May 31, 2023 – Extra-heavy-duty industrial and hospital-grade ground fault receptacles from Hubbell Wiring Device-Kellems feature Autoguard self-test technology and closed loop active detection (CLAD), which employs a microcontroller to identify and isolate true ground fault conditions from transient events, harmonics, and other anomalous building noise.

Motor and LED lighting controls, and wireless communication systems can create electrical interference that may lead to false tripping, says Hubbell—even when nothing is plugged in. Autoguard CLAD technology eliminates possible inoperability, says the company.

The CLAD GFCIs feature a single rectangular LED indicator that displays the device’s ability to provide protection: green indicates power, red indicates a trip, or flashing red indicates end of life. Redesigned test and reset buttons provide a flush look and feel to the face of the receptacle.

Hubbell’s tamper-resistant (TR) mechanism limits improper access to energized contacts, yet allows for smooth plug engagement. The TR shutters are White for visual confirmation the device is functioning properly.

Extra heavy-duty industrial ground fault receptacles feature a corrosion-resistant design; internal and exposed parts are nickel-plated, and a selective conformal coating is applied to critical components.