CHFN125GF

The CHFN125GF is a 1‑pole, 25 amp thermal‑magnetic circuit breaker with integrated ground‑fault protection, designed to deliver reliable overcurrent and ground‑fault sensing in commercial and industrial panelboards. The CHFN125GF combines standard branch‑circuit protection with ground‑fault detection, offering an added layer of safety for circuits susceptible to earth leakage conditions. Its 25 A rating and 120 VAC service make it well suited for branch circuits feeding lighting, receptacles, or control panels where personnel protection and equipment safety are both required.

Electrically, the CHFN125GF uses a thermal‑magnetic trip mechanism to provide reliable overload and short‑circuit protection, pairing a heat‑sensitive element with an instantaneous magnetic response to rapidly interrupt dangerous fault currents. The integrated ground‑fault sensing feature detects leakage current to ground that exceeds a fixed threshold (typically 30 mA to 50 mA for personnel protection or higher values for equipment protection depending on model variation) and trips the breaker when such leakage is present. This makes the device useful in wet locations, near electrical equipment with possible insulation breakdown, and other environments where unintended ground current presents a risk to personnel or could damage equipment.

Mechanically, the CHFN125GF features a compact, molded‑case housing with a manual toggle actuator providing clear ON/OFF status and reset capability after trip events. It is designed for plug‑in mounting into compatible Eaton panelboard bus systems without additional hardware, simplifying installation and replacement in existing panels. The breaker accepts standard conductor sizes appropriate for its amp rating and integrates with Eaton’s accessory ecosystem, including handle ties and labeling kits. With Eaton’s continued support and global distribution, the CHFN125GF remains a practical, code‑compliant choice for applications demanding both overcurrent and ground‑fault protection in a single device.

Purchase the CHFN125GF at Electrical.com, your reliable partner for industrial and commercial electrical products including circuit breakers panel boards, load centers and accessories. Our selection includes manufacturers like Eaton, Cutler Hammer and Westinghouse, backed by a dedicated sales team ready to assist with technical questions, product selection, and support.