Eaton WMS1B10 10A 1P 277V Circuit Breaker, Plug-On | AmpState

The Eaton WMS1B10 is a compact, plug-on, single-pole circuit breaker designed to protect circuits within panelboards, load centers, and electrical distribution systems. With a 10-amp rating and a 277-volt operating specification, this device is built to deliver reliable, straightforward overcurrent protection in commercial and light industrial environments. Its plug-on design means quick, secure installation that helps minimize panel downtime during replacements or upgrades.

Key specifications at a glance

• Manufacturer: Eaton
• Part number: WMS1B10
• Amperage: 10 A
• Poles: 1 Pole
• Voltage: 277V
• Type: Plug-On

Why this breaker stands out

This WMS1B10 single-pole breaker is purpose-built for panelboards, load centers, and distribution panels where dependable short-circuit and overload protection is essential. Its plug-on design simplifies installation, enabling faster replacements and easier maintenance in busy electrical rooms. The 277V rating makes it suitable for commercial lighting and power distribution scenarios common in office buildings, retail spaces, and other facilities that rely on robust, straightforward protection for each branch circuit.

Ideal use cases

• Replacement projects where the BOM must stay aligned with the original part number (WMS1B10) to ensure compatibility with existing enclosures and bus arrangements.
• Stocking spares in maintenance inventories to minimize downtime when a circuit breaker trips or fails.
• Retrofits or upgrades of panelboards and load centers that require a plug-on, 1P 10A 277V protection device.
• New installations in commercial spaces where a reliable, easily installed breaker is part of a broader distribution strategy.

Practical considerations and tips

Before ordering, confirm that your equipment matches the WMS1B10’s plug-on, 1-pole, 277V design to ensure seamless fit. The plug-on format is designed for straightforward snap-in installation, reducing complexity during panel work. If you’re unsure about compatibility with a specific Eaton panel or your existing BOM, AmpState offers assistance to verify fit and quarterback the replacement process.

Buying with confidence

AmpState stocks the Eaton WMS1B10 10A 1P 277V Circuit Breaker for quick access when you’re updating or maintaining electrical systems. If you need help matching a part number or confirming compatibility, simply reach out—the AmpState team will help you confirm fit.