Square D FHP36100 100A 3P 600V Circuit Breaker | AmpState

Meet the Square D FHP36100, a rugged 100 A, 3-pole, 600 V circuit breaker designed to deliver reliable protection in panelboards, load centers, and overall electrical distribution. Built for everyday electrical work, it shines in retrofit projects and maintenance planning where keeping the exact part number simplifies stocking, ordering, and on-site replacements.

• Amperage: 100 A
• Poles: 3
• Voltage rating: 600 V
• Manufacturer / Part Number: Square D FHP36100
• Applications: panelboards, load centers, and electrical distribution systems

The 3-pole configuration provides balanced protection for three-phase circuits, while the 600 V rating supports higher voltage distributions common in commercial and industrial environments. This breaker is purpose-built to fit standard Square D enclosures, making it a straightforward, drop-in replacement when you need consistent part numbers for maintenance or retrofit work. In practical terms, that means faster part identification, fewer mismatches, and quicker downtime when a replacement is required.

Ideal use cases

Use the FHP36100 when you’re upgrading or maintaining three-phase feeders, upgrading to a 100 A service, or replacing aging breakers without changing the enclosure or wiring layout. It’s particularly valuable in facilities that prioritize inventory consistency and predictable service intervals, such as commercial buildings, manufacturing floors, or data centers where downtime is costly and rapid servicing matters.

Why this Square D breaker stands out

Distinct from generic substitutes, the FHP36100 is part of Square D’s trusted protection lineup, designed to integrate smoothly with existing Square D panels and accessories. Its three-pole design reduces the need for coordinating multiple single-pole devices, helping you keep wiring organized and ensuring cohesive fault protection across all phases.

Compatibility and support

AmpState offers this part number in stock, ready to ship. If you’re unsure about fit, you don’t have to guess—our team can help confirm compatibility. Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit.