Westinghouse | RLM3400L | Circuit Breaker | 3-Pole | 600V

The Westinghouse RLM3400L circuit breaker is a purpose-built solution for three-phase protection in maintenance, retrofit, and replacement projects where exact specifications matter. With a 3-pole design and a 600V rating, this unit is engineered to safeguard your three-phase systems and keep critical equipment running smoothly.

• Poles: 3-Pole
• Voltage: 600V
• Part number: RLM3400L
• Brand: Westinghouse
• Compatibility note: The part number is the best reference for compatibility—confirm fit and ratings before ordering.

Why this matters in real-world setups: a 3-pole breaker protects all conductors in a three-phase circuit, helping to prevent unbalanced loads and potential damage to motors, drives, and control gear. The 600V rating ensures reliable performance in industrial and commercial electrical environments where higher voltage distribution is in play. This is not just a drop-in part—it’s a deliberate choice to preserve your system’s protection scheme with the exact specifications your panels expect.

Ideal use scenarios include:

• Maintaining existing three-phase protection in service panels during routine maintenance.
• Retrofitting older installations to restore proper trip protection without changing the overall panel architecture.
• Replacing worn or failed breakers in compatible Westinghouse configurations to minimize downtime and ensure consistent protection profiles.

How to verify compatibility and ensure safe replacement:

• Use the part number RLM3400L as the primary reference when checking catalogs, schematics, or service documentation.
• Match the panel’s voltage rating (600V) and the three-pole arrangement to avoid mismatches in protection and wiring schemes.
• Before purchase, cross-check any panel-specific requirements or approved breaker families to guarantee seamless interchangeability.

Practical considerations for installers and facility managers: this Westinghouse breaker is designed to integrate into systems that rely on precise, reliable three-phase protection. By selecting the exact RLM3400L model, you preserve the original protection logic, simplify future maintenance, and reduce the risk of compatibility issues during retrofits or replacements. If you’re building or upgrading a distribution panel that uses Westinghouse components, this 3-pole, 600V unit offers a confident path to continued safe operation and predictable performance.