Westinghouse | RLM3150L | Circuit Breaker | 150A | 3-Pole | 600V

Meet the Westinghouse RLM3150L circuit breaker—a purpose-built, three-pole protective device designed to safely interrupt three-phase power in 600V systems. With a 150A rating, this breaker is crafted for reliability in maintenance, retrofit, and replacement projects, helping keep critical equipment and systems protected and operating smoothly.

Key specifications

• Part number: RLM3150L
• Amperage: 150A
• Poles: 3-Pole
• Voltage rating: 600V
• Applications: maintenance, retrofit, and replacement in compatible panels

Why this Westinghouse breaker stands out

The RLM3150L is more than a generic replacement. It’s designed to align with Westinghouse panel systems and other panels that specify 3-pole, 600V protection. This ensures consistent performance across your three-phase distribution setup, with a focus on dependable interrupt capability for medium- to large-load circuits such as motors, compressors, and HVAC feeders.

Use cases and scenarios

• Replacing a failed 3-pole, 600V breaker in a three-phase distribution panel to restore circuit protection for critical equipment.
• Retrofit projects where you need to match exact amperage, voltage, and form factor to upgrade or repair existing installations.
• Maintenance planning with a clearly identified part reference to minimize compatibility questions and downtime.

Compatibility and installation notes

Always confirm fit and ratings before ordering. The part number RLM3150L is the best reference for compatibility with your panel. Review your panel’s documentation and bus configuration to ensure correct fitment and safe operation. When installing, follow standard electrical practices and applicable safety guidelines to ensure secure terminations and reliable performance in 600V three-phase systems.

For anyone maintaining or upgrading a 600V three-phase electrical setup, the Westinghouse RLM3150L 150A 3-Pole circuit breaker offers a straightforward, dependable solution that aligns with established panels and protects essential equipment with clear, practical performance in real-world conditions.