Westinghouse | HFD1045 | Circuit Breaker | 45A | 277V

Introducing the Westinghouse HFD1045 Circuit Breaker—a precise 45A, 277V protective device designed for maintenance, retrofit, and replacement needs where exact specifications matter. This unit is identified by its part number, HFD1045, making compatibility checks straightforward and reliable.

Key specifications

• Amperage: 45 A
• Voltage rating: 277 V
• Part number: HFD1045
• Applications: Replacement, retrofit, and maintenance in compatible panels

Why this breaker stands out

The HFD1045 is purpose-built for 277V circuits, a common setup in commercial lighting and equipment networks. Its 45A rating provides targeted protection for moderate-load circuits, helping prevent overheating, faults, and unexpected outages. Relying on the exact part number HFD1045 ensures you’re selecting a unit that aligns with your panel’s design and safety standards—minimizing guesswork and installation delays.

Ideal use cases

• Replacing a failed or aging breaker in 277V circuits within commercial or industrial panels
• Retrofit projects where the panel requires a specific HFD1045 45A breaker
• Routine maintenance checks to ensure continuous overcurrent protection for critical lighting and equipment circuits

Fit, compatibility, and installation tips

Before ordering, verify that your panel supports the 277V rating and that the HFD1045 is the correct match for your enclosure. Use the part number as the primary reference for compatibility. When installing, follow standard electrical safety practices and refer to your panel’s labeling to confirm proper fit. If there’s any doubt about compatibility or ratings, consult a licensed electrician to ensure a proper, code-compliant installation.

What you gain

• Trusted 45A protection for 277V circuits, reducing the risk of overloads
• Clear, reliable compatibility reference through the HFD1045 part number
• Streamlined replacement and maintenance workflow for electrical panels