Power Distribution Blocks

ower istribution Blocks A OWERFUL WAY TO MANAGE YOUR OWER ISTRIBUTION CHALLENGES Your problem: You re facing the enormously complex wiring requirements of an automated manufacturing facility. Or the compatibility problems of a commercial complex retrofit. Or the need for seamless electrical service in a hospital annex that s anything but seamless. Where can you turn to solve your power distribution problems? Our solution: Well beyond circuit protection solutions. Mersen offers you an arsenal of circuit management products. One of which is our line of polycarbonate 600V / 90 to 50A ower istribution Blocks. Safe and convenient, durable and easy to install, they re the simple way to split primary power circuits into secondary circuits or provide fixed-junction tap-off points. Mersen s comprehensive line of Bs includes open style and enclosed blocks in a wide range of configurations. Copper and aluminum blocks are available in either style with a full complement of accessories. FSB Series Finger-Safe ower istribution Blocks... MB Series Open-Style ower istribution Blocks... 4 MB6-MB63 (Mini) Open-Style Bs.... 6 MB66-MB67 (Intermediate) Open-Style Bs.... 7 MB68-MB69 (Large) Open-Style Bs.... 9 MB ouble-wide Open-Style Bs.... imensions... Want more information fast? For more technical or applicationspecific information, please call our ower istribution Block experts at 978-465-4853 or visit our website at ep.mersen.com.

FSB Finger-Safe ower istribution Blocks OWER ISTRIBUTION SAFETY EVOLVING Mersen FSBs introduce a new level of safety and ease for installing power distribution blocks. An I0 level of finger-safe protection is achieved using FSBs, eliminating the need for special covers or custom plexiglass sheets to protect your panels. FSBs (sizes to 4) simply snap onto 35mm IN rail to provide the quickest installation. Modular design also allows for multi pole applications by use of assembly pins. FSBs provide a safe, convenient way of splicing cables, splitting primary power into a variety of secondary circuits or providing a fixed junction tap-off point. FEATURES/BENEFITS: Finger-safe protection: Fully insulated block ensures touch safe isolation of live parts. Recessed termination screws and wire openings provide I0 grade protection and qualify as fingersafe per IEC 59. Compact modularity: Single or multiple pole configurations in the most compact footprint. Allows users to build smaller or higher density panels. Snap on IN-rail mounting: Sizes to 4 feature integral IN rail adaptors allowing for quick and easy installations on 35mm IN rail yielding lower installed costs. Captive termination screws: Unique channel design ensures captive metric wire termination screws. Screws can never be lost. Available accessories: For multi-pole panel mounting, simply snap in pins for rigid fit. Cap plugs provide the ability to maintain touch safety on unused openings. Circuit identification markers simply snap into blocks to I circuits. End anchors provide rigid end stops. (Continued on next page.) RATINGS: Volts: FSB,,3 500VAC/C; FSB4,5 600VAC/C Amps: 75 to 840A SCCR: 600V or less, 00kA with proper fuse; Over 600V, 0kA Contact Technical Services for instruction sheet. AROVALS: UL Recognized Component Guide XCFR, File E7357 CSA Certified: Class 68, File 69363 IEC-947-7-, 59, 68--6, CE Marked E.MERSEN.COM 08 Mersen. All rights reserved. Mersen reserves the right to change, update, or correct, without notice, any information contained in this datasheet.

