Schneider Electric GFM150HD Ground Fault Module

Schneider Electric’s GFM150HD Ground Fault Module is an add-on ground-fault protection for PowerPact H-frame Micrologic trip systems, designed to fit 15 to 150 A breakers and provide precise ground-fault sensing and relay functionality. This UL Listed/CSA Certified accessory features an integral push-to-test capability that meets NEC testing requirements, and a ground-fault trip indicator with a pop-up status button for local visibility; operation requires a 12 Vdc shunt trip in the circuit breaker and 120 Vac control power for the integral test. The GFM150HD includes hardware for I-Line or unit-mount installation, and it connects at the OFF end of the breaker via bus-bar terminals; it can be paired with optional Neutral Current Transformer for 3-phase 4-wire loads. Standard zone-selective interlocking with upstream Micrologic trip systems is supported, and typical applications include automotive, healthcare facilities, semiconductor machinery, and general industrial environments.