A1
MPDB Series Open-Style Power Distribution Blocks
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 fullling requirements for xed
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.
Features/Benefits:
•Adder Poles
All sizes have optional adder poles for increased exibility and ease-of-use. Adder
poles can be stacked to form multi-pole units in the eld 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 1-piece tin-plated.
•Insulators
Insulators are virtually unbreakable, made of glass-lled 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
1 inch through air and 2 inches over surface between uninsulated live parts of
opposite polarity meets requirements for feeder and branch circuit applications of
UL508A.
•Safety Covers
Polycarbonate 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.
Additional Specifications:
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-lled polycarbonate with veried dielectric strength
in excess of 2500V
Flammability: UL94-V0
Mounting: Direct panel mount
Environmental: RoHS compliant, Lead Free
Ratings:
Volts : 600VAC/DC
Amps : 65 to 2260A
based on NEC table
310.15(B)(16) 75ºC
ampacities
SCCR : 100kA with properly
sized fuse
(See Mersen’s PDB SCCR
guide at ep-us.mersen.com
or contact Mersen technical
services)
Approvals:
•UL Listed to subject 1953,
File E352417
•CSA Certified Class 6228 01
Available
Now!
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MPDB Series Open-Style Power Distribution Blocks
Dimensions
Miniature (MPDB63133 shown for reference)
Intermediate (MPDB67563 shown for reference)
Large (MPDB69123 shown for reference)
For the most current product performance data visit ep-us.mersen.com and use catalog search.
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I
MPDB62 and MPDB63 Open-Style PDBs
Line Load Catalog Numbers - Aluminum Catalog Numbers - Copper Amp Rating
per Pole
Wire
Range
Open-
ings
per Pole
Wire
Range
Open-
ings
per Pole
Number of Poles Number of Poles
ADDER 1-P 2-P 3-P ADDER 1-P 2-P 3-P Al Cu
Box-Box Configuration
4 - 14 14 - 14
1 MPDB63100 MPDB63101 MPDB63102 MPDB63103 MPDB62100 MPDB62101 MPDB62102 MPDB62103
65 85
4 MPDB63160 MPDB63161 MPDB63162 MPDB63163 MPDB62160 MPDB62161 MPDB62162 MPDB62163
2/0 - 14 1
2/0 - 14 1 MPDB63150 MPDB63151 MPDB63152 MPDB63153 MPDB62150 MPDB62151 MPDB62152 MPDB62153
135 1752 - 14 2 MPDB63190 MPDB63191 MPDB63192 MPDB63193 MPDB62190 MPDB62191 MPDB62192 MPDB62193
4 - 14 4 MPDB63130 MPDB63131 MPDB63132 MPDB63133 MPDB62130 MPDB62131 MPDB62132 MPDB62133
Box-Stud Configuration
2/0 - 14 11/4-20 x 5/8 1 MPDB63140 MPDB63141 MPDB63142 MPDB63143 - - - - 135 175
Stud-Stud Configuration
1/4-20 x 5/8 11/4-20 x 5/8 1 - - - - MPDB62200 MPDB62201 MPDB62202 MPDB62203 240 240
Catalog Numbers (Miniature)
Hinged Safety Cover for MPDB62 and MPDB63 series: Catalog number MPDBC6263
End Barrier for MPDB62 and MPDB63 series: Catalog Number MPDBE6263
Adder Pole Installation Instructions
Adder Block
Snap-on Adder blocks
to fully assembled
units to add additional
poles in the eld
Adder Block
Field assemble
Adder blocks to form
multi-pole units.
Safety Cover
Optional, snap-on, hinged safety cover
MPDBC6263 Miniature Series
MPDBC6667 Intermediate Series
MPDBC6869 Large Series
End Barrier
Snap-on to Adder block to complete
assembly.
