Westinghouse | MA3125S | Circuit Breaker | 125A | 3-Pole | 600V

The Westinghouse MA3125S circuit breaker delivers dependable overcurrent protection for three‑phase 600V systems, rated at 125A with a 3‑pole configuration. Designed for maintenance, retrofit, and replacement projects, this unit provides the precise specs needed to keep larger electrical panels operating safely and reliably.

Key specifications

• Amperage: 125 A
• Poles: 3‑Pole
• Voltage rating: 600 V

Why this matters for your electrical system

In commercial and industrial environments, a 3‑pole 125A breaker protects three‑phase circuits from overloads and short circuits, helping prevent equipment damage and downtime. The MA3125S is built to handle the demands of larger distribution panels while offering clear fault indication and reliable tripping behavior when thresholds are exceeded.

Ideal use cases

• Maintenance: replace worn or failing breakers to restore precise protection in your panel
• Retrofit: upgrade legacy systems to meet current protection standards without changing the panel architecture
• Replacement: keep spare parts on hand for quick, downtime‑reducing service

Fit, compatibility, and installation tips

The part number MA3125S is the best reference for compatibility. Always confirm fit and ratings against your specific panel catalog before ordering to ensure seamless replacement. When installing, follow all manufacturer instructions and local electrical codes, and consider having a licensed electrician perform the replacement to guarantee proper seating, connection torque, and electrical safety.