OWER ISTRIBUTION FSB Finger-Safe ower istribution Blocks FEATURES/BENEFITS (CONTINUE): Multiple wire ratings: rovide users more versatility by offering capability of using multiple conductors in # and /0 openings. AC & C ratings: FSB,, and 3 have been evaluated for use at 500V (AC or C) provided they are installed on IN-rails only and with proper barriers and spacing between poles of opposite polarity. CATALOG NUMBERS Catalog Number Ampere Rating Line Load Aluminum Copper Multiple Wire Ratings (Same Size & Type Wires Only) /0 # () #4 AWG () #8 AWG () # AWG () #6 AWG (-4) #0 AWG (-4) #4 AWG () #6 AWG () #0 AWG () #4 AWG () #8 AWG (-4) # AWG Short Circuit Current Rating (Based on NEC (Connector (Connector er Table 30-6 rated for 90 C rated for 75 C AWG/ mm for 75 C Cu AWG/ kcmil mm ole Cu/AL wire) Cu wire only) wire only) FSBA FSBC 75 /0-#4 70-.5 /0-#4 70-.5 00kA FSBA FSBC 75 /0-#4 70-.5 #-#4 35-.5 4 00kA FSB3A FSB3C 30 350-#6 85-6 /0-#4 70-.5 #8-#4 8-.5 8 00kA FSB4A FSB4C 335 400-#6 85-6 400-#6 85-6 00kA FSB5A FSB5C 840 600-#4 300-5 600-#4 300-5 00kA Contact Mersen Technical Services at technicalservices.nby@mersen.com for fuse type and maximum ampere required. IMENSIONS FSBA FSBA FSB3A FSB4A FSB5A imension FSBC FSBC FSB3C FSB4C FSB5C Figure Figure Figure Figure Figure mm in mm in mm in mm in mm in A 5.4.00 8.4. 46.9.85 39.54 7.84 B 43.3.70 57.8.8 64.3.53 08 4.5 9 3.58 C 49.5.95 56.0. 64.3.53 80 3.5 80 3.5 45..78 5.6.03 59.8.36 75.5.97 - - E 39.4.55 39.4.55 5.5.03 50..97 50..97 F 7.6.86 87.7 3.45 00.8 3.97 45.5 5.73 45 5.7 G 59.6.35 74.6.94 8.4 3.4 0.6 4.75 7.5 5.0 H 5.3 0. 5. 0.0 6.5 0.6 7 0.8 3 0. I - - - - 3.5.4 - - 5.04 J 5.3 0. 6.4 0.5 6.5 0.6 6.5 0.6 6.5 0.6 K 0 0.40.7 0.46 8.9 0.35 6 0.63 8.5 0.34 Figure K Figure H ACCESSORIES Catalog No. FSIN FSCIM FSCIM FSCA FSCA FSCA3 FSEA escription Accessory pin to form multiple pole block Circuit identification marker for /0 & # max. conductors (80 per card) Circuit identification marker for 350, 400 & 600 kcmil max. conductors (56 per card) Cap plug for spare /0 openings Cap plug for spare 350 kcmil openings Cap plug for spare 600 kcmil opening air of end anchors H I K B F G B G E C A J E C F J A E.MERSEN.COM 3

MB Series Open-Style ower istribution Blocks OWER ISTRIBUTION THE NEXT GENERATION OWER ISTRIBUTION BLOCK (B) 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. Unless noted otherwise, 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. B 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 MB series is offered in three size categories: miniature (MB6 and MB63 series), intermediate (MB66 and MB67 series), and large (MB68 and MB69 series), in both aluminum and copper. RATINGS: Volts: 000VAC/C Amps: 65 to 60A based on NEC table 30.5(B)(6) 75ºC ampacities SCCR: 00kA with properly sized fuse (See Mersen s B SCCR guide at ep.mersen.com or contact Mersen Technical Services) AROVALS: UL Listed to subject 953, File E3547 unless noted otherwise CSA Certified Class 68 0 FEATURES/BENEFITS: Adder oles: All sizes have optional adder poles for increased flexibility and ease-of-use. Adder poles can be stacked to form multi-pole units in the field without the use of tools. Adder poles allow for customization of primary and secondary wire combinations. End barriers are also available for sale, catalog numbers can be found in the catalog number selection tables for each size block. Wire Connectors: Standard aluminum and copper wire connectors are available. Aluminum connectors accept both AL or CU wire while copper connectors accept CU wire only. Connectors are all -piece tin-plated. Many part numbers are rated to accept LO-type fine-strand wire, allowing users to connect flexible conductors. (Continued on next page.) 4 E.MERSEN.COM 08 Mersen. All rights reserved. Mersen reserves the right to change, update, or correct, without notice, any information contained in this datasheet.

