Mersen FSPDB3A Power Distribution Block Brand: Mersen. Part Number: FSPDB3A. Mersen Power Distribution Block, Finger Safe, 600 VAC, 310 A, 1 Pole, 1 Primary Connections/Pole, 8 Secondary Connection/Pole, 14 to 2/0 AWG, 6 AWG to 350 kcmil, 14 to 8 AWG Wire, 100 kA Short Circuit Current Rating, Tin Plated, Gray, 3.97 in H x 1.85 in W x 2.53 in D. Additional Description: MERS-FSPDB3A FINGER SAFE AL PDB (1)350 KCMI 310A Tin-plated Aluminum 1-Pole 2 - 8. Catalog Description: FSPDB Series UL 1059 Finger-Safe Power Distribution Block 1500V 310A - 310A Tin-plated Aluminum 1-Pole 2 - 8 openings; 350 mcm 2/0 - #14 --- #2 - #14..