Square D | A1L3100 | Circuit Breaker | 100A | 3-Pole | 240V

Square D A1L3100 is a reliable 100 Amp, 3-Pole, 240V circuit breaker designed for dependable protection in commercial and industrial electrical systems. Built for maintenance, retrofit, and replacement projects, this unit ensures you can restore or upgrade power distribution without compromising on safety or compatibility.

Why this breaker matters

• Exact specifications you can trust: Amperage 100A, 3-Pole configuration, 240V operation align with common three-phase distribution needs, helping protect motors, feeders, and panel circuits.
• Best reference for compatibility: The part number A1L3100 is the most reliable guide to fitment in Square D panels and related enclosures.
• Easy maintenance and retrofit: When a switchgear or panel is due for an upgrade or part replacement, this breaker slots in where a 100A, 3-pole, 240V device is specified, reducing downtime and search effort.

Key specifications at a glance

• Amperage: 100A
• Poles: 3-Pole
• Voltage: 240V
• Part number reference: A1L3100

Ideal use cases

• Retrofits in legacy Square D panels that require a 3-Pole, 240V protection device.
• Replacement for a failed or tripped 100A circuit breaker in multi-phase electrical systems.
• Maintenance scenarios where panel reconfiguration or upgrading feeders demands precise matching specifications.

Practical guidance for deployment

Before ordering, confirm fit and ratings against your panel’s labeling. Since part number accuracy is the strongest compatibility indicator, compare A1L3100 to the panel’s approved parts list. Ensure your installation aligns with all safety and electrical standards relevant to your project.

With the Square D A1L3100, you get a purpose-built, compatible solution for 100A, 3-Pole, 240V protection that supports efficient maintenance, thoughtful retrofitting, and reliable replacements in demanding electrical environments.