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Mersen MPDB67432 - Open-Style PDB UL 1953 1000V 310A Tin-plated Aluminum - 380A 2-Pole 1 - 8 openings; 500-#4 --- #2-#14 Box to Box
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Mersen MPDB67432 Open-Style PDB UL 1953 1000V 310A Tin-plated Aluminum - 380A 2-Pole 1 - 8 openings…

Alternate Item Number: MPDB67432

UPC: 782001451790

Documents & Media
Line DrawingSpecification Sheet

Contact for Pricing

Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.

Overview

This 2-pole PDB delivers a primary input rating of 310A for aluminum wire and 380A for copper wire, making it suitable for feeder and branch circuit installations where high current handling is required. The open-style design provides unobstructed access for wiring, simplifying installation and maintenance in industrial and commercial electrical panels. Key specifications include: - **Pole Configuration**: 2-pole design for balanced power distribution. - **Line Side**: Single opening per pole, accommodating 500-#4 AWG wire. - **Load Side**: Eight openings per pole, supporting wire sizes from #2 to #14 AWG. - **Construction**: Tin-plated aluminum housing ensures corrosion resistance and reliable electrical conductivity. The MPDB67432 is part of Mersen’s intermediate-sized PDB series (MPDB66 and MPDB67), designed for flexibility in wiring configurations. Its open-style architecture allows for easy inspection and modification, reducing downtime in critical applications. The 2-pole configuration and wide wire range make it a versatile solution for both primary and secondary power distribution tasks.
  • 2-pole design for balanced power distribution
  • Primary input: 310A (Al), 380A (Cu); 1000V rating
  • Line side: 1 opening per pole for 500-#4 AWG wire
  • Load side: 8 openings per pole for #2 to #14 AWG wire
  • Tin-plated aluminum construction for corrosion resistance

Specifications

Amperage Rating
380 A
Ampere Rating (AL)
310 A
Ampere Rating (CU)
380 A
Application
Splicing cables Splitting primary power into secondary circuits Fixed junction tap-off points.
Brand Name
Mersen
Connection
Box To Box
Connection Type
Box to Box
Connector Type (Primary)
Box
Connector Type (Secondary)
Box
Current Rating
310 A
Material
Tin-plated Aluminum
Mounting
Direct Screw Mount
Number Of Terminals
2-pole
Poles
2-Pole
Series
MPDB
Size
Intermediate (MPDB66 and MPDB67 series)
Size
3.08 x 3.57 x 3.25 in
Size
78.232 x 90.678 x 82.55 mm
Special Features
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.
Standard
UL Listed to subject 1953, File E352417 unless noted otherwise CSA Certified Class 6228 01
Type
Open-Style Power Distribution Blocks
Voltage Rating
1000 V
Wire Range (Primary)
500-#4
Wire Range (Secondary)
#2-#14
Package Dimensions (L x W x H)
3.08 in x 3.57 in x 3.25 in
Package Dimensions (L x W x H)
78.232 mm x 90.678 mm x 82.55 mm
Package Weight (Imperial)
1.100 lb
Package Weight (Metric)
0.499 kg
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MPDB66002

Open-Style PDB UL 1953 1000V Tin-plated Copper - 310A 2-Pole 1 - 1 openings; 350-#6 --- 350-#6 Box to Box
S3-M2 POWER INFEED BLOCK

MS325-BB1

S3-M2 POWER INFEED BLOCK
Power Distribution Block (1) 350 MCM-6 AWG Primary (12) 4-14 AWG Secondary Power Distribution Blocks are made of high strength, high-conductivity aluminum alloy and are mounted in a high-strength glass-filled polyester base. Each block can stand alone or combine with other blocks to form a multi-block set.

AM-P1-H12

Power Distribution Block (1) 350 MCM-6 AWG Primary (12) 4-14 AWG Secondary Power Distribution Blocks are made of high strength, high-conductivity aluminum alloy and are mounted in a high-strength glass-filled polyester base. Each block can stand alone or combine with other blocks to form a multi-block set.
CONNECTOR FOR DISTRIBUTION BLOCK UNIPOLAIRE 250 A

54100025

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Splitter Blocks 225 A

CSBL225

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Splitter Box Block Assembly, 225 amps, Brushed, Aluminum

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Open-Style PDB UL 1953 1000V 250A Tin-plated Aluminum - 310A 2-Pole 1 - 15 openings; 350-#6 --- #10-#14 Box to Box

MPDB67622

Open-Style PDB UL 1953 1000V 250A Tin-plated Aluminum - 310A 2-Pole 1 - 15 openings; 350-#6 --- #10-#14 Box to Box
Open-Style PDB UL 1953 1000V 500A Tin-plated Aluminum - 620A Adder 2 - 6 openings; 350-#6 --- 2/0-#14 Box to Box

MPDB69130

Open-Style PDB UL 1953 1000V 500A Tin-plated Aluminum - 620A Adder 2 - 6 openings; 350-#6 --- 2/0-#14 Box to Box

Frequently Asked Questions

What are the voltage and current ratings for Mersen power distribution blocks?

