Effective September 2017 Technical Data 10537 Supersedes August 2016 UL Listed power distribution blocks Catalog number example: PDB323-3 is a 3-pole PDB323 Where: • The prefix “PDB323” defines the block’s lineside characteristics (i.e., one conductor port per pole that accepts 350 kcmil - #6 Cu/ Al conductors) and the loadside characteristics (i.e., six (6) conductor ports per pole that each accepts #4 - #14 Cu or #4 - #12 Al conductors). • The suffix “3” in this example defines this as a three-pole block. • See the catalog number table for details on the available lineside/loadside characteristics. How to order: From the catalog number table, select the catalog number that defines the desired lineside/loadside Catalog symbol: port and conductor characteristics. Add to the catalog number the suffix that defines • PDB___(poles) the desired pole configuration. Note, you must select from the available number of poles for Description: each catalog number. These appear in the second column of the catalog number tables. ™ Eaton’s Bussmann series high Short-Circuit Current Rating (SCCR) power distribution blocks Specifications: provide up to 200 kA SCCR and help achieve ® compliance with National Electrical Code (NEC ) Ratings and OSHA requirements by resolving a common • SCCR “weak link” in industrial control panels. Volts: 600 V • Amps: 175 to 310 A Available in 1-, 2- and 3-pole panel mount versions with popular lineside and loadside port • SCCR: 200 kA (see table for circuit protection ® configurations, these blocks are UL Listed and details) provide the requisite spacing between uninsulated opposite polarities or ground by meeting the UL Flammability rating 1953 1” through air and 2” over surface spacings • UL 94 V0 required per UL 508A for feeder circuit applications and per NEC for field installations. Storage and operating temperature range To increase application flexibility, these blocks • -4°F to 248°F (-20°C to 120°C) feature dual-wire rated ports that accept copper or aluminum conductors while retaining a UL Listed Agency information status. • UL 1953 Listed, Guide QPQS, File E256146 Optional covers are available to enhance electrical ® safety. • CSA Certified, Class 6228-01, File 47235 † Conductors • Stranded 75°C copper and aluminum • Higher temperature rated conductors permitted with appropriate derating † As specified in the catalog number table. Technical Data 10537 UL Listed power distribution blocks Effective August 2016 Catalog numbers: Lineside Loadside Current Wire size Wires Wire size Wires Max Line/load port No. of rating (Str/ferrule unless per Torque Ports/ (Str/ferrule unless per Torque Ports/ SCCR Catalog configuration poles (A) noted)* port N•m (Lb-in) pole noted)* port N•m (Lb-in) pole (kA)** number 2/0 - #1 Cu/Al (Str) 1 2/0 - #1 Cu/Al (Str) 1 †† †† #2 - #3 Cu/Al 1 12.4 (110) #2 - #3 Cu/Al 1 12.4 (110) #4 - #8 Cu/Al 1 #4 - #8 Cu/Al 1 1, 3 175 #10 - #12 Al (Str) 1 1 #10 - #12 Al (Str) 1 1 200 PDB204-_ 4.0 (35) 4.0 (35) #10 - #14 Cu 1 #10 - #14 Cu 1 #4 - #8 Cu/Al 2 #4 - #8 Cu/Al 2 13.6 (120) 13.6 (120) #10 - #14 Cu 2 #10 - #14 Cu 2 2/0 - #1 Cu/Al (Str) 1 #4 - #6 Cu/Al (Str) 1 4.0 (35) #2 - #3 Cu/Al 1 #8 Cu 1 1, 3 175 13.6 (120) 1 2.8 (25) 4 200 PDB220-_ #4 - #8 Cu/Al 1-2 #8 Al (Str) 1-2 #10 - #14 Cu 1-2 #10 - #14 Cu 1-2 2.3 (20) 2/0 - #1 Cu/Al (Str) 1 #2 - #3 Cu/Al 1 1, 3 175 13.6 (120) 1 1/4-20 x 3/4” Stud — — 1 200 PDB280-_ #4 - #8 Cu/Al 1-2 #10 - #14 Cu 1-2 2/0 - #1 Cu/Al (Str) 1 #4 - #6 Cu/Al (Str) 1 4.0 (35) #2 - #3 Cu/Al 1 #8 Al (Str) 1-2 1, 2, 3 175 #4 - #8 Cu/Al 1-2 13.6 (120) 1 #8 Cu 1 2.8 (25) 6 200 PDB321-_ #10 - #12 Al (Str) 1 #10 - #12 Al (Str) 1 4.0 (35) #10 - #14 Cu 1-2 #10 - #14 Cu 1-2 2.3 (20) #4 - #6 Cu/Al (Str) 1 350kcmil - 2/0 Cu/Al (Str) 1 4.0 (35) #8 Al (Str) 1-2 1/0 Cu/Al (Str) 1-2 #8 Cu 1 2.8 (25) † 1, 3 310 31.1 (275) 1 6 200 PDB323-_ #10 - #12 Al (Str) 1 4.0 (35) #1 - #6 Cu/Al 1-2 #10 - #12 Cu 1 2.3 (20) #10 - #14 Cu 2 350kcmil - 2/0 Cu/Al (Str) 1 #4 - #6 Cu/Al (Str) 1 4.0 (35) #8 Al (Str) 1-2 1/0 Cu/Al (Str) 1-2 † 1, 3 310 31.1 (275) 1 #8 Cu 1 2.8 (25) 12 200 PDB370-_ #10 - #12 Al (Str) 1 4.0 (35) #1 - #6 Cu/Al 1-2 #10 - #14 Cu 1-2 2.3 (20) #2 - #3 Cu/Al (Str) 1 #4 - #8 Al (Str) 1 5.6 (50) 350kcmil - 2/0 Cu/Al (Str) 1 #6 - #8 Al (Str) 2 #4 Cu 1 5.1 (45) 6 #6 Cu 1-2 #8 Cu 1-2 4.5 (40) #10 - #12 Cu 1-2 † 1, 3 310 31.1 (275) 1 4.0 (35) 200 PDB371-_ 1/0 Cu/Al (Str) 1-2 #14 Cu 2 1/0 - #3 Cu/Al (Str) 1 5.6 (50) †† #4 - #6 Cu/Al 1 5.1 (45) †† #8 Cu/Al 1 4.5 (40) 3 †† #10 - #12 Cu 1 4.0 (35) #1 - #6 Cu/Al 1-2 #6 - #14 Cu 2 13.6 (120) #4 - #6 Al (Str) 2 * 75°C wire (higher temperature rated wire acceptable with appropriate derating). Using a ferrule on a stranded conductor requires a correctly sized UL Listed ferrule (customer supplied) applied according to the manufacturer’s specifications. Ferrule ratings apply to copper wire only. ** See pages 4 and 5 for the tested upstream overcurrent protective devices necessary for achieving these SCCRs. † Torque rating for dual wire and ferrule application is 30.5 N•m (270 Lb-in). †† Torque rating for ferrule application is 13.6 N•m (120 Lb-in). 2 Eaton.com/bussmannseries UL Listed power distribution blocks Technical Data 10537 Effective August 2016 • Features and benefits Dual wire applications are only viable when using two wires of the same size, stranding, and insulating and conductor material in • High SCCRs up to 200 kA, assist in achieving high SCCR for a the same port. control panel per NEC and UL 508A requirements. Ferrule terminal application • In compliance with UL 1953 minimum spacing requirements for • industrial control panel feeder and branch circuits. Bussmann series PDB power distribution blocks are rated for use with UL Listed ferrules (see catalog number table for details). • Optional covers available to reduce the risk of accidental contact • Ferrule applications allow for the use of a broader range of with energized components. conductor stranding and simulate a more efficient, solid wire connection with the PDB terminal port. Dual wire port application • Always use UL Listed ferrules in accordance with the • Rated for dual wire port application to increase the possible manufacturer’s specifications and instructions. number of lineside and loadside connections. E.g., PDB220 can accept two wires into the lineside port (#4 - #14 Cu, #4 - #8 Al) and two wires per port (eight connections per pole total) on the loadside lug (#8 - #14 Cu, #8 Al). Selecting SCCR power distribution blocks and terminal blocks Short-circuit current rated power distribution blocks Bussmann series power distribution blocks have three distinct (NEC 670.3(A)), and HVAC equipment (NEC 440.4(B)) is required by styles to match different application needs. There are the PDBFS_ the NEC. and PDB_ high short-circuit current rated power distribution blocks Power distribution and terminal blocks not marked with a component and the 16_ power terminal blocks. The differences are whether the SCCR are typically one of the weakest links in a control panel’s power distribution blocks are enclosed or not, and whether they are equipment SCCR and may limit the equipment SCCR to no more UL 1953 Listed power distribution blocks or UL 1059 Recognized than 10 kA. The PDBFS_ and PDB_ products have the increased power terminal blocks, which have different minimum spacing spacing required for use in feeder circuits of equipment listed to requirements. The table on this page will assist you in selecting