Eaton Cutler-Hammer GFCB120 20A 1P 120V Circuit Breaker, GFCI, Plug-On | AmpState

Eaton Cutler-Hammer GFCB120 is a plug-on GFCI circuit breaker designed to protect circuits in panelboards, load centers, and electrical distribution systems. This 20A, 1-pole, 120V device is built for replacement projects and stocking spares to keep your BOM aligned to the original part number.

• GFCI protection on a 120V circuit: detects ground faults and instantly interrupts power to reduce the risk of shock and protect connected devices.
• Plug-On design: quick, tool-free mounting onto the panel bus for reliable electrical contact and simplified installation.
• Precise specifications: 20 amps, 1 pole, 120 volts—suiting standard residential and light commercial circuits that require ground-fault protection.
• OEM compatibility & BOM alignment: Part Number GFCB120 ensures you’re stocking the exact replacement that matches the original equipment in your panel or distribution system.
• Ideal for panelboards and load centers: designed to fit Eaton Cutler-Hammer panelboards and compatible distribution gear for a seamless retrofit or upgrade.
• AmpState availability: currently available from AmpState to support quick procurement and uptime.

Who needs this? Electricians, facility managers, and service teams who maintain residential, commercial, or light industrial electrical systems where GFCI protection is required. Use cases include replacing a failed 20A GFCI on a 120V circuit, stocking spares for fast on-site swaps, or restoring original BOM integrity after panel upgrades.

Why this matters to you

Choosing the GFCB120 means choosing a solution that prioritizes compatibility, reliability, and real-world practicality. The plug-on design reduces field wiring mistakes and speeds up service calls, while the GFCI feature adds an essential layer of safety in kitchens, bathrooms, garages, and outdoor outlets where moisture or damp conditions increase shock risk.

Need help confirming fit? Message us and we’ll help you confirm compatibility. AmpState is your source for this OEM-grade GFCI breaker—ensuring you get the right part every time.