Eaton LT3500FA - 500 A, 600 V, 3-Pole Bolt-On Circuit Breaker | AmpState

The Eaton LT3500FA is a 3-pole, 500A molded case circuit breaker engineered to protect panelboards and load centers from overcurrent and short-circuit events. With a 600V rating, it’s built to handle the demanding wiring environments found in residential subpanels, commercial spaces, and light industrial applications, delivering dependable protection when it matters most.

Why the LT3500FA stands out

• Secure bolt-on mounting creates a rigid, vibration-resistant bus connection, helping maintain reliable electrical continuity in panels subjected to movement or equipment vibrations.
• Thermal-magnetic trip unit provides stable, repeatable protection performance, accurately distinguishing between overload and short-circuit conditions for decisive and predictable responses.
• OEM-compatible design ensures seamless compatibility with matching Eaton and OEM load centers and panelboards, simplifying installation and maintenance.
• High-current capability at 500A makes it an ideal main feeder or branch-circuit protector in larger installations, reducing the need for multiple smaller devices.

Ideal applications and use cases

Choose the LT3500FA when you need robust protection for sizeable feeder circuits in:

• Residential subpanels with demanding load profiles
• Commercial electrical rooms serving multiple suites or tenants
• Light industrial panels where reliable protection and consistent trip behavior matter

The bolt-on design is particularly advantageous in retrofit projects or installations where a secure, vibration-resistant connection enhances long-term reliability.

Technical snapshot

• Manufacturer: Eaton
• Part number: LT3500FA
• Type: Thermal-magnetic molded case circuit breaker
• Amperage rating: 500 A
• Voltage rating: 600 V
• Number of poles: 3
• Mounting style: Bolt-on
• Application: Branch circuit overcurrent and short-circuit protection

Practical guidance for installation and operation

• Ensure the panelboard or load center is designed to accept bolt-on, 3-pole molded case breakers and that the LT3500FA is the correct amperage for the protected circuit.
• Take advantage of the bolt-on mounting for a secure connection in panels exposed to vibration or movement, helping maintain reliable protection over time.
• Use the thermal-magnetic trip characteristics to prevent nuisance trips on temporary surge events while still delivering fast response to actual faults.
• Coordinate with matching OEM components to preserve protection curves and compatibility across the installation.