UL 508A (UL 1059 terminal blocks must be evaluated for proper which block is right for your application. spacings). Also, for building wiring systems, the PDBFS_ and Why these are important PDB_ power distribution blocks can be used to meet the 2014 NEC requirements in section 376.56(B) for power distribution blocks in Per the NEC and OSHA, equipment cannot be installed in an wireways. electrical system at a location where the available fault (short-circuit) current is greater than the equipment’s SCCR. See the last page of this data sheet for SCCR tools and resources to help you further understand and solve your SCCR needs. Further, equipment SCCRs are required in the 2014 NEC and for UL 508A Listed control panels. Marking the equipment SCCR on control panels (NEC 409.110), industrial machinery electrical panels Selection table This table provides an overview of the three Bussmann series power distribution and terminal blocks mentioned above. For details on the PDBFS blocks, see data sheet number 10536. For the 16_ blocks, see data sheet numbers 10533 (UL Recognized power distribution blocks), 10534 (splicer blocks) and 10535 (stud blocks). Spacing ** Wireways Catalog 1” air, UL 508A panel UL 508A panel HVAC NEC 376.56(B) symbol UL status Enclosed High SCCR* 2” surface branch circuit feeder circuit UL 1995 (requires UL 1953) UL 1953 Listed power PDBFS_ Yes*** Yes Yes Yes Yes Yes Yes distribution blocks UL 1953 Listed power Yes, with † PDB_ No Yes Yes Yes Yes Yes distribution blocks optional cover UL 1059 Recognized † †† †† No Yes No Yes No Yes No 16_ terminal blocks * When protected by proper fuse class with maximum ampere rating specified or smaller. ** For details, see PDB and TB minimum spacing requirements for equipment table below. *** IP20 finger-safe under specific conditions, see data sheet no. 10536, page 5. † Optional covers are available. Not IP20, but provide a safety benefit. †† No, except: Yes, if single pole units installed with proper spacings. Power distribution and terminal block minimum spacing requirements for equipment Spacing between live parts of opposite polarity Spacing between live parts and grounded parts UL standard Through air @ 600 V Over surface @ 600 V or enclosure @ 600 V 508A feeder circuits 1” 2” 1” 508A branch circuits 3/8” 1/2” 1/2” 1995 HVAC 3/8” 1/2” 1/2” Note: Refer to specific UL standards for complete spacing details. Eaton.com/bussmannseries 3 Technical Data 10537 UL Listed power distribution blocks Effective September 2017 Upstream fusing for SCCR and minimum enclosure data This table contains the tested SCCR levels for each PDBFS power distribution block using the specified lineside and loadside conductors and Bussmann series Class J, RK1, RK5 and T fuses. Using these tested SCCR levels also requires the power distribution block be installed in an enclosure with the minimum size indicated for each catalog number. Conductors (AWG or kcmil) Fuse class and maximum amps* RK1 RK5 T Minimum G J LPN-RK (250 V) FRN-R (250 V) JJN (300 V) enclosure Catalog number Lineside Loadside SC (480 V) LPJ LPS-RK (600 V) FRS-R (600 V) JJS (600 V) SCCR size (in) 2/0 - #8 2/0 - #8 — 200 100 60 200 200 kA 16 x 16 x 6.75 PDB204-1, -3 #4 - #12 — 200 100 60 200 200 kA PDB220-1, -3 2/0 - #8 16 x 16 x 6.75 #4 - #14 60 175 100 30 175 100 kA 2/0 - #8 Stud — 200 100 60 200 200 kA 16 x 16 x 6.75 PDB280-1, -3 #4 - #12 — 400 200 100 400 200 kA PDB321-1, -2, -3 2/0 - #8 24 x 20 x 6.75 #4 - #14 60 175 100 30 175 100 kA #4 - #8 — 400 200 100 400 200 kA 350 - #4 24 x 20 x 6.75 PDB323-1, -3 #4 - #12 60 175 100 30 175 100 kA #4 - #8 — 400 200 100 400 200 kA 350 - #4 24 x 20 x 6.75 PDB370-1, -3 #4 - #14 60 175 100 30 175 100 kA 1/0 - #6 — 400 200 100 400 200 kA PDB371-1, -3 350 - #4 24 x 20 x 6.75 1/0 - #12 60 175 100 30 175 100 kA Ampacities 75°C per NEC Table 310.16 and UL 508A Table 28.1. * Class CC 30 A (LP-CC-30, FNQ-R-30, KTK-R-30) or less are suitable for all SCCRs in this table. 