The Littelfuse LS7R 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. It is a 1500 V dc disconnect for ungrounded 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 -20 to 50 °C (-4 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 21.15 watts Maximum Busbar Connection Range 2 bars x 4 mm (.16”) H x 32 mm (1.25”) L Number of Circuits/Switches 1 Tightening Torque 159 lbf-in (18 N•m) for M10 screw g Torque 159 lbf-in (18 N•m) Material Plastic housingSilver-plated copper terminals Base Mounting Screws Configuration Type 2P Single Unit Weight 3 kg 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
