Square D | FI361001021 | Circuit Breaker | 100A | 3-Pole | 600V | Plug-In

Upgrade or replace with precision using the Square D FI361001021 Circuit Breaker. This 100 A, 3-Pole, 600 V plug-in device is designed for quick, reliable maintenance, retrofit, and replacement projects where exact specifications matter.

Key specifications

• Amperage: 100 A
• Poles: 3-Pole
• Voltage rating: 600 V
• Configuration: Plug-In
• Reference: Part number FI361001021

Why choose this for your panel

Designed for downtime-sensitive environments, this plug-in breaker drops into compatible Square D panels without rewiring, reducing service interruptions during maintenance and upgrades. Its three-pole design provides balanced protection for three-phase circuits, safeguarding motors, compressors, and controlled loads from overcurrent or short-circuit events. Built to withstand routine mission-critical use, it helps maintain reliable electrical protection across industrial and commercial applications.

Ideal use cases

• Retrofit older equipment with dependable 3-phase protection up to 100 A
• Replacement for worn or mismatched breakers in commercial/industrial panels
• Field upgrades for new 3-phase loads in 600 V systems

Compatibility & installation notes

Note: Confirm fit and ratings before ordering. The FI361001021 part number is the best reference for compatibility to ensure a seamless match with your panel family and bus configuration.

What problems it solves

• Protects 3-phase circuits from overload and short circuits, helping prevent equipment damage
• Minimizes downtime with a straightforward, plug-in replacement process
• Streamlines inventory and maintenance planning by using a precise, recognized reference part

Who this is ideal for

• Electrical maintenance technicians working on Square D panels
• Facilities engineers overseeing retrofit projects and panel upgrades
• Manufacturing and industrial sites needing reliable 3-phase protection for motors and drives

Choose the FI361001021 when your project requires a precise, drop-in 100 A, 3-Pole, 600 V plug-in circuit breaker that aligns with Square D panel standards and supports efficient, durable protection across demanding electrical systems.