EATON BUSSMANN PDB321-2

Power Distribution Block Increase Assembly Short-Circuit Current Ratings New Cooper Bussmann Power Distribution Blocks With High SCCRs ® • NEW 2005 NEC And UL508A SCCR Marking Requirements The following equipment must be marked with an assembly SCCR: • Industrial Control Panels [409.110] • Industrial Machinery Electrical Panels [670.3(A)] • Certain HVAC Equipment [440.4(B)] • Meter Disconnect Switches [230.82(3)] • Certain Motor Controllers [430.8] This SCCR is based on the lowest-rated component, or weakest link, in the assembly. Unmarked power distribution blocks will default to a rating of 10kA. • High Component SCCRs – Up To 200kA PDBs are often an assembly’s lowest-rated component, or “weak link,” and may limit the assembly SCCR to only 10kA. Eliminate this weak link with these new, higher-rated PDBs. • Agency Listed These new higher-rated PDBs are listed to UL1953 and can be used in UL508A panels for both feeder and branch circuit applications. • Expand Installation Flexibility Equipment with low SCCRs are limited to locations where only low-level short-circuit current is available. By replacing a low-rated PDB with a new Cooper Bussmann high SCCR PDB, an assembly can achieve a higher SCCR for more installation flexibility. ® • NEW 2005 NEC Requirements For Wireways These new listed power distribution blocks can be ® used to meet the new 2005 NEC requirement in section 376.56(B) for wireways. Dimensions — in (mm) Cooper Bussmann UL A A D D Top Listed PDBs With High E B SCCRs E B F Get The High Assembly SCCR You Desire Listed to UL1953, with high SCCRs up to 200kA, these C PDBs can replace a low-rated PDB to achieve a higher Side F assembly SCCR. PDB204-3, PDB220-3, PDB280-3 3-pole A Top 2-pole A Top A 1-pole A Side C Side B E C B C PDB323-3, PDB370-3, PDB371-3 E F D PDB321-1, PDB321-2, PDB321-3 F PDB323-1, PDB370-1, PDB371-1 Catalog Numbers A B C D E F (Hole) A F PDB204-3, PDB220-3, PDB280-3 4.27 (108.3) 2.88 (73.2) 2.13 (54.0) 1.62 (41.1) 2.25 (57.2) 0.22 (5.7) PDB323-3, PDB370-3, PDB371-3 6.00 (152.4) 5.50 (139.7) 3.70 (93.9) 3.25 (82.6) 4.75 (120.7) 0.22 (5.7) PDB323-1, PDB370-1, PDB371-1 1.96 (49.8) 3.38 (85.7) 3.32 (85.7) — 0.21 (2.5) X 0.41 (10.4) E B PDB204-1, PDB220-1, PDB280-1 1.07 (27.2) 2.88 (73.2) 1.75 (44.5) 2.25 (57.2) 0.20 (5.1) C PDB321-1 1.96 (49.8) 4.00 (101.6) 3.32 (84.3) 1.62 (41.1) 3.37 (85.6) 0.21 (5.3) X 0.41 (10.4) PDB321-2 3.58 (90.9) 4.00 (101.6) 3.32 (84.3) 1.62 (41.1) 3.37 (85.6) 0.21 (5.3) X 0.41 (10.4) PDB204-1, PDB220-1, PDB280-1 PDB321-3 5.20 (132.1) 4.00 (101.6) 3.32 (84.3) 1.62 (41.1) 3.37 (85.6) 0.21 (5.3) X 0.41 (10.4) Catalog SCCR Numbers Wire Range (Load-Side Terminals (- # of Poles) Line Load Wire Range) Maximum Fuse Size Amps Line / Load PDB204-1, -3 2/0 – #8 Cu 2/0 – #8 Cu 200kA 200A Class CC, G, J, T 175A 200kA (#4 - #12) 200A Class CC, G, J, T PDB220-1, 3 2/0 – #8 Cu (4) #4 – #14 Cu 175A 100kA (#4 - #14) 175A Class CC, G, J, T PDB280-1, -3 2/0 – #8 Cu 1⁄4 - 20 x 3⁄4 stud 200kA 200A Class CC, G, J, T 175A 200kA (#4 - #12) 400A Class CC, G, J, T PDB321-1, -2, -3 2/0 – #8 Cu (6) #4 – #14 Cu 175A 100kA (#4 - #14) 175A Class CC, G, J, T 200kA (#4 - #8) 400A Class CC, G, J, T PDB323-1, -3 350kcmil – #4 Cu (6) #4 – #12 Cu 310A 100kA (#4 - #12) 175A Class CC, G, J, T 200kA (#4 - #8) 400A Class CC, G, J, T PDB370-1, -3 350kcmil – #4 Cu (12) #4 –#14 Cu 310A 100kA (#4 - #14) 175A Class CC, G, J, T (6) #2 – #12 Cu; 200kA (1/0 - #6) 400A Class CC, G, J, T PDB371-1, -3 350kcmil – #4 Cu 310A (3) 1/0- #12 Cu 100kA (#4 - #12) 175A Class CC, G, J, T ©2006 Cooper Bussmann • St. Louis, MO 63178 636-394-2877 • www.cooperbussmann.com Printed in USA Reorder # 3134 4-06-7.5M