Square D FAL34040G - 40 A, 480 V, 3-Pole Circuit Breaker | AmpState

The Square D FAL34040G is a 40A, 480V, 3-pole molded case circuit breaker engineered to protect branch circuits in panelboards and load centers. Its compact molded-case design helps you maximize panel space, while a thermal-magnetic trip unit delivers stable, repeatable protection across a wide range of operating conditions. Built for reliability, this MCCB is a practical choice for installations where compact size and dependable performance matter.

• Space-efficient design: A compact molded case format frees up valuable panel space, making it easier to fit this breaker into tight electrical enclosures.
• Thermal-magnetic trip unit: Combines overload protection with instantaneous short-circuit protection, providing consistent response and reducing nuisance trips in dynamic load environments.
• 3-pole, 480V rating: Suited for 3-phase distribution systems common in commercial and light industrial settings, with a robust 40A continuous operating current.
• OEM compatibility: Designed to be compatible with matching Square D loadcenters and panelboards, ensuring proper fit, alignment, and electrical performance.
• Versatile applications: Ideal for residential, commercial, and light industrial circuits that require reliable branch circuit protection at higher voltages.

Ideal use cases

• New panel installations in commercial spaces with 3-phase networks requiring 480V protection
• Replacement in existing Square D panelboards and load centers where a 40A, 3-pole MCCB is specified
• HVAC equipment, lighting and power distribution racks, or small industrial control circuits that demand solid short-circuit protection

Technical specifications at a glance

• Manufacturer: Square D
• Part number: FAL34040G
• Type: Thermal-magnetic molded case circuit breaker (MCCB)
• Amperage rating: 40A
• Voltage rating: 480V
• Number of poles: 3
• Application: Branch circuit overcurrent and short-circuit protection

Why this matters for your electrical system

Choosing the right breaker isn't just about amps and volts—it’s about predictable protection that minimizes downtime and equipment damage. The FAL34040G’s thermal-magnetic action provides dependable tripping behavior under overloads and acute short-circuit events, helping prevent wiring damage and electrical fires. The 3-pole configuration supports balanced 3-phase systems, while the 480V rating accommodates higher-voltage layouts often found in commercial and light industrial environments.

Installation considerations

For optimal performance, pair the FAL34040G with compatible Square D panelboards and load centers designed for molded case breakers. Verify target enclosure specifications and torque requirements per manufacturer guidelines, and ensure the installation matches the system’s 3-phase, 480V configuration. If you’re replacing an existing MCCB, confirm the replacement’s trip characteristics align with the system’s protection goals to maintain consistent protection timing and reliability.