Overview Product Specifications - GFM100FA - Square D Part And Accessory Part Number: GFM100FA Manufacturer: Schneider Electric / Square D Family: Micrologic Category: Starters Type: GFM Standards Product Description - GFM100FA - Square D Part And Accessory This Square D Micrologic type GFM ground fault module is a part and accessory designed for use with various Square D circuit breakers. It is suitable for use with FAL, FHL, FCL, FA, FH, and FC circuit breakers with a ground fault shunt trip factory installed. The module is UL listed and compatible with both I-line or unit mount connections. It provides ground fault protection for current ratings ranging from 20A to 100A and is suitable for use in thermal magnetic molded case circuit breakers and LA I-line style switchboards.