Square D | FH360201021 | Circuit Breaker | 20A | 3-Pole | 600V | Plug-In

Meet the Square D FH360201021 circuit breaker—a purpose-built, plug-in protection device designed for quick, reliable interruption of three-phase circuits in 600V systems. With a 20A rating across 3 poles, this unit delivers precise, coordinated overcurrent protection in demanding industrial and commercial environments.

Core specifications at a glance

• Amperage: 20A
• Poles: 3-Pole
• Voltage: 600V
• Mounting: Plug-In for fast, secure installation in compatible Square D panels

Why this model stands out The FH360201021 is designed for quick replacement during maintenance or retrofit projects, minimizing downtime without sacrificing protection. Its plug-in design means technicians can swap in a compatible unit with minimal wiring work, keeping systems online and teams productive.

Ideal use cases

• Maintenance and service: replace a failed breaker in existing Square D panel infrastructure with a single, straightforward plug-in operation
• Retrofit projects: standardize three-phase protection across different sections of a facility, ensuring consistent protection and trip characteristics
• New installations: deploy reliable 3-pole, 20A protection for 600V three-phase circuits in industrial or commercial settings

What makes it unique

• Exact part reference: The FH360201021 number is your best guide for compatibility, helping you avoid mismatches during procurement
• Coordinated 3-pole protection: Ensures synchronized shutting down of all three phases, reducing risk in multi‑phase systems
• Plug-in simplicity: Streamlines installation and future maintenance, cutting field wiring time and minimizing panel disruption

Practical guidance for use

• Always verify fit and ratings against your panel model before ordering to ensure seamless operation
• Keep a spare FH360201021 on hand for proactive maintenance, reducing unplanned downtime
• Follow standard electrical safety practices during replacement to prevent energization or arc-flash risks

Whether you’re conducting routine maintenance, upgrading an aging panel, or implementing a new three-phase 600V system, the Square D FH360201021 circuit breaker delivers dependable protection with a plug-in, time-saving installation approach. Use the exact part number as your compatibility compass and protect your equipment with precision where it matters most.