Square D FAL321001021 Circuit Breaker, 100A, 3-Pole, 240V

Built for rugged industrial electrical service, the Square D FAL321001021 is a 100 A, 3-pole circuit breaker designed to protect three-phase systems at 240 V. This reliability-focused device is ideal for maintenance, service upgrades, and replacement projects where precise current protection and coordinated shutoff are essential.

• Manufacturer: Square D
• Part Number: FAL321001021
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 240 V

Why a 3-pole 240V breaker matters in industrial setups

In three-phase systems common to manufacturing and processing facilities, a 3-pole breaker protects all conductors with a single device, enabling synchronized tripping that minimizes equipment damage and downtime. The 100 A rating provides robust protection for feeders, motors, and other high-demand loads while supporting efficient panel design and maintenance workflows.

Compatibility and installation considerations

To ensure a perfect fit, verify compatibility by matching the exact part number to your panel schedule and application requirements. Use the FAL321001021 part number as your reference point when reviewing catalog sheets or maintenance records. If you need assistance confirming compatibility, we’re ready to help ensure you select the right breaker for your specific installation.

Ideal use cases

• Industrial service upgrades where a precise 3-pole, 240 V, 100 A solution is required
• Replacement projects for three-phase feeders in commercial or manufacturing panels
• Motor control and distribution circuits in maintenance and repair operations

Need help matching a part number or confirming compatibility? Message us and we’ll help.