Square D FHL36100 - 100 A, 600 V, 3-Pole Circuit Breaker | AmpState

Designed for reliable branch circuit protection in panelboards and load centers, the Square D FHL36100 is a 100 A, 600 V, 3-pole molded case circuit breaker. Built to perform in demanding residential, commercial, and light industrial environments, this device delivers dependable overcurrent and short-circuit protection with a compact footprint that helps maximize panel space.

• Compact molded case design optimizes panel space, making it easier to fit within crowded panels and simplify wiring layouts.
• Thermal-magnetic trip unit provides stable, repeatable protection: the thermal element handles normal overloads while the magnetic element delivers an instantaneous response to high fault currents, reducing damage and downtime.
• 3-pole configuration accommodates three-phase circuits up to 600 V, ideal for commercial and light industrial power distribution.
• OEM panel compatibility is designed to pair with matching Square D load centers and panelboards, ensuring proper fit, bus compatibility, and coordinated protection.
• Versatile applications suitable for residential subpanels, commercial distribution panels, and light industrial electrical systems requiring solid, predictable protection.

Technical specifications

• Manufacturer: Square D
• Part Number: FHL36100
• Type: Thermal-magnetic molded case circuit breaker
• Amperage Rating: 100 A
• Voltage Rating: 600 V
• Number of Poles: 3
• Application: Branch circuit overcurrent and short-circuit protection in panelboards and load centers

Use cases and practical guidance

In a commercial or light industrial setting, the FHL36100 serves as a reliable main feeder or subfeed breaker within Square D panel systems, safeguarding multi‑circuit distributions against overloads and fault events. For residential work, it supports larger subpanels or three‑phase installations where three-pole protection is required, delivering predictable trip behavior and ease of maintenance when paired with other Square D devices.

Why choose this specific breaker? It’s engineered to align with Square D OEM panels, ensuring proper fit, electrical coordination, and straightforward replacement without adapters. Its thermal-magnetic trip mechanism delivers consistent protection across varying ambient temperatures and load conditions, helping technicians avoid nuisance trips while still shutting down faults promptly.

Tips for optimal performance:

• Always verify compatibility with your panelboard or load center and ensure the device is intended for 600 V service within your installation.
• Follow the panel manufacturer’s installation guidelines and torque specifications for secure mounting and reliable bus connections.
• Use as part of a coordinated protection scheme within the Square D family to maintain consistent trip curves and system protection.