Square D FA36090 - 90 A, 600 V, 3-Pole Plug-In Circuit Breaker | AmpState

The Square D FA36090 is a rugged 90A, 600V, 3-pole plug-in molded case circuit breaker designed to deliver reliable branch circuit protection in panelboards and load centers. Built for quick service and enduring protection, it’s an ideal choice when uptime and safety matter in both new installations and panel upgrades.

• Fast plug-in connection: streamlined installation and effortless replacement, reducing labor time on site.
• Thermal-magnetic trip unit: delivers stable, repeatable protection by combining thermal overload sensing with instantaneous magnetic tripping for short-circuit events.
• OEM-compatible design: engineered to pair with matching Square D OEM loadcenters and panelboards for a clean, reliable fit and predictable performance.
• Versatile applications: suitable for residential, commercial, and light industrial environments where dependable overcurrent and short-circuit protection is essential.
• Three-pole configuration: provides balanced protection in three-phase systems with a common trip behavior for enhanced safety and coordination.

Key specifications you can rely on

• Manufacturer: Square D
• Part Number: FA36090
• Amperage: 90A
• Voltage: 600V
• Poles: 3
• Mounting Style: Plug-in
• Type: Thermal-magnetic molded case circuit breaker
• Application: Branch circuit overcurrent and short-circuit protection

Ideal when you need dependable protection that installs quickly into compatible panelboards, the FA36090 minimizes downtime and simplifies maintenance. Whether you’re upgrading an aging panel, equipping a new commercial space, or outfitting a light industrial installation, this plug-in breaker delivers consistent performance under demanding electrical loads. For installers and facility managers, it’s a practical, future-proof choice that aligns with Square D’s engineering standards and your safety requirements.