Square D PowerPact family is industry leading innovation and protection for heavy duty commercial and industrial appliacations The MicroLogic Ground-Fault Module (GFM) is a UL Listed/CSA Certified circuit breaker accessory which protects equipment from damage caused by ground faults. It is an add-on module which, when connected to a PowerPact H-frame thermal-magnetic circuit breaker only, provides ground-fault sensing and ground-fault relay functions. This ground fault module with pick-up adjustment range of 20A to 100A is used with companion PowerPact H-frame breakers with current rating of 15A to 150A. A 12 Vdc shunt trip module is required in the circuit breaker. This may be field installed or factory installed when the circuit breaker is ordered with an -SN suffix. At 250 A, the ELM250JD can be used with 80% rated circuit breakers only. All GFMs are supplied for I-Line™ mounting as standard, easily convertible to unit mount by removing the I-Line bracket. The product comes as UL 1053 . Ground-fault Sensing and Relaying Equipment. Meets NEC 230.95© QO load centers are designed for residential and industrial use to protect electrical systems, equipment and people. Prop 65: WARNING: This product can expose you to chemicals including: DINP, which is known to the State of California to cause cancer, and DIDP, which is known to the State of California to cause birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov - Compatible Products: HDL36100; S37445; HDL36015; S29392; HDL36150; HDL36060; HDL36125; HDL36030; HDL36020; HDL36050; HDL36040; HGL36100