Eaton WMZS1C20 - 20A, 277VAC, 1-Pole, Circuit Breaker

The Eaton WMZS1C20 is a dependable 20A, 277VAC, 1-Pole circuit breaker engineered for exacting industrial and commercial environments. Designed to deliver reliable overcurrent protection, it fits neatly into panelboards, switchboards, and control panels where single-phase control and safety are paramount.

Key features that matter in real-world deployments

• 20A, 277VAC rating tailored for commercial lighting, building automation, and 277V distribution networks.
• 1-Pole configuration offers streamlined protection for single-phase circuits, reducing complexity in larger electrical layouts.
• Flexibility for integration—intended for use in panelboards, switchboards, and control panels across industrial, commercial, and OEM applications.
• Reliable protection provides safe, predictable shutdown of circuits to safeguard wiring, devices, and motors in demanding environments.

Ideal applications and use cases

Whether you're upgrading an existing installation or integrating into new equipment, the WMZS1C20 delivers targeted protection where 277V systems are prevalent:

• Commercial lighting and building automation circuits powered from 277VAC distribution.
• Motor control centers and control panels that require dependable single-pole protection.
• OEM equipment where a compact, single-pole breaker simplifies wiring while maintaining safety and performance.
• Distribution panels in industrial facilities that rely on robust, straightforward overcurrent protection.

Why this breaker suits your system

Choosing the WMZS1C20 means opting for a device that aligns with real-world voltage needs and circuit demands. Its 1-Pole design minimizes footprint in crowded panels while still delivering the critical protection single-phase loads require. The 277VAC rating makes it especially well-suited for spaces like commercial interiors, manufacturing areas, and building service equipment where reliable protection across all 277V circuits matters.

Practical guidance for installation and compatibility

Use this breaker in applications that match its 20A/277VAC specifications and ensure the host panel or enclosure supports single-pole Eaton devices of this type. When maintenance is due, replace only with the same WMZS1C20 model or another Eaton device specified for 277V, 1-Pole operation to maintain optimal safety and system conformity.