These blocks are rated for 1000VAC/DC and can handle amperages from 65 to 2260A, based on NEC table 310.15(B)(16) 75ºC ampacities.

What types of wire connectors are available for these blocks?

Standard aluminum and copper wire connectors are available. Aluminum connectors accept both AL or CU wire, while copper connectors accept CU wire only.

Can these blocks accept DLO-type fine-strand wire?

Yes, many part numbers are rated to accept DLO-type fine-strand wire, allowing users to connect flexible conductors.

What are the spacing requirements for feeder and branch circuits?

The blocks meet feeder and branch circuit requirements with 1 inch through air and 2 inches over surface spacing between uninsulated live parts of opposite polarity.

What material are the insulators made of and what is their dielectric strength?

Insulators are made of virtually unbreakable, glass-filled polycarbonate with a dielectric strength in excess of 2500V.

What is the flammability rating of the insulating material?

The insulating material has a flammability rating of UL94-V0.

Frequently Asked Questions about Mersen

What industries and applications are Mersen products used for?

Mersen products are used across diverse industrial sectors including solar power, electric vehicles, buildings/construction, industrial automation, power distribution, HVAC, elevators, telecommunications, and specialty manufacturing. Key application areas include circuit protection, surge protection, battery module protection, electrical safety systems, and power management for residential, commercial, and utility-scale installations.

What are the main product lines offered by Mersen?

Mersen offers five primary electrical power product lines: IEC and UL/CSA Fuses and Fusegear, Surge Protection, Low Voltage Disconnect Switches, Power Distribution Blocks, and Engineered Solutions. Their comprehensive range includes specialized components like high-speed fuses, modular fuse holders, surge arresters, and custom-engineered electrical protection systems for industrial and power management applications.

What are the key features of Mersen products?

Mersen products feature advanced electrical protection and power management solutions with key characteristics including finger-safe design, compact modularity, and high-performance safety features. Their product lines span electrical power components like fuses, surge protection, power distribution blocks, and specialized solutions for industrial, solar, and building applications. Critical features include UL/CSA approvals, high short-circuit current ratings, and innovative technologies like the Fuse Control™ program that minimize electrical risks and optimize system performance.

What environmental ratings do Mersen products have?

Mersen products meet rigorous environmental ratings across multiple standards, including UL 508A Type 1, 2, 3, 4, 4X, 12, and 13, CSA Type 1, 2, 3, 4, 4X, 12, and 13, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13. They feature IEC 60529 IP66 protection, with enhanced UV inhibitors for outdoor weathering and operating temperatures ranging from -40°C to 130°C (-40°F to 266°F). These ratings ensure superior protection in wet, corrosive, and challenging industrial environments.

What accessories are available for Mersen products?

Mersen offers multiple accessories for their fuse blocks and systems, including safety pullers (DFC3M and DFC3LP), DIN-rail adapters (DRM), bus bars, auxiliary contacts, and specialized mounting hardware. Key accessories include the DFC3M safety puller for 1-1/2" x 13/32" midget or Class CC fuses, the DRM adapter for mounting 303 series fuse blocks on DIN-rail, and UltraSafe fuse module accessories like bus bars and auxiliary contacts that enable module interconnection and monitoring.

How are Mersen products typically installed?

Mersen products are typically installed in electrical distribution systems, control panels, and industrial automation environments using multiple mounting options. These include service entrance panel mounting, distribution panel installation, control panel DIN rail mounting, and custom engineered solutions like Fused Coordination Panelboards. Installation depends on the specific product type, such as fuses, surge protective devices, or switches, and is designed to provide electrical protection and circuit safety in various industrial and commercial applications.

What certifications and standards do Mersen products comply with?

Mersen products are certified to multiple international standards, including UL (Underwriters Laboratories), CSA (Canadian Standards Association), CCC (China Compulsory Certification), and EAC (Eurasian Conformity). Our products meet rigorous safety and performance standards for industrial applications across North America, China, Russia, and other global markets, ensuring compliance and reliability in electrical power and advanced materials solutions.

What technical support does Mersen offer?

Mersen provides comprehensive technical support through multiple channels, including technical experts located in your time zone who can assist with product selection, application guidance, and troubleshooting. Their Fuse Control™ program offers a free Fuse Inventory Audit & Analysis, and customers can access technical resources through their sales representatives and online platform ep.mersen.com.