The Littelfuse LS6R dc series is an energy-efficient, compact disconnect switch that quickly breaks or resumes the flow of current safely to prevent shock hazards when trying to isolate circuits or repair systems. Pre-order 6-8 Weeks UL 98B Standards Total Voltage Rating 1500 V dc Amperage Rating 400 A SCCR Rating 10 kA Ambient Temperature -30 to 50 °C (-22 to 122 °F) IEC 60947-3 Standards Insulation Voltage Rating Uimp 1500 V dc Impulse Withstand Voltage Rating Uimp 12 kV Operational Current DC21B Rating 400 A/1500 V dc Other Characteristics Power Losses at 250 A 10.58 watts Maximum Busbar Connection Range 2 bars x 4 mm (.16”) H x 32 mm (1.26”) L Number of Circuits/Switches 1 Mechanical Operations 8,000 Tightening Torque 212 lbf-in (24 N•m) Material Plastic housingSilver-plated copper terminals Base Mounting Screws Flammability Rating UL 94 V-0 Approvals UL 98B & UL 94UL Guide WHVAUL Listed E511898NEC Article 690 for PV systemsIEC-60947-3CEEAC Environmental RoHS compliantREACH