Eaton WMZT1D20 20A 1-Pole Circuit Breaker Potential Transformer

Meet the Eaton WMZT1D20 — a precise 20A, 1-pole circuit breaker designed to protect a single branch circuit with dependable performance. This model carries the Part Number WMZT1D20, reflecting Eaton’s commitment to compatible, high-reliability protection for both residential and light commercial panels.

What makes this breaker stand out

• 20-amp, 1-pole protection — ideal for safeguarding a dedicated circuit such as lighting or outlets fed from a single hot conductor.
• Part Number WMZT1D20 — exact replacement for compatible Eaton installations, ensuring straightforward installation and consistent fit.
• Compact, panel-friendly design — engineered to slip into standard panelboards without crowding neighboring spaces.
• Brand you can trust — backed by Eaton’s engineering pedigree for reliable interruption and long-term performance.
• Measurement-friendly applications — suitable for electrical systems that utilize potential transformers for monitoring or metering, helping integrate protection with measurement infrastructure.

Why protection matters in your system

Overcurrent events can damage wiring, outlets, and devices. The WMZT1D20 delivers fast, reliable interruption when a fault or overload occurs, helping prevent overheating and potential fire hazards. A 1-pole configuration focuses protection on a single circuit, making it a practical choice for streamlined panel layouts and targeted protection goals.

Use cases and scenarios

• Replacing a worn or failed 1-pole breaker in an Eaton panel with the exact WMZT1D20 model to preserve performance characteristics.
• Installing a dedicated 20A circuit in a commercial or residential setting where a single hot conductor requires protection.
• Maintaining consistent panel compatibility in systems that use potential transformers for monitoring, ensuring protection aligns with measurement equipment.

Practical tips for installation and maintenance

Before you replace or install, power down the panel and follow standard safety procedures. Verify that the panel accepts WMZT1D20 20A 1-pole breakers and keep the part number handy for maintenance logs. Regularly inspect the breaker after a fault event to ensure it reset reliably and continues to fit securely in the bus bar.