Cutler Hammer WMS4C20 - 20A, 415VAC, Circuit Breaker

When reliability and safety matter in industrial power distribution, the Cutler-Hammer WMS4C20 delivers trusted overcurrent protection you can count on. This 20A circuit breaker is designed to perform in demanding environments, guarding panelboards, switchboards, control panels, and OEM equipment from electrical faults while keeping downtime to a minimum. With a voltage rating up to 415VAC, it fits the needs of mid-to-high voltage distribution without compromising on protection speed or precision.

Key specifications

• Current rating: 20A
• Voltage rating: 415VAC
• Breaker type: Circuit Breaker
• Applications: Panelboards, switchboards, control panels, and OEM equipment

Why this WMS4C20 stands out

Designed for serious use in industrial and commercial settings, this Cutler-Hammer circuit breaker provides robust protection where it matters most—at the point of distribution and motor control. Its 20A rating paired with a 415VAC capacity ensures reliable interruption of fault currents, helping to prevent equipment damage, reduce fire risk, and minimize unplanned outages in your electrical distribution system.

Ideal applications

• Panelboards and switchboards within manufacturing facilities
• Control panels powering conveyors, automation equipment, or processing lines
• OEM equipment where dependable protection is part of the build specification
• Motor control centers and other high-demand distribution points

Practical deployment and use cases

Use the WMS4C20 as the primary protection point for circuits fed from 415VAC systems, ensuring quick isolation of faults to protect downstream devices. It’s a practical choice when you need a compact, reliable breaker that integrates with standard distribution hardware in both new installations and retrofits. Pair it with proper enclosure and wiring practices to maintain safe clearances and easy accessibility for testing and maintenance.

Installation and maintenance notes

• Verify that your electrical system operates within the 415VAC rating and that the load current does not exceed 20A for continuous operation.
• Follow manufacturer torque specifications for terminal connections to ensure reliable contact and minimization of resistance heating.
• Schedule regular inspections as part of a broader preventive maintenance plan to confirm uninterrupted protection and verify there are no signs of wear or overheating.

Choose the Cutler-Hammer WMS4C20 when you need dependable, industry-grade overcurrent protection that supports safe operation across distribution panels, motor control centers, and OEM equipment. It’s a practical, purpose-built solution for protecting critical electrical infrastructure in industrial and commercial environments.