The Next Generation Power Distribution Block (PDB). Mersen power distribution blocks provide a safe and easy method of splicing cables, splitting primary power into secondary circuits and fulfilling requirements for fixed junction tap-off points. All blocks are UL and CSA approved while meeting spacing requirements for feeder and branch circuits in conjunction with UL508A and the National Electrical Code®. PDB options include single or dual conductor primary inputs and up to 30 secondary outputs. Specialty blocks are available allowing for up to 7 primary inputs. The MPDB series is offered in three size categories: miniature (MPDB62 and MPDB63 series), intermediate (MPDB66 and MPDB67 series), and large (MPDB68 and MPDB69 series), in both aluminum and copper. Technical Specifications Item number MPDB69353 Description Open-Style PDB UL 1953 1000V 620A Tin-plated Aluminum - 760A 3-Pole 2 - 8 openings; 500-#4 --- 2/0-#14 Box to Box EAN/UPC Code 782001455668 Rated voltage AC UL 1000 V Rated voltage DC UL 1000 V Frequency (Hz) 50/60 Hz Ampere Rating (AL) 620 A Ampere Rating (CU) 760 A ROHS Compliant Yes AC or DC AC/DC Short Circuit Rating (Standalone) 10 kA Short Circuit Rating (Class T) Not Tested Number of Poles 3-Pole Connector Material Tin-plated Aluminum Number of Openings per Pole (Primary) 2 Number of Openings per Pole (Secondary) 8 Hex/Screw Size & Type (Primary) 13/16-16 x 1.06 Hex/Screw Size & Type (Secondary) 7/16-20 x .55 Hole Diameter (Primary) 0.88 in Hole Diameter (Secondary) 0.44 in Torque Rating (Primary) 500-#4 500 Torque Rating (Secondary) 2/0-#6 120; #8-#14 50 Wire Range (Primary) 500-#4 Wire Range (Secondary) 2/0-#14 Installation Mounting Direct Screw Mount