Eaton WMZS3B30 - 30A, 480VAC, Miniature Circuit Breaker (MCB)

Eaton WMZS3B30 is a 30A, 480VAC Miniature Circuit Breaker (MCB) designed to shield electrical systems from overcurrent while keeping critical processes running smoothly.

Engineered for panel environments, this MCB fits panelboards, switchboards, control panels, and OEM equipment, making it a versatile choice for a range of industrial, commercial, and automation installations.

What makes the WMZS3B30 stand out

• Reliable overcurrent protection at 480VAC: With a 30A rating, it quickly detects and interrupts faults, safeguarding wiring and connected equipment in high-voltage distribution networks.
• Module-friendly, straightforward installation: Designed to integrate into standard electrical panels and motor control centers, helping you optimize space without compromising protection.
• Industrial-grade durability: Built for consistent performance in demanding environments typical of plant floors and OEM equipment racks.
• Versatile applicability: Suitable for distribution panels, machine control centers, and OEM configurations where dependable protection matters most.

Practical use cases

Scenario 1: In a manufacturing line, the WMZS3B30 protects feeder circuits feeding motors and drives, preventing outages from overloads and short circuits. Scenario 2: In a control cabinet for packaging equipment, it provides fast, predictable tripping to minimize downstream damage while keeping operators safe. Scenario 3: In a switchboard upgrade project, it delivers modern overcurrent protection at the correct voltage and current rating, extending the life of wiring and downstream devices.

How to evaluate and install

• Compatibility Ensure your system operates at 480VAC and requires 30A protection. This MCB is designed for use in Eaton-compatible panelboards, switchboards, and OEM assemblies.
• Installation tips Follow your panel manufacturer’s guidelines and torque specifications for terminal connections, and have a qualified electrician complete installation and testing.
• Maintenance and testing Regularly test protection devices as part of preventive maintenance to ensure proper operation over time.

Why choose Eaton for overcurrent protection

With decades of engineering experience behind every MCB, Eaton delivers dependable, safe, and reliable protection for distribution panels and motor control centers. The WMZS3B30 combines precise current rating with dependable trip characteristics and a familiar, technician-friendly form factor that speeds commissioning and reduces risk.