Eaton A21ENVSTR12 12A 1P Circuit Breaker, Plug-On | AmpState

Eaton A21ENVSTR12 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.

The 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.

Key Benefits

• Plug-On simplicity: fast, tool-efficient installation that connects directly to the panel bus without complex mounting.
• Reliable 12 A protection: precise overcurrent protection for circuits that require moderate current handling.
• 1-Pole design: compact, space-saving solution suited for single-circuit protection in distribution panels.
• Compatibility within Eaton ecosystems: part of a familiar lineup, facilitating smoother replacements and maintenance planning.
• Avalability from AmpState: purchase and support available through AmpState to simplify sourcing and compatibility confirmation.

Why This Model Stands Out

Unlike 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.

Use Cases and Ideal Applications

• Retrofit installations where panel compatibility is critical and a consistent part number is preferred.
• Maintenance planning for commercial and industrial distribution systems that rely on Eaton components.
• New construction or upgrades in panelboards and load centers requiring dependable 12 A, single-pole protection.

Specifications at a Glance

• Eaton
• Part Number: A21ENVSTR12
• Product Type: Circuit Breaker
• Amperage: 12 A
• Poles: 1 Pole
• Mounting Style: Plug-On

If 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.