Magnum ME125F 125 Amp ANL Fuse Block Assembly Work with MM, MM-AE, MMS and MM-E Series Inverters Designed to provide code compliant overcurrent protection for DC systems up to 32-volts Protects the battery bank, inverter, and cables from damage caused by short circuits and overloads Conductor Gauge #4 AWG/21.149 mm, Current Capacity 125, Recommended Fuse 125