Westinghouse | NBY3800 | Circuit Breaker | 3-Pole

The Westinghouse NBY3800 3-Pole Circuit Breaker is engineered for dependable protection in maintenance, retrofit, and replacement projects where exact specifications matter. With a 3-Pole configuration, this breaker provides multi-conductor protection in a single, integrated unit and serves as a precise, like-for-like upgrade in compatible panels. Always verify fit and ratings before ordering—the NBY3800 part number is your best reference for compatibility.

Precise compatibility for a seamless upgrade

Designed to align with original Westinghouse electrical systems, the NBY3800 3-Pole Circuit Breaker helps restore intended electrical performance after wear or component fatigue. Because compatibility hinges on the exact part number, using NBY3800 ensures you retain intended trip curves, protective characteristics, and panel compatibility. Prior to purchase, double-check the panel labeling and the breaker’s rated current and interrupting capacity to match your installation requirements.

Why this Westinghouse model stands out

• Genuine Westinghouse part—built to mirror the original electrical characteristics, delivering reliable protection and predictable performance.
• 3-Pole configuration—provides synchronized disconnection across three conductors, essential for certain multi-phase or multi-pole applications.
• Clear compatibility reference—the NBY3800 part number simplifies sourcing and reduces the guesswork during replacement or retrofit.
• Maintenance-friendly design—a practical solution for ongoing service needs, ensuring downtime is minimized and safety is preserved.

Typical use cases

• Replacing worn or tripped breakers in existing Westinghouse panels to restore original protection levels.
• Retrofit projects that require a precise 3-Pole replacement to support multi-conductor circuits.
• Emergency replacements where matching specifications help maintain system integrity and code compliance.

Installation and safety notes

• Always power down the main disconnect and follow local electrical codes when servicing panels.
• Verify the breaker’s current rating, voltage rating, and interrupting capacity align with the system requirements.
• Consult a licensed electrician if you’re uncertain about panel compatibility or proper installation procedures.

Specifications at a glance

• Poles: 3-Pole
• Part number: NBY3800
• Applications: Maintenance, retrofit, and replacement where matching specs are required
• Important: Confirm fit and ratings before ordering; use the NBY3800 reference for compatibility checks