Square D | FI36040CBA | Circuit Breaker | 40A | 3-Pole | 600V

The Square D FI36040CBA circuit breaker delivers dependable protection for 3‑phase electrical systems, rated up to 600V with a 40A trip capacity. Designed for maintenance, retrofit, and replacement projects, this unit ensures you can restore or upgrade panels with the exact specifications required.

• Amperage: 40A
• Poles: 3‑Pole
• Voltage rating: 600V
• Part number: FI36040CBA – the best reference for compatibility
• Manufacturer: Genuine Square D

Why this 3‑pole, 40A, 600V breaker stands out

As a genuine Square D component, the FI36040CBA is engineered to fit Square D panels and distribution systems with a precise form factor. The 3‑pole design makes it ideal for protecting three‑phase circuits and equipment common in industrial and commercial settings, helping to safeguard motors, feeders, and control circuits from overloads and short circuits. Its build and performance are aligned with Square D’s reliability standards, reducing the risk of compatibility issues during installation.

Ideal use cases

• Maintenance and retrofits in existing three‑phase switchgear and panel boards
• Replacement for failed or outdated FI36040CBA‑style breakers in compatible Square D systems
• Protection for industrial machinery, conveyors, and commercial electrical distribution that operate on 600V

Compatibility and ordering guidance

Before purchasing, confirm that the fit and ratings match your existing panel or equipment. The FI36040CBA part number is your most reliable reference for compatibility, ensuring proper mounting, electrical clearances, and trip characteristics in your setup.

Installation and safety notes

Power down the system and follow proper lockout/tagout procedures before replacement. Install only in panels and enclosures rated for 600V and designed to accept 3‑pole Square D breakers. If you’re replacing an old unit, ensure the new breaker aligns with the same trip curve and mounting style to maintain consistent protection.