Square D | 9422RN1 | Circuit Breaker | 100A | 3-Pole

The Square D 9422RN1 circuit breaker is a precise, three-pole, 100A protection device built for maintenance, retrofit, and replacement tasks in compatible Square D panels. When exact fit matters, this 9422RN1 unit delivers a reliable, straightforward solution that aligns with your panel’s design and electrical ratings.

Key specifications

• Amperage: 100A
• Poles: 3-Pole
• Part Number: 9422RN1
• Brand: Square D

Why this 9422RN1 stands out

Exact part number compatibility matters when reliability and safety are on the line. The 9422RN1 is designed to be the best reference for matching panels, reducing the guesswork during replacement. Its 3-pole configuration ensures simultaneous disconnection of all three hot legs in three-phase systems, delivering coordinated protection for your equipment and wiring. This unit is purpose-built for quick, straightforward retrofits or replacements, helping you minimize downtime and keep critical loads protected.

Ideal use cases

• Maintenance and routine servicing of Square D panels that require a precise 9422RN1 fit.
• Retrofits to upgrade or restore protection on three-phase circuits with a 100A rating.
• Replacement of worn or tripped breakers in commercial or industrial electrical setups where panel compatibility is defined by the 9422RN1 designation.

How it protects and fits your system

In three-phase distribution, this 3-Pole breaker interrupts all three conductors when the current exceeds 100A, helping prevent damage from overloads and short circuits. Its design mirrors Square D’s standards for fit and operation within compatible panels, ensuring consistent performance and predictable trip behavior when you need it most. By using the exact part number for compatibility, you avoid mismatches that can lead to improper seating, nuisance tripping, or unreliable protection.

Compatibility and installation notes

Before ordering, verify that your panel documentation calls for a 9422RN1 and a 100A, 3-Pole breaker. The part number is the most reliable reference for compatibility, so use it to confirm fit with your Square D panel model and bus connection. For installation, follow standard electrical safety practices: power down the service, verify absence of voltage, and install in accordance with your panel’s instructions. Keep the panel labeling and load requirements in mind to ensure proper protection for your circuits.

Specifications at a glance

• Amperage: 100A
• Poles: 3-Pole
• Part Number: 9422RN1
• Brand: Square D
• Use: Maintenance, Retrofit, Replacement in compatible panels