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Mersen MPDB900071 - Open-Style PDB UL 1953 1000V 1240A Tin-plated Aluminum - 1520A 1-Pole 4 - 4 openings; 500-#4 --- 500-#4 Box to Box
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Mersen MPDB900071 Open-Style PDB UL 1953 1000V 1240A Tin-plated Aluminum - 1520A 1-Pole 4 - 4 openings…

Alternate Item Number: MPDB900071

UPC: 782001456245


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Contact for Pricing

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

Overview

The Mersen MPDB900071 is a large-format, open-style Power Distribution Block (PDB) engineered for high-current, high-voltage industrial applications. Rated at 1000V and 1240A continuous current, this UL 1953-listed PDB is constructed from tin-plated aluminum for superior corrosion resistance and electrical conductivity. Designed for fixed junction tap-off points, the MPDB900071 supports 1-pole configurations with 4 primary inputs and 4 secondary outputs, all rated for 500 kcmil (#4 AWG) conductors. The block’s open-style design ensures compliance with UL508A spacing requirements for feeder and branch circuits per the National Electrical Code®, making it ideal for panelboards, switchgear, and distribution boards in commercial and industrial installations. As part of Mersen’s MPDB68 series, this PDB is optimized for large-scale power distribution where reliability and safety are critical. The tin-plated aluminum construction minimizes oxidation, while the UL and CSA certifications guarantee adherence to North American electrical standards. With a current rating of 1240A and a maximum secondary output of 1520A, the MPDB900071 is suitable for splitting primary power into secondary circuits or splicing cables in high-demand environments. The box-to-box connection type simplifies integration into existing systems, reducing installation time and complexity. Mersen’s PDBs are trusted in applications ranging from manufacturing plants to renewable energy systems, where durable, code-compliant power distribution is essential.
  • UL 1953 and CSA certified for North American electrical standards
  • 1000V voltage rating with 1240A continuous current capacity
  • Tin-plated aluminum construction for corrosion resistance and conductivity
  • 1-pole configuration with 4 primary and 4 secondary 500 kcmil (#4 AWG) openings
  • Open-style design meets UL508A and NEC spacing requirements

Specifications

Amperage Rating
1520 A
Ampere Rating (AL)
1240 A
Ampere Rating (CU)
1520 A
Application
Splicing cables Splitting primary power into secondary circuits Fixed junction tap-off points.
Brand Name
Mersen
Connection
Box To Box
Connector Type (Primary)
Box
Connector Type (Secondary)
Box
Material
Tin-plated Aluminum
Mounting
Direct Screw Mount
Mounting
Screw
Number Of Terminals
1
Size
5.7 x 5.31 x 3.55 in
Size
144.78 x 134.874 x 90.17 mm
Size
5.7 x 5.31 x 3.55;144.78 x 134.874 x 90.17 in;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
Voltage Rating
1000 V V
Wire Range (Primary)
500-#4
Wire Range (Secondary)
500-#4
Package Dimensions (L x W x H)
5.7 in x 5.31 in x 3.55 in
Package Dimensions (L x W x H)
144.78 mm x 134.874 mm x 90.17 mm
Package Weight (Imperial)
3.700 lb
Package Weight (Metric)
1.678 kg
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Frequently Asked Questions

What are the voltage and current ratings for MPDB blocks?

MPDB blocks have a voltage rating of 1000VAC/DC and an ampere rating from 65 to 2260A.

What are the available series for the MPDB line?

The MPDB series includes miniature, intermediate, and large size categories, as well as double-wide and triple-wide options.

How are MPDB blocks mounted?

MPDB blocks are designed for direct panel mounting.

Are Mersen power distribution blocks RoHS compliant?

Yes, the MPDB series is RoHS compliant and Lead Free.

What are the wire range capabilities for the MPDB900071?

The MPDB900071 has a line side wire range of 500-4 and a load side wire range of 500-4, with 4 openings per pole.

What are the amp ratings for the MPDB900071?

The MPDB900071 has an amp rating of 1520A for copper wire and 1240A for aluminum wire per pole.

What wire types are compatible with Mersen power distribution blocks?

Aluminum connectors accept both AL or CU wire, while copper connectors accept CU wire only. Some models accept DLO-type fine-strand wire.

Can I add more poles to an existing MPDB unit?

Yes, optional adder poles can be field-installed without tools to form multi-pole units and customize configurations.

What is the insulating material used in MPDB blocks?

The insulating material is glass-filled polycarbonate with a dielectric strength exceeding 2500V and a flammability rating of UL94-V0.

What is the purpose of the double-wide MPDB series?

The double-wide MPDB series is designed for custom applications requiring large ampacities and are Mersen self-certified.

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.