Siemens WML23400RJ Circuit Breaker, 400A

When you need robust protection for industrial electrical service, the Siemens WML23400RJ Circuit Breaker stands out as a dependable choice. With a 400 A rating, it’s built for demanding service and replacement projects, from plant maintenance to panel upgrades.

Designed for industrial service and maintenance

The WML23400RJ is a heavy-duty circuit breaker engineered to protect main feeders and distribution panels in industrial environments. It combines Siemens engineering with reliable performance during equipment startups and routine switching operations, helping keep critical processes running smoothly.

Key features and practical advantages

• 400 A protective capacity: Provides essential overcurrent protection for high-load circuits in industrial settings.
• Part-number driven compatibility: Use the exact part number WML23400RJ to confirm fit and compatibility with your current panel, system, and control schemes.
• Maintenance-friendly replacement: Designed to simplify service work by matching common industrial protection configurations, reducing downtime during panel maintenance or component swaps.
• Industrial-grade reliability: Built for consistent performance in challenging environments, helping minimize unplanned outages.

What to check before you buy

To ensure a seamless upgrade or replacement, verify fit by part number and assess application requirements. Confirm your system's voltage, interrupting rating, and any panel-specific compatibility notes. If you need a quick fit check, reach out with the part number and application details and we’ll assist in validating compatibility.

Who benefits most

Maintenance engineers, facility managers, electrical distributors, and OEM integrators working on industrial electrical service projects will find the Siemens WML23400RJ a sturdy, reliable option for safeguarding critical power distribution.

Product details
Amperage: 400 A
Part Number: WML23400RJ
Product Type: Circuit Breaker