Westinghouse | NB31000S | Circuit Breaker | 1000A | 3-Pole | 600V

Meet the Westinghouse NB31000S circuit breaker—a high-capacity, three‑pole protection device built for demanding 3‑phase 600 V systems. With a 1000 A rating, it’s engineered to safeguard heavy electrical feeders, providing reliable interruption when faults occur while keeping your system safeguarded during routine operation.

• Amperage: 1000 A
• Poles: 3-Pole (three-phase protection)
• Voltage rating: 600 V
• Part reference: NB31000S

This NB31000S unit shines in maintenance, retrofit, and replacement scenarios where exact specifications matter. The 3‑pole design ensures simultaneous tripping across all phases, reducing the risk of phase imbalance and protecting downstream equipment from cascading faults in industrial, commercial, and large-residential electrical setups.

Key differentiators and benefits

• Confirm fit and ratings before ordering—the NB31000S part number is your best reference for matching components in your system.
• Efficient maintenance and replacements: Identical part reference simplifies stocking and installation, minimizing downtime during service intervals.
• Rugged, high-current protection: Designed to reliably interrupt heavy loads in 3‑phase, 600 V circuits, keeping your distribution paths protected under fault conditions.

Ideal for professionals upgrading panels, performing retrofits, or replacing aging breakers in factories, data centers, commercial facilities, and sizeable electrical installations, the NB31000S delivers predictable performance when it matters most.

Practical considerations for a smooth purchase and installation:

• Verify that your equipment supports 3‑pole, 600 V, 1000 A protection and that NB31000S aligns with your panel’s catalog or official compatibility list.
• Keep on-hand NB31000S units for rapid response during planned maintenance or unexpected outages.
• Follow appropriate wiring diagrams and torque specifications during installation to ensure safe, compliant operation.