4 Eaton.com/bussmannseries UL Listed power distribution blocks Technical Data 10537 Effective September 2017 Upstream circuit breakers for SCCR and minimum enclosure data This table contains the tested SCCR levels for each PDB power distribution block using the specified lineside and loadside conductors and Eaton circuit breakers. Using these tested SCCR levels also requires the power distribution block be installed in an enclosure with the mini- mum size indicated for each catalog number. PDB_ SCCR as rated with Eaton circuit breakers Suitable copper conductors Minimum kcmil/AWG Overcurrent protection circuit breaker required SCCR, RMS enclosure size Catalog no. Lineside Loadside Sym, kA Volts max Type Max amp (in.) 2/0 - #8 #4 - #10 65 480 EGC125, E125C, EGH125, E125H 125 EGC125, E125C, EGE125, E125E, EGS125, 2/0 - #8 #12 22 480 125 E125S, EGH125, E125H 16 x 16 x 6.75 PDB220 EGC125, E125C, EGB125, E125B, EGE125, 2/0 - #8 #14 14 480 125 E125E, EGS125, E125S, EGH125, E125H 2/0 - #8 #4 - #10 65 480 EGC125, E125C, EGH125, E125H 125 EGC125, E125C, EGE125, E125E, EGS125, 2/0 - #8 #12 22 480 125 E125S, EGH125, E125H 24 x 20 x 6.75 PDB321 EGC125, E125C, EGB125, E125B, EGE125, 2/0 - #8 #14 14 480 125 E125E, EGS125, E125S, EGH125, E125H 350 - #4 #4 - #6 65 480 JGH250, J250H 250 350 - #4 #8 42 480 JGH250, J250H 250 JGH250, J250H, JGE250, J250E, JGS250, 350 - #4 #10 14 480 250 J250S, #4 - #6 65 PDB323 24 x 20 x 6.75 #8 42 JGC250, J250C, JGU250, J250U, JGX250, 350 - #4 #10 25 480 250 J250X #8 50 #10 25 350 - #4 #4 - #6 65 480 JGH250, J250H 250 350 - #4 #8 42 480 JGH250, J250H 250 JGH250, J250H, JGE250, J250E, JGS250, 350 - #4 #10 14 480 250 J250S, 24 x 20 x 6.75 PDB370 #4 - #6 65 JGC250, J250C, JGU250, J250U, JGX250, 350 - #4 #8 42 480 250 J250X #10 25 350 - #4 #4 - #6 50 480 JGH250, J250H 250 350 - #4 #8 42 480 JGH250, J250H 250 JGH250, J250H, JGE250, J250E, JGS250, 350 - #4 #10 14 480 250 J250S, PDB371 24 x 20 x 6.75 #4 - #6 65 JGC250, J250C, JGU250, J250U, JGX250, 350 - #4 #8 50 480 250 J250X #10 25 Eaton.com/bussmannseries 5 Technical Data 10537 UL Listed power distribution blocks Effective September 2017 Dimensions — in (mm) Width Length Height Catalog No. A B C D E F (Hole) PDB204-3, PDB220-3, PDB280-3 4.25 (108) 2.88 (73) 2.13 (54) 1.62 (41) 2.25 (57) 0.22 (6) PDB323-3, PDB370-3, PDB371-3 6.30 (160) 5.50 (140) 3.70 (94) 3.25 (83) 4.75 (121) 0.22 (6) PDB323-1, PDB370-1, PDB371-1 1.98 (50) 4.00 (102) 3.33 (84) — 3.37 (86) 0.21 (5.3) x 0.41 (10) PDB204-1, PDB220-1, PDB280-1 1.07 (27) 2.88 (73) 1.75 (44) — 2.25 (57) 0.20 (5) PDB321-1 1.98 (50) 4.00 (102) 3.33 (84) — 3.37 (86) 0.21 (5.3) x 0.41 (10) PDB321-2 3.60 (91) 4.00 (102) 3.33 (84) 1.62 (41) 3.37 (86) 0.21 (5.3) x 0.41 (10) PDB321-3 5.20 (132) 4.00 (102) 3.33 (84) 3.23 (82) 3.37 (86) 0.21 (5) x 0.41 (10) PDB204 PDB220 C C Lineside Loadside Lineside Loadside B E F F A A E B Loadside Loadside D A A D Lineside B Lineside B PDB280 C Lineside Loadside E F A B Loadside A D Lineside B 6 Eaton.com/bussmannseries  UL Listed power distribution blocks Technical Data 10537 Effective September 2017 PDB321 PDB323 Lineside Loadside C C B E Lineside Loadside F F Loadside A A B E Lineside A D F Loadside A D Loadside A D Lineside B Lineside E PDB370 PDB371 C C E Lineside Lineside Loadside Loadside E F F A A B B F F Loadside Loadside A D A D E Lineside Lineside B E B Eaton.com/bussmannseries 7     Technical Data 10537 UL Listed power distribution blocks Effective September 2017 Optional covers SCCR tools and resources Electrical