MPDBE6263 Miniature Series
MPDBE6667 Intermediate Series
MPDBE6869 Large Series
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MPDB66 and MPDB67 Open-Style PDBs
Catalog Numbers (Intermediate)
Line Load Catalog Numbers - Aluminum Catalog Numbers - Copper Amp Rating
per Pole
Wire
Range
Open-
ings
per Pole
Wire
Range
Open-
ings
per Pole
Number of Poles Number of Poles
ADDER 1-P 2-P 3-P ADDER 1-P 2-P 3-P Al Cu
Box-Box Configuration
2/0 - 14 1
2/0 - 14 1 MPDB67050 MPDB67051 MPDB67052 MPDB67053 MPDB66050 MPDB66051 MPDB66052 MPDB66053
135 175
2 - 14 4 MPDB67570 MPDB67571 MPDB67572 MPDB67573 MPDB66570 MPDB66571 MPDB66572 MPDB66573
2 - 14 6 MPDB67560 MPDB67561 MPDB67562 MPDB67563 MPDB66560 MPDB66561 MPDB66562 MPDB66563
2 - 14 8 MPDB67580 MPDB67581 MPDB67582 MPDB67583 MPDB66580 MPDB66581 MPDB66582 MPDB66583
6 - 14 10 MPDB67590 MPDB67591 MPDB67592 MPDB67593 MPDB66590 MPDB66591 MPDB66592 MPDB66593
10 - 14 12 MPDB67110 MPDB67111 MPDB67112 MPDB67113 MPDB66110 MPDB66111 MPDB66112 MPDB66113
350 - 6 1
350 - 6 1 MPDB67000 MPDB67001 MPDB67002 MPDB67003 MPDB66000 MPDB66001 MPDB66002 MPDB66003
250 310
2/0 - 14 2 MPDB67010 MPDB67011 MPDB67012 MPDB67013 MPDB66010 MPDB66011 MPDB66012 MPDB66013
2 - 14 4 MPDB67670 MPDB67671 MPDB67672 MPDB67673 MPDB66670 MPDB66671 MPDB66672 MPDB66673
2 - 14 6 MPDB67660 MPDB67661 MPDB67662 MPDB67663 MPDB66660 MPDB66661 MPDB66662 MPDB66663
2 - 14 8 MPDB67630 MPDB67631 MPDB67632 MPDB67633 MPDB66630 MPDB66631 MPDB66632 MPDB66633
6 - 14 10 MPDB67650 MPDB67651 MPDB67652 MPDB67653 MPDB66650 MPDB66651 MPDB66652 MPDB66653
10 - 14 15 MPDB67620 MPDB67621 MPDB67622 MPDB67623 MPDB66620 MPDB66621 MPDB66622 MPDB66623
500 - 4 1
500 - 4 1 MPDB67400 MPDB67401 MPDB67402 MPDB67403 MPDB66400 MPDB66401 MPDB66402 MPDB66403
310 380
350-6 & 2-14 1 & 3 MPDB67450 MPDB67451 MPDB67452 MPDB67453 MPDB66450 MPDB66451 MPDB66452 MPDB66453
4/0 - 10 2 MPDB67420 MPDB67421 MPDB67422 MPDB67423 - - - -
2/0 - 14 4 MPDB67410 MPDB67411 MPDB67412 MPDB67413 MPDB66410 MPDB66411 MPDB66412 MPDB66413
2 - 14 6 MPDB67460 MPDB67461 MPDB67462 MPDB67463 MPDB66460 MPDB66461 MPDB66462 MPDB66463
2 - 14 8 MPDB67430 MPDB67431 MPDB67432 MPDB67433 - - - -
6 - 14 10 MPDB67480 MPDB67481 MPDB67482 MPDB67483 - - - -
10-14 18 MPDB67490 MPDB67491 MPDB67492 MPDB67493 MPDB66490 MPDB66491 MPDB66492 MPDB66493
2/0 - 14 2
2/0 - 14 2 MPDB67020 MPDB67021 MPDB67022 MPDB67023 MPDB66020 MPDB66021 MPDB66022 MPDB66023
270 350
2 - 14 6 MPDB67510 MPDB67511 MPDB67512 MPDB67513 MPDB66510 MPDB66511 MPDB66512 MPDB66513
