Westinghouse | HFD1045L | Circuit Breaker | 45A | 1-Pole | 277V

Meet the Westinghouse HFD1045L circuit breaker — a purpose-built, reliable solution for protecting single-pole circuits in 277-volt systems. With a 45-amp rating, this 1-pole device is designed for maintenance, retrofit, and replacement applications where exact compatibility matters, ensuring your electrical panel continues to run safely and efficiently.

Key specifications at a glance

• Amperage: 45A
• Poles: 1-Pole
• Voltage: 277V
• Part number: HFD1045L

Why choose the Westinghouse HFD1045L? This breaker is engineered to reliably interrupt fault currents in 277V circuits, helping protect wiring, reduce the risk of fire, and minimize downtime due to electrical faults. Its single-pole design makes it ideal for dedicated lighting runs and individual branch circuits common in commercial spaces, while its 45A rating accommodates higher-demand loads without compromising safety.

Ideal use cases

• Maintenance: Replace aging or worn breakers to restore protective performance without rewiring.
• Retrofit: Update electrical systems to safely manage upgraded 277V loads in existing panels.
• Replacement: Swap in a like-for-like breaker to maintain original circuit protection specifications after component wear.

Practical installation and compatibility tips

• Before ordering, confirm fit and ratings for your panel. The part number HFD1045L is the most reliable reference for compatibility.
• Ensure your panel supports a 1-Pole 277V, 45A breaker in the Westinghouse-compatible form factor.
• Installations should be performed by a qualified electrician in accordance with local codes and panel manufacturer guidelines.
• Keep a spare HFD1045L on hand for proactive maintenance, enabling quick, safe replacements and minimizing downtime.

Designed for longevity and dependable performance, the Westinghouse HFD1045L 45A 1-Pole 277V circuit breaker is your go-to solution for protecting critical circuits in commercial environments. Whether you’re safeguarding lighting runs, feeders, or dedicated branch circuits, this breaker delivers reliable overcurrent protection with straightforward installation and lasting value.