Square D FA36090 90A 3P Circuit Breaker | AmpState

The Square D FA36090 90A 3P Circuit Breaker is a purpose-built protection device designed for reliable fault interruption in panelboards, load centers, and electrical distribution systems. With a 3-pole configuration and a 90-amp rating, this breaker is engineered to handle three-phase circuits commonly found in commercial and multi-load environments, delivering steady performance where uptime matters.

Designed for professionals who value precision, the FA36090 is a direct part-number match for a wide range of Square D installations. It’s an ideal addition to maintenance inventories, panel builders’ repertoires, and service fleets where exact compatibility matters as much as dependable protection. AmpState offers this part in new, ready-to-install condition, helping you minimize downtime and streamline project planning.

Key specifications and advantages

• Amperage: 90 A
• Poles: 3 (three-pole configuration for three-phase protection)
• Part Number: FA36090
• Manufacturer: Square D
• Typical use: circuit protection in panelboards, load centers, and electrical distribution networks

Ideal use cases

• Replacement for a failed 3P 90A circuit breaker in commercial or industrial panels
• Direct-part-number spare inventory for panel builders and service fleets
• Installations that require a precise Square D FA36090 specification to maintain system redundancy

Why this matters for your project

Exact part-number compatibility ensures quick, confident replacements without field modifications or adapters. A correctly matched 3-pole 90A breaker keeps three-phase systems balanced, preserving downstream equipment protection and minimizing the risk of nuisance trips during peak demand. For maintenance teams and panel manufacturers, having the FA36090 in stock means faster service calls and cleaner downtime planning.

Compatibility and support

Direct part-number matching is the cornerstone of dependable electrical repairs. If you’re unsure about fit or panel compatibility, AmpState offers guidance to confirm whether FA36090 is the right choice for your exact panel model and distribution setup. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.

Purchase with confidence

Available from AmpState, the Square D FA36090 90A 3P Circuit Breaker is stocked for quick fulfillment, so you can keep your projects on schedule and your systems protected. Add this precise, reliable breaker to your order and protect your three-phase distribution with a trusted Square D solution.