u003e\n\u003cul\u003e \u003cli\u003e\u003cstrongmanufacturer:\u003e Eaton\u003c\/strongmanufacturer:\u003e\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePart Number:\u003c\/strong\u003e A21ENVSTR12\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eProduct Type:\u003c\/strong\u003e Circuit Breaker\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eAmperage:\u003c\/strong\u003e 12 A\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003ePoles:\u003c\/strong\u003e 1 Pole\u003c\/li\u003e \u003cli\u003e\n\u003cstrong\u003eMounting Style:\u003c\/strong\u003e Plug-On\u003c\/li\u003e\n\u003c\/ul\u003e \u003cp\u003eIf you need help matching this part number to your exact panel or confirming compatibility, simply message us. We’ll assist in verifying fit and ensuring you get the right Eaton A21ENVSTR12 for your application, with the confidence that AmpState has you covered.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"AmpState","offers":[{"title":"Default Title","offer_id":46412911935650,"sku":"A21ENVSTR12","price":10.0,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0666\/8094\/6850\/files\/eaton-a21envstr12-12a-1p-circuit-breaker-plug-on-ampstate-breakers-821.webp?v=1789033982","url":"https:\/\/www.ampstate.com\/products\/eaton-a21envstr12-12a-1p-circuit-breaker","provider":"Ampstate Electric Corporation","version":"1.0","type":"link"}