Westinghouse | HFA3040 | Circuit Breaker | 3-Pole

The Westinghouse HFA3040 3-Pole Circuit Breaker is engineered for dependable protection in maintenance, retrofit, and replacement projects where a precise fit matters. When your panel requires a three-pole device, this breaker delivers robust, reliable performance with the exact pole configuration you need.

Why the HFA3040 stands out

• Three-pole protection—designed to safely interrupt all three hot conductors in multi-line or 3-phase applications, helping keep complex electrical systems protected.
• Maintenance-ready and retrofit-friendly—a practical choice for upgrading aging panels or swapping out worn breakers without overhauling your electrical infrastructure.
• Best compatibility reference—the part number HFA3040 is the most reliable guide for matching your panel’s requirements, minimizing guesswork in replacement scenarios.
• Specification-aligned—built to meet the specs required for Westinghouse environments, ensuring consistent performance when paired with the right panel.

What you need to know before buying

Before placing an order, verify that this is the correct fit for your panel by checking the panel labeling and cross-referencing with the HFA3040 part number. Confirm the appropriate ratings for your system so you maintain safe, code-compliant protection across your installation.

Ideal use cases

• Upgrading or replacing 3-pole breakers in existing Westinghouse panels that require this exact frame configuration.
• Retrofit projects where three conductors must be simultaneously protected in commercial or industrial electrical gear.
• Maintenance replacements to restore original protection levels without altering the panel’s design.

What you’ll get

• One Westinghouse HFA3040 3-Pole Circuit Breaker ready for installation in compatible panels.

Installation and safety tips

• Power down the main disconnect and verify absence of voltage before handling the breaker.
• Double-check panel compatibility by matching the part number (HFA3040) and ensuring the panel’s rating aligns with the breaker’s requirements.
• Install strictly according to local electrical codes and the panel’s manufacturer's guidelines, and use appropriate personal protective equipment.