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MPDB Series UL 1953 Open-Style Power Distribution Blocks

Approvals & Standards
UL Listed to subject 1953, File E352417 unless noted otherwise
CSA Certified Class 6228 01

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 fulfilling requirements for fixed 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.

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 fulfilling requirements for fixed 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.

Key features & benefits

  • Adder Poles: 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 1-piece tin-plated. Many part numbers are rated to accept DLO-type fine-strand wire, allowing users to connect flexible conductors.

  • 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: 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.

Applications

  • Splicing cables

  • Splitting primary power into secondary circuits

  • Fixed junction tap-off points.

Technical Specifications
Frequency (Hz) 50/60 Hz
Amperage Range 65 to 2260 A
Flammability Rating UL94 V-0
Wire Insulation Rating 60/75C
Wire Type Solid/Stranded CU

Reference Finder

480 references in this series

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Item number Number of openings per pole (Primary) Wire Range (Primary) Wire Range (Primary) DLO Number of poles Product weight
MPDB66521 See product
 2 4/0-#10 - 1-Pole 0.5443kg
MPDB66522 See product
 2 4/0-#10 - 2-Pole 1.0433kg
MPDB66523 See product
 2 4/0-#10 - 3-Pole 1.5422kg
MPDB66530 See product
 2 2/0-#14 - Adder 0.499kg
MPDB66531 See product
 2 2/0-#14 - 1-Pole 0.5443kg
MPDB66532 See product
 2 2/0-#14 - 2-Pole 1.0433kg
MPDB66533 See product
 2 2/0-#14 - 3-Pole 1.5422kg
MPDB66540 See product
 2 4/0-#6 - Adder 0.499kg
MPDB66541 See product
 2 4/0-#6 - 1-Pole 0.5443kg
MPDB66542 See product
 2 4/0-#6 - 2-Pole 1.0433kg
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