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 MPDB67623 Description Open-Style PDB UL 1953 1000V 250A Tin-plated Aluminum - 310A 3-Pole 1 - 15 openings; 350-#6 --- #10-#14 Box to Box EAN/UPC Code 782001452285 Rated voltage AC UL 1000 V Rated voltage DC UL 1000 V Frequency (Hz) 50/60 Hz Ampere Rating (AL) 250 A Ampere Rating (CU) 310 A ROHS Compliant Yes AC or DC AC/DC Short Circuit Rating (Class CC) 100 kA with 30A Fuse Short Circuit Rating (Standalone) 10 kA Short Circuit Rating (Class T) 100 kA with 400A Fuse Number of Poles 3-Pole Connector Material Tin-plated Aluminum Torque Rating (Primary) 350-#6 275 Torque Rating (Secondary) #10-#14 15 Wire Range (Primary) 350-#6 Wire Range (Secondary) #10-#14