Square D FA100X 100A 3-Pole 600 V Circuit Breaker

Protect your three-phase power distribution with the Square D FA100X 100A 3-Pole 600 V Circuit Breaker. Part number FA100X, this three-pole device is engineered to safeguard wiring, motors, and panels in commercial and industrial environments by quickly interrupting fault currents in systems up to 600 V. With a 100 A rating, it delivers dependable protection while maintaining system efficiency across all three phases.

Key specifications

• Current rating: 100 A
• Poles: 3
• Voltage rating: up to 600 V
• Part number: FA100X
• Type: 3-pole circuit breaker

Why this matters

In a three-phase system, faults can cause phase imbalance, overheating, and equipment damage. The FA100X provides coordinated protection by simultaneously disconnecting all three phases, helping prevent downstream damage and improving overall safety. Its 100 A rating is ideal for feeders and moderate motor loads, reducing the risk of nuisance trips while maintaining reliable protection for your infrastructure.

Ideal use cases

• Commercial and industrial panels servicing three-phase motors, compressors, conveyors, HVAC equipment, and similarly rated loads
• Main disconnects in three-phase distribution boards up to 600 V
• Retrofit applications within existing Square D installations that require a dependable 3-pole, 100 A protection device

What to consider when purchasing

Ensure your panel accepts FA100X 3-pole breakers and that your system voltage aligns with the 600 V rating. For proper installation, pair this breaker with appropriately rated conductors and follow applicable electrical codes. A licensed electrician can confirm panel compatibility and installation requirements specific to your site.

Compared to other options

Choosing a 3-pole solution like the FA100X provides true three-phase protection, guaranteeing simultaneous disconnection of all phases during faults. This cohesive approach helps maintain balanced protection across the entire circuit, simplifying maintenance and improving long-term reliability within Square D distribution systems.

Ready for installation

With the FA100X, you’re selecting a trusted protective device designed to guard your electrical distribution against overloads and short circuits, ensuring safer, more reliable power delivery across your facility.