Westinghouse | RKL3400K | Circuit Breaker | 400A | 3-Pole | 600V | Bolt-On

Upgrade or maintain your high-demand electrical system with the Westinghouse RKL3400K Circuit Breaker. Designed for reliability in 3-phase, 600V applications, this 400A breaker provides a robust shield for industrial panels, commercial equipment, and service entrances where steady protection and quick isolation are essential.

Key specifications at a glance

• Amperage: 400A
• Poles: 3-Pole
• Voltage rating: 600V
• Mounting: Bolt-On
• Brand/Part: Westinghouse, RKL3400K

Why this Westinghouse breaker stands out

When your project demands a precise match for existing equipment, the RKL3400K delivers. Its bolt-on design simplifies field installation for retrofit or replacement in legacy panels, reducing downtime and ensuring secure, stable operation in demanding environments. The 3-pole configuration is ideal for balanced three-phase circuits, allowing synchronized protection across all phases and helping minimize arc-flash risk during maintenance.

Ideal use cases

• Maintenance and repairs in commercial/industrial electrical rooms where 3-phase 600V systems are standard
• Retrofits that require exact spec compatibility to maintain panel labeling and safety approvals
• Replacement of aging or failing breakers in service panels without redesigning the electrical layout

Installation and compatibility notes

Notes: Confirm fit and ratings before ordering. The part number is the best reference for compatibility. Use this as your guiding identifier when cross-checking against existing panels, bus configurations, and labeling. Since mounting styles and rating trees vary between panels, verify that your system’s voltage and current ratings align with 600V and 400A, and that the bolt-on mounting method matches your enclosure’s design.

Practical guidance for best results

• Before purchase, compare the RKL3400K against the panel’s documented requirements to avoid mismatches in trip ratings or mounting.
• Schedule replacement during planned outages to minimize production disruption and ensure safe handling of high-voltage components.
• Store and handle the breaker in a clean, dry environment to preserve integrity of the contact surfaces and mounting hardware.

Why choose Westinghouse for your protection needs

Westinghouse is trusted for durable, field-ready protection solutions designed to withstand industrial use. With the RKL3400K, you gain a proven mechanism to rapidly interrupt power, safeguard equipment, and support ongoing system reliability in 3-phase, high-voltage environments.