Square D FAL321001121 100A 3-Pole 240 V Circuit Breaker

Introducing the Square D FAL321001121 100A 3-Pole 240 V Circuit Breaker — a dependable, three-phase protection solution engineered for demanding electrical systems. Designed to fit compatible Square D panels, this unit delivers reliable overcurrent protection across all three conductors, helping keep equipment and people safe in commercial, industrial, and high-demand environments.

Key specifications at a glance

• Current rating: 100 A
• Poles: 3
• Voltage rating: 240 V
• Part number: FAL321001121
• Brand: Square D

Why a 3-pole, 240 V design matters

In three-phase electrical distributions, a 3-pole circuit breaker protects all live conductors simultaneously. The FAL321001121’s integrated triple-pole design provides synchronized disconnection on fault conditions, reducing electrical stress on wiring and components and helping prevent cascading trips across phases. This makes it an ideal choice for protecting feeders and motors in 3-phase networks where reliable, coordinated shutdown is essential.

Ideal use cases

• Protection for 3-phase motors in pumps, conveyors, compressors, and CNC equipment
• Protection of distribution feeders in commercial and light industrial panels
• Replacement or refurbishment in existing Square D installations to maintain panel compatibility and electrical performance

What sets it apart

• Built to slot into compatible Square D panels with a robust, common-trip feel across all three poles for consistent protection
• Compact, integrated design that simplifies installation and reduces wiring complexity in multi-pole circuits
• Part of a trusted line known for durable performance in everyday electrical distribution tasks

Practical tips for a smooth setup

• Confirm panel compatibility with the FAL321001121 before replacement or installation
• Ensure the circuit conductor gauge and protection level align with the 100 A rating to avoid nuisance trips
• Always power down the service and follow electrical safety protocols or consult a licensed electrician for installation
• Use the part number FAL321001121 when ordering to ensure you receive the exact Square D unit intended for your panel

Whether you're upgrading an aging panel, repairing a distribution feed, or outfitting a new commercial installation, the Square D FAL321001121 delivers clear, dependable protection for 3-phase circuits at 240 V. Trust this 100 A, 3-pole breaker to maintain safe, reliable operation of your critical equipment while simplifying panel maintenance and replacements.