safety can be enhanced by installing optional covers. Eaton offers many resources that help customers understand and From the table below, order the cover catalog number that matches assess their SCCR needs. the block catalog number. Order the quantity indicated in the “order Please use the following whenever you have questions, concerns or quantity” column. E.g., the 3-pole block PDB204-3 requires ordering just need help with SCCR ratings. three CPB162-1 covers (one cover for each pole). Engineering services for SCCR Block catalog no. Poles Cover catalog no. Order quantity OSCAR™ compliance software eliminates the guesswork in PDB204-1 1 CPB162-1 1 equipment SCCR calculations. PDB204-3 3 CPB162-1 3 This innovative OSCAR compliance software assists customer PDB220-1 1 CPB162-1 1 compliance with new Code and standards requirements for short- PDB220-3 3 CPB162-1 3 circuit current ratings as they relate to control panels, equipment and assemblies. Go to OSCAR.eaton.com and request a seven-day free PDB280-1 1 CPB162-1 1 trial. PDB280-3 3 CPB162-1 3 If your equipment SCCR needs improvement, contact the Bussmann PDB323-1 1 CPDB-1 1 Application Engineers for a free design review. Call toll-free PDB323-3 3 CPDB-1 3 1-855-BUSSMANN (855-287-7626) or email FuseTech@eaton.com. PDB370-1 1 CPDB-1 1 Online SCCR tools and publications PDB370-3 3 CPDB-1 3 • Free SCCR Protection Suite online tool. An easy, fast way to PDB371-1 1 CPDB-1 1 search for components and their SCCRs. Visit sccr.eaton.com. PDB371-3 3 CPDB-1 3 • Application notes: PDB321-1 1 CPDB-1* 1 • Developing an effective SCCR plan for facilities and purchasers PDB321-2 2 CPDB-2* 1 of industrial equipment — publication no. 10367 PDB321-3 3 CPDB-3* 1 • Developing an equipment SCCR standard for manufacturers of * For the PDB321-_ blocks, order one cover for each block (not per pole). industrial equipment — publication no. 10368 • Four steps to determine equipment SCCR — publication no. 10538 • Equipment SCCR made easy brochure — publication no. 10374 • SPD (Selecting Protective Devices) handbook; over 250 pages covering the application of overcurrent protective devices, SCCR and more — publication no. 3002 The only controlled copy of this data sheet is the electronic read-only version located on the Eaton network drive. All other copies of this document are by definition uncontrolled. This bulletin is intended to clearly present comprehensive product data and provide technical information that will help the end user with design applications. Eaton reserves the right, without notice, to change design or construction of any products and to discontinue or limit distribution of any products. Eaton also reserves the right to change or update, without notice, any technical information contained in this bulletin. Once a product has been selected, it should be tested by the user in all possible applications. Eaton 1000 Eaton Boulevard For Eaton’s Bussmann series Cleveland, OH 44122 Eaton.com product information, Eaton, Bussmann and OSCAR are valuable call 1-855-287-7626 or visit: Bussmann Division trademarks of Eaton in the U.S. and other 114 Old State Road countries. You are not permitted to use Eaton.com/bussmannseries Ellisville, MO 63021 the Eaton trademarks without prior written United States consent of Eaton. Eaton.com/bussmannseries CSA is a registered trademark of the Canadian © 2017 Eaton Standards Group. Follow us on social media to get the All Rights Reserved NEC is a registered trademark of the National latest product and support information. Printed in USA Fire Protection Association, Inc. Publication No. 10537 — BU-MC16049 UL is a registered trademark of the September 2017 Underwriters Laboratories, Inc. 8 Eaton.com/bussmannseries