Square D FA34040 - 40A, 3-Pole, Molded Case Circuit Breaker

Designed for reliability in demanding electrical environments, the Square D FA34040 is a 40A, 3-pole molded case circuit breaker engineered to deliver dependable overcurrent protection in panelboards, switchboards, and control panels. The 3-pole configuration makes it a natural fit for three-phase systems, helping simplify wiring and improve fault isolation in motor control centers and distribution panels.

Key specifications

• Current rating: 40 A
• Poles: 3-Pole
• Breaker type: Molded Case Circuit Breaker
• Suitable for panelboards, switchboards, and control panels in industrial, commercial, and OEM settings

What sets the FA34040 apart

• Three-phase protection with a robust molded case design, delivering reliable insulation and safe operation in demanding environments
• Specifically rated for 40A circuits, making it an optimal choice for protecting feeders, motors, and other load centers in distribution panels
• Versatile for seamless integration into panelboards, switchboards, and control panels across a variety of installations
• Built to support dependable overcurrent protection in industrial, commercial, and OEM applications where downtime and safety are top concerns

Ideal applications

• Distribution panels and motor control centers (MCCs)
• Panelboards and switchboards in manufacturing, processing, and facility environments
• OEM equipment builds requiring a trusted, three-phase protection solution
• Systems where compact, reliable overcurrent protection must coexist with safe, easy maintenance

Practical benefits and outcomes

• Effective overcurrent protection helps prevent motor and equipment damage, reducing downtime and repair costs
• Three-pole protection simplifies wiring schemes and enhances fault isolation in three-phase systems
• Reliable operation in control panels and distribution equipment, supporting safer and more predictable electrical performance
• Clear, straightforward replacement path in maintenance scenarios, contributing to faster service and uptime

Installation and usage tips

Ensure the panel or enclosure is rated for the FA34040 and that wiring and terminal torque follow the manufacturer's specifications. Use in environments that align with the breaker's three-phase protection requirements, and maintain proper ventilation to sustain safe operation in continuous duty installations.