Square D FHL36100 100A 3P 600V Circuit Breaker | AmpState

The Square D FHL36100 is a 100 A, 3-pole, 600 V circuit breaker engineered to provide dependable overcurrent protection in panelboards, load centers, and broader electrical distribution systems. Built for reliable performance in demanding environments, it’s a trusted choice for safeguarding three-phase circuits and multi-wire configurations.

Ideal for retrofit projects and maintenance planning, the FHL36100 is designed to keep your installations consistent when part numbers must stay the same. This makes stocking, ordering, and on-site replacements simpler, reducing downtime and ensuring compatibility with existing Square D infrastructure.

Key specifications and practical details

• Manufacturer: Square D
• Part Number: FHL36100
• Product Type: Circuit Breaker
• Amperage: 100 A
• Poles: 3
• Voltage: 600 V
• Applications: Panelboards, load centers, and electrical distribution systems
• Best use case: Retrofit work and maintenance where consistent part numbers are essential
• Availability: Available from AmpState

Why this 3P 600V breaker stands out

For three-phase electrical distributions up to 600 V, the Square D FHL36100 provides precise overcurrent protection with a configuration that aligns with common Square D panelboards and load centers. The 100 A rating is well-suited for main or feeder protection in commercial and light industrial applications, helping to cap fault currents and protect wiring and devices downstream.

Use cases and practical scenarios

• Upgrading legacy electrical systems where a matching part number is required to maintain warranty, documentation, and stocking consistency.
• Coordinating spare parts for maintenance crews who service Square D panelboards and distribution equipment.
• Installing or retrofitting three-phase distributions in commercial spaces, data rooms, and light industrial environments that operate at up to 600 V.
• Planning preventive maintenance with a reliable, standardized component that minimizes compatibility concerns across multiple panels.

If you’re unsure about compatibility or fit, AmpState offers assistance to confirm the right part for your specific setup. Reach out with your panel model and current configuration, and we’ll help ensure a seamless match for the Square D FHL36100.