Westinghouse | RJ3100L | Circuit Breaker | 100A | 3-Pole | 600V

Meet the Westinghouse RJ3100L — a purpose-built circuit breaker designed for demanding 3‑phase protection in commercial and industrial panels. With a 100A rating, a 3‑pole configuration, and a 600V maximum, this unit delivers reliable overcurrent protection where it matters most, helping keep equipment safe and downtime to a minimum.

Built for maintenance, retrofit, and replacement projects, the RJ3100L is the precise part you want when exact specs matter. In field work, the part number is your best reference for compatibility, so keep RJ3100L on hand as you assess panel needs and matching ratings.

Key specifications

• Amperage: 100A
• Poles: 3-Pole
• Voltage rating: 600V
• Part number reference: RJ3100L

Why this matters

Choosing a Westinghouse RJ3100L means selecting a unit with proven reliability and consistent trip characteristics that align with established 3‑phase panels. The 3‑pole design ensures synchronized protection across all three conductors, which is essential for balanced loads and preventing phase-to-phase faults in motors, drives, and other industrial equipment.

Important ordering note: confirm fit and ratings before purchasing. The RJ3100L part number provides the most reliable compatibility reference, since panel configurations vary and exact matching is critical for safe operation.

Ideal use cases

• Maintenance on existing panels that require a 100A, 3-pole, 600V breaker.
• Retrofit projects to replace aging or worn breakers within Westinghouse-compatible systems.
• Replacement in service panels or panelboards where RJ3100L is specified by the manufacturer or panel data.

Practical tips: keep your panel model and the original part number on file. When in doubt, consult your panel’s documentation to verify that the 600V maximum, 100A rating, and 3‑pole configuration match the RJ3100L’s specifications. Always follow proper electrical safety practices and have a qualified electrician perform replacements.