Square D | FAP16090 | Circuit Breaker | 90A | 3-Pole | 600V

Meet the Square D FAP16090 Circuit Breaker—a 90-amp, 3-pole device designed for reliable protection in 600-volt, three-phase systems. Built for maintenance, retrofit, and replacement projects, this breaker is the exact reference you need when your panel requires a precise Square D-compatible component.

Key specifications

• Amperage: 90 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Part number: FAP16090

What makes THIS breaker stand out

Unlike generic substitutes, the Square D FAP16090 is engineered to align with Square D panel architectures and safety interlocks. The 3-pole configuration provides synchronized protection across all three phases, helping to prevent unbalanced faults in industrial or commercial electrical rooms. With the exact FAP16090 designation, you can be confident of compatibility in panels that specify this part for 90 A, 3-pole, 600 V protection.

Ideal use scenarios

• Replacing a failed 90 A three-pole breaker in existing Square D installations
• Retrofit projects upgrading protection for 600 V three-phase circuits
• Maintenance tasks where a precise, verified part number is required for compliance

Installation and compatibility tips

Before ordering, verify that your panel or enclosure requires the FAP16090 or a compatible Square D 3-pole, 600 V, 90 A breaker. The part number is the most reliable reference for compatibility, ensuring you don’t mismatch trip characteristics or mounting footprints. Install per manufacturer instructions and adhere to local electrical codes. If you’re stocking replacements, keep a spare in its original packaging to protect against corrosion and wear.