2 - 14 8 MPDB67610 MPDB67611 MPDB67612 MPDB67613 MPDB66610 MPDB66611 MPDB66612 MPDB66613
6 - 14 10 MPDB67530 MPDB67531 MPDB67532 MPDB67533 MPDB66530 MPDB66531 MPDB66532 MPDB66533
10 - 14 15 MPDB67550 MPDB67551 MPDB67552 MPDB67553 MPDB66550 MPDB66551 MPDB66552 MPDB66553
4/0 - 6 2
4/0 - 10 2 MPDB67520 MPDB67521 MPDB67522 MPDB67523 MPDB66520 MPDB66521 MPDB66522 MPDB66523
360 460
2 - 14 6 MPDB67540 MPDB67541 MPDB67542 MPDB67543 MPDB66540 MPDB66541 MPDB66542 MPDB66543
Box-Stud Configuration
350 - 6 13/8-16 x 1-1/16 1 MPDB67250 MPDB67251 MPDB67252 MPDB67253 - - - - 250 310
500 - 4 13/8-16 x 1-1/16 1 MPDB67220 MPDB67221 MPDB67222 MPDB67223 - - - - 310 380
Stud-Stud Configuration
1/4-20 x 1-5/16 11/4-20 x 1-5/16 1 - - - - MPDB66270 MPDB66271 MPDB66272 MPDB66273 155 155
3/8-16 x 1-1/8 1
1/4-20 x 1-5/16 2 - - - - MPDB66230 MPDB66231 MPDB66232 MPDB66233
400 400
3/8-16 x 1-1/8 1 - - - - MPDB66260 MPDB66261 MPDB66262 MPDB66263
Hinged Safety Cover for MPDB66 and MPDB67 series: Catalog number MPDBC6667
End Barrier for MPDB66 and MPDB67 series: Catalog Number MPDBE6667
For the most current product performance data visit ep-us.mersen.com and use catalog search.
A5
I
MPDB68 and MPDB69 Open-Style PDBs
Line Load Catalog Numbers - Aluminum Catalog Numbers - Copper Amp Rating
per Pole
Wire
Range
Open-
ings
per Pole
Wire
Range
Open-
ings
per Pole
Number of Poles Number of Poles
ADDER 1-P 2-P 3-P ADDER 1-P 2-P 3-P Al Cu
Box-Box Configuration
350 - 6 1
2/0 - 14 6 MPDB69170 MPDB69171 MPDB69172 MPDB69173 - - - -
250 310
4 - 14 12 MPDB69150 MPDB69151 MPDB69152 MPDB69153 MPDB68150 MPDB68151 MPDB68152 MPDB68153
500 - 4 1
500 - 4 1 MPDB69050 MPDB69051 MPDB69052 MPDB69053 - - - -
310 380
350 - 6 2 MPDB69060 MPDB69061 MPDB69062 MPDB69063 MPDB68060 MPDB68061 MPDB68062 MPDB68063
4/0 - 6 4 MPDB69510 MPDB69511 MPDB69512 MPDB69513 - - - -
2/0 - 14 6 MPDB69070 MPDB69071 MPDB69072 MPDB69073 - - - -
4 - 14 12 MPDB69080 MPDB69081 MPDB69082 MPDB69083 - - - -
600 - 2 1600 - 2 1 MPDB69640 MPDB69641 MPDB69642 MPDB69643 - - - - 340 420
1000 - 250 1
1000 - 250 1 MPDB69000 MPDB69001 MPDB69002 MPDB69003 - - - -
445 545
500 - 4 2 MPDB69010 MPDB69011 MPDB69012 MPDB69013 - - - -
350 - 6 2 MPDB69020 MPDB69021 MPDB69022 MPDB69023 - - - -
2/0 - 14 6 MPDB69030 MPDB69031 MPDB69032 MPDB69033 - - - -
4 - 14 12 MPDB69040 MPDB69041 MPDB69042 MPDB69043 - - - -
4 - 14 24 - 14 12 MPDB69180 MPDB69181 MPDB69182 MPDB69183 - - - - 130 170
2/0 - 14 2
4 - 14 12 MPDB69160 MPDB69161 MPDB69162 MPDB69163 MPDB68160 MPDB68161 MPDB68162 MPDB68163
270 350
10 - 14 20 MPDB69600 MPDB69601 MPDB69602 MPDB69603 - - - -
