Square D | FI360201021 | Circuit Breaker | 20A | 3-Pole | 600V

Meet the Square D FI360201021 Circuit Breaker, a purpose-built 3-pole protection device engineered to safeguard three-phase electrical systems. With a 20A rating and a 600V maximum, this breaker is the reliable choice for maintenance, retrofit, and replacement projects in compatible Square D panels.

• Part Number: FI360201021 — the definitive reference for compatibility and ordering
• Amperage: 20A
• Poles: 3-Pole for full three-phase protection
• Voltage Rating: 600V
• 用途: Ideal for panel upgrades, service replacements, and retrofits in industrial or commercial electrical systems
• Important Note: Confirm fit and ratings before ordering; the part number is the best reference for compatibility

Why this FI360201021 breaker stands out

Designed by Square D, this 3-pole unit provides synchronized trip across all phases, helping maintain system balance and enhance fault protection in three-phase configurations. The 20A rating is well-suited for circuits that demand steady current control without nuisance tripping, while the 600V rating accommodates higher voltage distribution environments typical in manufacturing floors and large facilities.

Practical use cases

• Replacing a failed or outdated three-pole breaker in a commercial or industrial panel
• Upgrading from a lower-ampacity or single-pole device to support three-phase circuits
• Retrofit projects where matching Square D specifications and part numbers ensure reliable compatibility

How to ensure a perfect fit

• Verify the panel’s compatible voltage class and three-pole configuration before ordering
• Use the exact part number FI360201021 as the primary compatibility reference
• Cross-check with your panel’s labeling and service documentation to confirm amperage, pole count, and voltage requirements