Eaton WMS1D20 20A 1P 277V Circuit Breaker, Plug-On | AmpState

Eaton WMS1D20 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.

Key specifications at a glance:

• Amperage: 20 A
• Poles: 1
• Voltage: 277 V
• Type: Plug-On circuit breaker
• Manufacturer: Eaton
• Part Number: WMS1D20

Why this breaker stands out for professionals:

• Fast, plug-on installation: Designed for quick snap-on mounting to compatible bus systems, reducing panel work and downtime on replacement projects.
• Exact BOM compatibility: Ideal for keeping your spare inventory aligned with the original part number, ensuring seamless replacements and reducing misfits in the field.
• Reliable 277V protection: Specifically suited to commercial distribution circuits and lighting feeds that run on 277 volts, helping safeguard critical loads without over-constraining your panel design.
• Single-pole protection: Delivers focused circuit protection for individual hot legs, supporting modular, scalable electrical distribution layouts in panelboards and load centers.
• Backed by AmpState availability: Ready to ship and readily cross-checked for compatibility—if you’re unsure about fit, a quick message helps confirm before you buy.

Practical use cases and scenarios:

• Replacing a failed WMS1D20 in existing Eaton-based panelboards to maintain system continuity.
• Stocking spare units for facilities with a large number of 277V lighting or distribution circuits, preserving BOM integrity for maintenance teams.
• Installing in commercial spaces where quick, reliable plug-on breakers reduce downtime during electrical upgrades or reconfigurations.

This 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.