350 - 6 2
350 - 6 2 MPDB69120 MPDB69121 MPDB69122 MPDB69123 MPDB68120 MPDB68121 MPDB68122 MPDB68123
500 620
4/0 - 10 4 - - - - MPDB68320 MPDB68321 MPDB68322 MPDB68323
2/0 - 14 6 MPDB69130 MPDB69131 MPDB69132 MPDB69133 MPDB68130 MPDB68131 MPDB68132 MPDB68133
4 - 14 12 MPDB69140 MPDB69141 MPDB69142 MPDB69143 MPDB68140 MPDB68141 MPDB68142 MPDB68143
500 - 4 2
500 - 4 2 MPDB69090 MPDB69091 MPDB69092 MPDB69093 MPDB68090 MPDB68091 MPDB68092 MPDB68093
620 760
4/0 - 6 4 MPDB69310 MPDB69311 MPDB69312 MPDB69313 - - - -
4/0 - 10 4 - - - - MPDB68310 MPDB68311 MPDB68312 MPDB68313
2/0 - 14 6 MPDB69100 MPDB69101 MPDB69102 MPDB69103 MPDB68100 MPDB68101 MPDB68102 MPDB68103
2/0 - 14 8 MPDB69350 MPDB69351 MPDB69352 MPDB69353 - - - -
4 - 14 12 MPDB69110 MPDB69111 MPDB69112 MPDB69113 - - - -
600 - 2 2
600 - 2 2 MPDB69650 MPDB69651 MPDB69652 MPDB69653 - - - -
680 840
4-14 & 3/0-10 4 & 4 MPDB69540 MPDB69541 MPDB69542 MPDB69543 - - - -
Box-Stud Configuration
500 - 4 1
3/8-16 x 1 1 MPDB69210 MPDB69211 MPDB69212 MPDB69213 - - - -
310 380
3/8-16 x 1 2 MPDB69270 MPDB69271 MPDB69272 MPDB69273 - - - -
1000 - 250 11/2-13 x 1-3/16 1 MPDB69280 MPDB69281 MPDB69282 MPDB69283 - - - - 445 545
1/2-13 x 1 14 - 14 12 - - - - MPDB68290 MPDB68291 MPDB68292 MPDB68293 1000 1000
500 - 4 23/8-16 x 1 2 MPDB67230 MPDB67231 MPDB67232 MPDB67233 - - - - 620 760
Stud-Stud Configuration
1/2-13 x 1-3/8 11/2-13 x 1-3/8 1 - - - - MPDB68220 MPDB68221 MPDB68222 MPDB68223 400 400
Catalog Numbers (Large)
Hinged Safety Cover for MPDB68 and MPDB69 series: Catalog number MPDBC6869
End Barrier for MPDB68 and MPDB69 series: Catalog Number MPDBE6869
A6
MPDB Double-Wide Open-Style PDBs
Catalog Numbers (Double-Wide)
Line Load Aluminum Copper Amp Rating
per Pole
Wire
Range
Openings
per Pole
Wire
Range
Openings
per Pole
Poles Poles
1-P 1-P Al Cu
Box-Box Configuration
1000 - 250 2500 - 4 4 MPDB69561 - 890 1090
500 - 4 3
4/0 - 10 6 - MPDB800011
930 1140
2/0 - 14 8 MPDB900061 -
600 - 2 3600 - 2 3 MPDB69331 - 1020 1260
500 - 4 4
500 - 4 4 MPDB900071 MPDB800031
1240 15202/0 - 12 6 MPDB900121 MPDB800121
6 - 14 30 MPDB69191 -
600 - 2 4600 - 2 4 MPDB69341 - 1360 1680
500 - 4 7500 - 4 7 - MPDB800061* 2170 2660
Box-Stud Configuration
500 - 4 43/8-16 x 1 4 MPDB900091 - 1240 1520
* This block is triple-wide
The MPDB double-wide series are designed for custom applications where large ampacities are required. Double-wide blocks
are not UL or CSA certied unless otherwise notice. All double-wide blocks are Mersen self-certied and approved.
Dimensions: