Westinghouse | RLM3125L | Circuit Breaker | 125A | 3-Pole | 600V | Bolt-On

The Westinghouse RLM3125L is a rugged, bolt-on circuit breaker designed for demanding electrical panels that require precise spec matching. With a 125A rating and 3-pole configuration at 600V, this unit delivers dependable overcurrent protection while fitting seamlessly into bolt-on installations. Built for maintenance, retrofit, and replacement projects, it’s a reliable choice when you need to preserve panel integrity and protection without compromising performance.

What sets the RLM3125L apart

Designed to meet the exacting needs of industrial and commercial electrical systems, the RLM3125L emphasizes secure mounting, consistent trip behavior, and straightforward compatibility in bolt-on panel environments. Its three-pole design ensures comprehensive protection across all active conductors, making it ideal for applications where balanced protection and dependable operation matter most.

Key specifications

• Amperage: 125A
• Poles: 3-Pole
• Voltage rating: 600V
• Mounting type: Bolt-On
• Part reference: RLM3125L — best reference for compatibility

Ideal use cases

• Replacing a worn or failed bolt-on 3-pole breaker in panels that require 125A protection at up to 600V.
• Retrofit projects where existing equipment relies on the bolt-on mounting style for secure, vibration-resistant installs.
• Maintenance scenarios where matching the exact part number ensures consistent performance and predictable trip characteristics.

Installation and compatibility guidance

Before ordering, confirm the fit and ratings against your panel labeling. The part number is the best reference for compatibility, so match RLM3125L to the panel’s specifications and existing breakers. As with all bolt-on devices, ensure the mounting holes align with the panel’s bus structure and follow proper electrical safety procedures during installation. If you’re updating an older system or performing a retrofit, verify that the panel enclosure supports a 3-pole, 125A, 600V bolt-on device to maintain coherent protection across the circuit.

Care, reliability, and practical tips

• Store spares in a climate-controlled area to prevent corrosion and ensure smooth operation when needed.
• During maintenance, check for clean connections and secure mounting to minimize resistance and heat buildup.
• Keep records of the exact part reference (RLM3125L) for future replacements and service intervals.