OWER ISTRIBUTION MB Open-Style ower istribution Blocks FEATURES/BENEFITS (CONTINUE): Insulators: Insulators are virtually unbreakable, made of glass-filled polycarbonate. See-through, hinged safety covers are optional and provide a greater degree of safety and shock resistance where required. Hinged covers can be installed without tools. Spacings: inch through air and inches over surface between uninsulated live parts of opposite polarity meets requirements for feeder and branch circuit applications of UL508A. Safety Covers: olycarbonate safety covers provide dead-front protection. One cover is needed for each pole. Each cover has a test probe hole in the center for circuit checking. Covers are optional accessories and catalog numbers can be found in the catalog selection tables for each size block. AITIONAL SECIFICATIONS: Wire Type: Copper Blocks: 60/75ºC Solid/Stranded CU; Aluminum Blocks: 60/75/90ºC Solid/Stranded AL and CU Connector: Copper Blocks: Highly conductive tin-plated copper; Aluminum Blocks: Highly conductive tin-plated aluminum Insulating Material: Glass-filled polycarbonate with verified dielectric strength in excess of 500V Flammability: UL94-V0 Mounting: irect panel mount Environmental: RoHS compliant, Lead Free ART SELECTION NOTES MBs in each size category come in one, two, and three pole configurations (ending in -, -, and -3 accordingly). Users also have the ability to field install additional poles, end barriers, and safety covers. Safety Cover Optional, snap-on, hinged safety cover MBC663 Miniature Series MBC6667 Intermediate Series MBC6869 Large Series End Barrier Snap-on to Adder pole to complete assembly MBE663 Miniature Series MBE6667 Intermediate Series MBE6869 Large Series Adder ole Snap-on Adder poles to fully assembled units to add additional poles in the field. Adder pole catalog numbers in all. Adder ole Field assemble Adder poles to form multi-pole units. E.MERSEN.COM 5

MB6 AN MB63 Open-Style ower istribution Blocks OWER ISTRIBUTION CATALOG NUMBERS, MINIATURE ALUMINUM MBs, Line Side Load Side Catalog Numbers Ampere Rating AER - - 3- Cu Wire Al Wire 4-4 4-4 MB6300 MB630 MB630 MB6303 85 65 4-4 4-4 85 4 MB6360 MB636 MB636 MB6363 6-4 (LO) 6-4 (LO) 65 (LO) 65 /0-4 /0-4 75 MB6350 MB635 MB635 MB6353 /0-4 (LO) /0-4 (LO) 5 (LO) 35 /0-4 -4 75 MB6390 MB639 MB639 MB6393 /0-4 (LO) 3-4 (LO) 5 (LO) 35 /0-4 4-4 75 4 MB6330 MB633 MB633 MB6333 /0-4 (LO) 6-4 (LO) 5 (LO) 35 (LO) Indicates Ampere Rating or applicable to LO class wire. CATALOG NUMBERS, MINIATURE ALUMINUM MBs, BOX-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Studs Stud Size AER - - 3- Ratings (Cu) Ratings (Al) /0-4 /4" - 0 x 5/8" MB6340 MB634 MB634 MB6343 75 35 CATALOG NUMBERS, MINIATURE COER MBs, Line Side Load Side Catalog Numbers Ampere Rating Wire Range AER - - 3- Rating (Cu) 4-4 4-4 MB600 MB60 MB60 MB603 85 4-4 4-4 4 MB660 MB66 MB66 MB663 85 /0-4 /0-4 MB650 MB65 MB65 MB653 75 /0-4 -4 MB690 MB69 MB69 MB693 75 /0-4 4-4 4 MB630 MB63 MB63 MB633 75 (LO) Indicates Ampere Rating or applicable to LO class wire. CATALOG NUMBERS, MINIATURE COER MBs, STU-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Studs Studs Stud Size Stud Size AER - - 3- Ratings (Cu) Ratings (Al) /4"-0 X 5/8" /4"-0 X 5/8" MB600 MB60 MB60 MB603 40 40 Hinged Safety Cover for MB6 and MB63 series: Catalog number MBC663 End Barrier for MB6 and MB63 series: Catalog Number MBE663 6 E.MERSEN.COM

