Eaton WMZH1D20 20A 1-Pole 480 V Circuit Breaker

The Eaton WMZH1D20 20A 1-Pole 480 V Circuit Breaker is a dedicated protection device designed for high-voltage applications. With part number WMZH1D20, this 1-pole breaker delivers reliable interruption at up to 480 volts, safeguarding single‑conductor circuits and the equipment they power. Its compact, purpose-built design makes it a practical choice for industrial control panels, machine enclosures, and other high-voltage installations that demand dependable overcurrent protection.

Key features

• Current rating: 20 A — precise protection for branch circuits in 480 V systems
• Poles: 1 — protects a single hot conductor, simplifying protection schemes in single‑phase or segmented high‑voltage circuits
• Voltage rating: 480 V — suitable for standard high‑voltage industrial applications
• Compact, straightforward installation design that fits common panel and enclosure layouts
• Designed to interrupt fault currents quickly to minimize damage to wiring and connected equipment

Why this matters

In high‑voltage environments, choosing the right circuit breaker is critical for safety and uptime. The WMZH1D20 combines a precise 20 A rating with a robust 480 V capability, giving you targeted protection for workloads like industrial controls, conveyors, pumps, and other single‑phase equipment fed from higher voltage distribution. Quick interruption limits arc exposure, reduces downtime, and helps prevent cascading damage to downstream devices.

Ideal use cases

• Protecting single‑phase control circuits in 480 V industrial equipment
• Branch circuit protection for motors, pumps, and gear that run off high-voltage distributions
• Protection within electrical panels and enclosures where a compact, reliable 1‑pole solution is required

Installation and maintenance tips

• Match the breaker's voltage and current ratings to your system requirements (480 V, 20 A) and verify compatibility with your enclosure or panel
• Install by following applicable electrical codes and safety practices; ensure main power is secured before servicing
• Periodically inspect for signs of wear, corrosion, or loose terminals and replace like‑for‑like to maintain performance

What you get

The Eaton WMZH1D20 20A 1-Pole 480 V Circuit Breaker—a precise, dependable protection device designed to safeguard high‑voltage circuits and the equipment they power. Built for straightforward replacement and clear identification with the WMZH1D20 part designation, it helps streamline maintenance and inventory in industrial settings.