Overview
Square D QO HF-rated GFCI is designed for efficient installation along with a new High Frequency (HF) rating that reduces unwanted tripping. The HF rating is designed for modern appliances and equipment that use variable speed motors or power inverters. These convert AC current to DC current and change the electrical characteristics that can impact GFCI performance. The HF rating addresses these issues and provides the reliability and protection you trust from Square D. Installation is easy with plug-on neutral connections on the entire range from 15A to 60A for a clean and simple installation. The LED diagnostic feature streamlines troubleshooting, helping identify wiring issues from an actual trip event. This is a 2‑pole 40A QO plug‑in breaker rated at 120/240VAC. This has a 10kA interrupting rating and 6mA ground‑fault (Class A) protection with a plug‑on neutral connection.