Eaton Cutler-Hammer FD3040 40A 3P 600V Circuit Breaker | AmpState

The Eaton Cutler-Hammer FD3040 is a rugged, 40-amp, 3-pole, 600-volt circuit breaker designed for everyday electrical protection in panelboards, load centers, and electrical distribution systems. When a precise part-number match matters, the FD3040 delivers reliable, direct-fit performance you can count on.

Built for professional use, it’s the smart choice for maintenance teams, panel builders, and spare inventories. AmpState stocks this genuine Eaton device, ensuring quick access when you need exact compatibility. If you’re unsure about compatibility, message us and we’ll verify the fit against your specific panel or distribution setup.

Key advantages

• Exact part-number match for streamlined procurement and reduced troubleshooting
• Genuine Eaton Cutler-Hammer FD3040 circuit breaker for dependable protection
• 40 A, 3-pole design provides coordinated protection across three phases
• 600 V maximum rating suitable for commercial and industrial electrical distribution
• Ideal for panelboards, load centers, and centralized distribution networks
• Availability from AmpState accelerates sourcing and stocking for maintenance programs
• Compact, standard-form factor facilitates straightforward installation into existing enclosures

Ideal use cases

• Replacement in service calls where exact FD3040 is specified
• Panel builds or retrofits requiring a precise Eaton FD3040 component
• Spare inventory for facilities teams to minimize downtime and stockouts
• Residential, commercial, or light-industrial distribution systems needing reliable protection

Technical specs

• Part Number: FD3040
• Manufacturer: Eaton Cutler-Hammer
• Amperage: 40 A
• Poles: 3
• Voltage: 600 V
• Applications: Panelboards, Load Centers, Electrical Distribution

Need help matching a part number or confirming compatibility? Message us and we’ll help you confirm fit against your equipment, ensuring you’re ordering the exact device your panel requires.

Safety note: always de-energize equipment and follow relevant electrical codes when installing or replacing a circuit breaker. This FD3040 is a dependable, long-lasting solution for maintaining robust circuit protection across your electrical distribution network.