OWER ISTRIBUTION MB66 AN MB67 Open-Style ower istribution Blocks CATALOG NUMBERS, INTERMEIATE ALUMINUM MBs, Line Side Load Side Catalog Numbers Amp Rating AER - - 3- Cu Wire Al Wire /0-4 /0-4 MB67050 MB6705 MB6705 MB67053 75 35 /0-4 -4 75 4 MB67570 MB6757 MB6757 MB67573 /0-4 (LO) 4-4 (LO) 50 (LO) 35 /0-4 -4 75 6 MB67560 MB6756 MB6756 MB67563 /0-4 (LO) 4-4 (LO) 50 (LO) 35 /0-4 -4 8 75 MB67580 MB6758 MB6758 MB67583 /0-4 (LO) 4-4 (LO) 8 50 (LO) 35 /0-4 6-4 0 75 MB67590 MB6759 MB6759 MB67593 /0-4 (LO) 8-4 (LO) 0 50 (LO) 35 /0-4 0-4 75 MB670 MB67 MB67 MB673 /0-4 (LO) -4 (LO) 50 (LO) 35 30 MB67000 MB6700 MB6700 MB67003 33-6 (LO) 33-6 (LO) 85 (LO) 50 /0-4 33-6 (LO) /0-4 (LO) MB6700 MB670 MB670 MB6703 30 50-4 4 30 MB67670 MB6767 MB6767 MB67673 33-6 (LO) 4-4 (LO) 4 85 (LO) 50-4 30 6 MB67660 MB6766 MB6766 MB67663 33-6 (LO) 4-4 (LO) 85 (LO) 50-4 30 8 MB67630 MB6763 MB6763 MB67633 33-6 (LO) 4-4 (LO) 85 (LO) 50 6-4 0 MB67650 MB6765 MB6765 MB67653 30 50 0-4 5 MB6760 MB676 MB676 MB6763 30 50 500-4 500-4 MB67400 MB6740 MB6740 MB67403 380 30 500-4 & -4 & 3 MB67450 MB6745 MB6745 MB67453 380 30 500-4 4/0-0 MB6740 MB674 MB674 MB6743 380 30 500-4 /0-4 4 350 MB6740 MB674 MB674 MB6743 373-4 (LO) /0-4 (LO) 4 30 (LO) 30 500-4 /0-4 6 350 MB67460 MB6746 MB6746 MB67463 373-4 (LO) 4-4 (LO) 6 30 (LO) 30 500-4 -4 8 MB67430 MB6743 MB6743 MB67433 380 30 500-4 6-4 0 MB67480 MB6748 MB6748 MB67483 380 30 500-4 0-4 8 MB67490 MB6749 MB6749 MB67493 380 30 /0-4 /0-4 350 MB6700 MB670 MB670 MB6703 /0-4 (LO) /0-4 (LO) 300 (LO) 70 /0-4 -4 350 6 MB6750 MB675 MB675 MB6753 /0-4 (LO) 3-4 (LO) 300 (LO) 70 /0-4 -4 8 MB6760 MB676 MB676 MB6763 350 70 /0-4 6-4 0 MB67530 MB6753 MB6753 MB67533 350 70 /0-4 0-4 5 MB67550 MB6755 MB6755 MB67553 350 70 4/0-6 4/0-6 460 MB6750 MB675 MB675 MB6753 3/0-6 (LO) 3/0-6 (LO) 400 (LO) 360 4/0-6 -4 6 460 MB67540 MB6754 MB6754 MB67543 3/0-6 (LO) 4-4 (LO) 6 400 (LO) 360 * Indicates part numbers that are not UL listed (LO) Indicates Ampere Rating or applicable to Copper LO class wire (M) Indicates connection UL approved for use with multiple conductors in the same opening. Quantities and sizes of wires are as follows: #-#4 (4) #4 (4) # () #0 4/0-#6 () # () #3 () #4 () #6 00-#4 () #4 () #3 () # () # () /0 () #/0 () 3/0 CATALOG NUMBERS, INTERMEIATE ALUMINUM MBs, BOX-STU CONFIGURATION Line Side Load Side Catalog Numbers Amp Rating Inputs Stud Size Outputs AER - - 3- Ratings (Cu) Ratings (Al) 3/8"-6 X -/6" MB6750 MB675 MB675 MB6753 30 50 500-4 3/8"-6 X -/6" MB670 MB67 MB67 MB673 380 30 Hinged Safety Cover for MB66 and MB67 series: Catalog number MBC6667 End Barrier for MB66 and MB67 series: Catalog Number MBE6667 E.MERSEN.COM 7

