Square D FH36090 - 90 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

Square D FH36090 is a 90A, 600V, 3-pole plug-in molded case circuit breaker designed to deliver dependable branch circuit overcurrent and short-circuit protection in panelboards and load centers. Its fast plug-in connection makes installation and future replacements quick and straightforward, minimizing downtime on critical electrical systems.

Key benefits

• Fast plug-in connection for quick installation and effortless replacements, reducing service time during upgrades or maintenance.
• Thermal-magnetic trip unit combines thermal overload protection with magnetic instantaneous trip, delivering stable, repeatable protection across changing load conditions and fault currents.
• 3-pole design supports Three-phase systems and common-trip protection for multi-wire circuits, enhancing safety in commercial and light industrial environments.
• OEM panel compatibility engineered to snap into matching Square D load centers and panelboards, ensuring a seamless, reliable fit.
• Versatile application ideal for residential, commercial, and light industrial installations requiring robust branch-circuit protection up to 600V.

Why choose the FH36090

When upgrading or maintaining electrical panels, choosing a breaker that aligns with your panel’s design and protection needs is essential. The FH36090 is built to integrate cleanly with compatible OEM panels, delivering a trustworthy protection strategy for circuits that demand both reliable overload sensing and rapid fault interruption. Its molded-case construction offers durable performance in environments where vibration, heat, and regular switching are factors—helping extend panel life and reduce nuisance trips.

Technical specifications

• Manufacturer: Square D
• Part number: FH36090
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 90 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Plug-in
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Ideal for electricians, facilities managers, and contractors, the FH36090 provides a precise, compatible, and durable solution for panel upgrades, panelboard modernization, or new construction where reliable 3-pole protection at 600V is required. Choose FH36090 for a risk-managed, easy-to-service protection device that keeps electrical systems safe and compliant.