MB66 AN MB67 Open-Style ower istribution Blocks OWER ISTRIBUTION CATALOG NUMBERS, INTERMEIATE COER MBs, Line Side Load Side Catalog Numbers Ampere Rating AER - - 3- Cu Wire /0-4 /0-4 MB66050 MB6605 MB6605 MB66053 75 /0-4 -4 4 MB66570 MB6657 MB6657 MB66573 75 /0-4 -4 6 MB66560 MB6656 MB6656 MB66563 75 /0-4 -4 8 MB66580 MB6658 MB6658 MB66583 75 /0-4 6-4 0 MB66590 MB6659 MB6659 MB66593 75 /0-4 0-4 MB660 MB66 MB66 MB663 75 MB66000 MB6600 MB6600 MB66003 30 /0-4 MB6600 MB660 MB660 MB6603 30-4 4 MB66670 MB6667 MB6667 MB66673 30-4 6 MB66660 MB6666 MB6666 MB66663 30-4 8 MB66630 MB6663 MB6663 MB66633 30 6-4 0 MB66650 MB6665 MB6665 MB66653 30 0-4 5 MB6660 MB666 MB666 MB6663 30 500-4 500-4 MB66400 MB6640 MB6640 MB66403 380 500-4 & -4 & 3 MB66450 MB6645 MB6645 MB66453 380 500-4 /0-4 4 MB6640 MB664 MB664 MB6643 380 500-4 -4 6 MB66460 MB6646 MB6646 MB66463 380 500-4 0-4 8 MB66490 MB6649 MB6649 MB66493 380 /0-4 /0-4 MB6600 MB660 MB660 MB6603 350 /0-4 -4 6 MB6650 MB665 MB665 MB6653 350 /0-4 -4 8 MB6660 MB666 MB666 MB6663 350 /0-4 6-4 0 MB66530 MB6653 MB6653 MB66533 350 /0-4 0-4 5 MB66550 MB6655 MB6655 MB66553 350 4/0-6 4/0-0 MB6650 MB665 MB665 MB6653 460 4/0-6 -4 6 MB66540 MB6654 MB6654 MB66543 460 (LO) Indicates Ampere Rating or applicable to LO class wire CATALOG NUMBERS, INTERMEIATE COER MBs, STU-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Studs Studs Stud Range Stud Size AER - - 3- Ratings (Cu) Ratings (Al) /4"-0 X -5/6" /4"-0 X -5/6" MB6670 MB667 MB667 MB6673 55 55 /4"-0 X -5/6" 3/8"-6 X -/8" MB6600 MB660 MB660 MB6603 55 55 3/8"-6 X -/8" /4"-0 X -5/6" MB6630 MB663 MB663 MB6633 400 400 3/8"-6 X -/8" 3/8"-6 X -/8" MB6660 MB666 MB666 MB6663 400 400 Hinged Safety Cover for MB66 and MB67 series: Catalog number MBC6667 End Barrier for MB66 and MB67 series: Catalog Number MBE6667 8 E.MERSEN.COM

OWER ISTRIBUTION MB68 AN MB69 Open-Style ower istribution Blocks CATALOG NUMBERS, LARGE ALUMINUM MBs, Line Side Load Side Catalog Numbers Wire Wire Number of oles Ampere Rating Range Range AER - - 3- Ratings (Cu) Ratings (Al) /0-4 6 MB6970 MB697 MB697 MB6973 30 50 4-4 MB6950 MB695 MB695 MB6953 30 50 500-4 500-4 MB69050 MB6905 MB6905 MB69053 380 30 500-4 MB69060 MB6906 MB6906 MB69063 380 30 500-4 4/0-6 4 MB6950* MB695* MB695* MB6953* 380 30 500-4 /0-4 6 MB69070 MB6907 MB6907 MB69073 380 30 500-4 4-4 MB69080 MB6908 MB6908 MB69083 380 30 600-600- MB69640 MB6964 MB6964 MB69643 40 340 000-50 000-50 MB69000 MB6900 MB6900 MB69003 545 445 000-50 500-4 MB6900 MB690 MB690 MB6903 545 445 000-50 MB6900 MB690 MB690 MB6903 545 445 000-50 /0-4 6 MB69030 MB6903 MB6903 MB69033 545 445 000-50 4-4 MB69040 MB6904 MB6904 MB69043 545 445 4-4 4-4 MB6980 MB698 MB698 MB6983 70 30 /0-4 4-4 MB6960 MB696 MB696 MB6963 350 70 /0-4 0-4 0 MB69600 MB6960 MB6960 MB69603 350 70 60 MB690 MB69 MB69 MB693 33-6 (LO) 33-6 (LO) 570 (LO) 500 /0-4 6 MB6930 MB693 MB693 MB6933 60 500 4-4 M 60 MB6940 MB694 MB694 MB6943 33-6 (LO) 6-4 (LO) 570 (LO) 500 500-4 500-4 M 760 MB69090 MB6909 MB6909 MB69093 373-4 (LO) 373-4 (LO) 640 (LO) 60 500-4 4/0-6 760 4 MB6930 MB693 MB693 MB6933 373-4 (LO) 3/0-6 (LO) 640 (LO) 60 500-4 /0-4 6 MB6900 MB690 MB690 MB6903 760 60 500-4 /0-4 8 MB69350* MB6935* MB6935* MB69353* 760 60 500-4 4-4 760 MB690 MB69 MB69 MB693 373-4 (LO) 6-4 (LO) 640 (LO) 60 600-600- MB69650 MB6965 MB6965 MB69653 840 680 600-4-4 & 3/0-0 4 & 4 MB69540 MB6954 MB6954 MB69543 840 680 * Indicates part numbers that are not UL listed (LO) Indicates Ampere Rating or applicable to Copper LO class wire (M) Indicates connection UL approved for use with multiple conductors in the same opening. Quantities and sizes of wires are as follows: #-#4 (4) #4 (4) # () #0 4/0-#6 () # () #3 () #4 () #6 00-#4 () #4 () #3 () # () # () /0 () #/0 () 3/0 CATALOG NUMBERS, LARGE ALUMINUM MBs, BOX-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Studs Stud Size AER - - 3- Ratings (Cu) Ratings (Al) 500-4 3/8"-6 X MB690 MB69 MB69 MB693 380 30 500-4 3/8"-6 X " MB6970 MB697 MB697 MB6973 380 30 000-50 3/8"-6 X " MB6980 MB698 MB698 MB6983 545 445 500-4 3/8"-6 X " MB6930 MB693 MB693 MB6933 760 60 Hinged Safety Cover for MB68 and MB69 series: Catalog number MBC6869 End Barrier for MB68 and MB69 series: Catalog Number MBE6869 E.MERSEN.COM 9

MB68 AN MB69 Open-Style ower istribution Blocks OWER ISTRIBUTION CATALOG NUMBERS, LARGE COER MBs, Line Side Load Side Catalog Numbers Ampere Rating AER - - 3- Cu Wire 4-4 MB6850 MB685 MB685 MB6853 30 500-4 MB68060 MB6806 MB6806 MB68063 380 /0-4 4-4 MB6860 MB686 MB686 MB6863 350 MB680 MB68 MB68 MB683 60 4/0-0 4 MB6830* MB683* MB683* MB6833* 60 /0-4 6 MB6830 MB683 MB683 MB6833 60 4-4 MB6840 MB684 MB684 MB6843 60 500-4 500-4 MB68090 MB6809 MB6809 MB68093 760 500-4 4/0-0 4 MB6830 MB683 MB683 MB6833 760 500-4 /0-4 6 MB6800 MB680 MB680 MB6803 760 500-4 4-4 MB680 MB68 MB68 MB683 760 * Indicates part numbers that are not UL listed CATALOG NUMBERS, LARGE COER MBs, STU-BOX CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Stud Size Stud per ole AER - - 3- Ratings (Cu) Ratings (Al) /"-3 X " 4-4 MB6890 MB689 MB689 MB6893 000 000 CATALOG NUMBERS, LARGE COER MBs, STU-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Stud Size Stud Stud AER - - 3- Ratings (Cu) Ratings (Al) /"-3 X -3/8" /"-3 X -3/8" MB680* MB68* MB68* MB683* 400 400 Hinged Safety Cover for MB68 and MB69 series: Catalog number MBC6869 End Barrier for MB68 and MB69 series: Catalog Number MBE6869 0 E.MERSEN.COM

OWER ISTRIBUTION MB OUBLE-WIE Open-Style ower istribution Blocks The MB double-wide series are designed for custom applications where large ampacities are required. oublewide blocks are not UL or CSA certified unless otherwise noted. All double-wide blocks are Mersen self-certified and approved. OUBLE WIE ALUMINUM CATALOG NUMBERS, Line Side Load Side Catalog Numbers Ampere Rating - Cu Wire Al Wire 000-50 500-4 4 MB6956 090 890 500-4 3 /0-4 8 MB90006 40 930 600-3 600-3 MB6933 60 00 500-4 4 500-4 4 MB90007 50 40 500-4 4 /0-6 MB900 50 40 500-4 4 6-4 & /0-4 & 4 MB695 50 40 500-4 4 4-4 30 MB699 50 40 600-4 600-4 MB6934 680 360 OUBLE WIE COER CATALOG NUMBERS, Line Side Load Side Catalog Numbers Ampere Rating - Cu Wire 500-4 3 4/0-0 6 MB8000 40 500-4 4 500-4 4 MB80003 50 500-4 4 /0-6 MB800 50 500-4 7 500-4 7 MB80006 T 660 T Indicates that this block is triple-wide OUBLE WIE COER CATALOG NUMBERS, BOX-STU CONFIGURATION Line Side Load Side Catalog Numbers Ampere Rating Stud Size Studs - Ratings (Cu) 500-4 4 3/8"-6 X " 4 MB90009 50 Hinged Safety Cover for ouble-wide MB series: Catalog number MBC69W E.MERSEN.COM

MB Open-Style ower istribution Blocks OWER ISTRIBUTION IMENSIONS Miniature (MB6333 shown for reference) Intermediate (MB67563 shown for reference) Large (MB693 shown for reference) E.MERSEN.COM

OWER ISTRIBUTION MB Open-Style ower istribution Blocks IMENSIONS (CONTINUE) ouble-wide (MB6933 shown for reference) Triple-Wide (MB80006 shown for reference) E.MERSEN.COM 3