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Mersen MPDB68090 - Open-Style PDB UL 1953 1000V Tin-plated Copper - 760A Adder 2 - 2 openings; 500-#4 --- 500-#4 Box to Box
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Mersen MPDB68090 Open-Style PDB UL 1953 1000V Tin-plated Copper - 760A Adder 2 - 2 openings; 500-#4…

Alternate Item Number: MPDB68090

UPC: 782001453114


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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 MPDB68090 is a high-current open-style power distribution block engineered for 1000V applications requiring reliable, high-ampacity connections. This UL 1953 certified block features tin-plated copper construction for superior electrical conductivity and corrosion resistance, rated for 760A continuous current per pole. Designed for box-to-box configurations, it supports two primary inputs (500-#4 AWG) and two secondary outputs (500-#4 AWG), making it ideal for splitting primary power into secondary circuits or fixed junction tap-off points in feeder and branch circuits. Compliance with UL 508A and NEC spacing requirements ensures safe operation in industrial environments. Part of Mersen’s MPDB68/69 series, this block is manufactured in Germany and offers field-installable adder poles for multi-pole configurations. Primary inputs accept single or dual conductors, while secondary outputs support up to 30 connections per block. Specialty configurations allow up to 7 primary inputs for complex distribution needs. The tin-plated copper material provides excellent thermal and mechanical withstand ratings, while phenolic resin models are available for basic applications and fiber-glass polyester models for corrosive atmospheres. SCCR ratings reach 100kA with properly sized fuses, as detailed in Mersen’s PDB SCCR guide. Voltage ratings extend to 1500V and 2500V in dielectric withstand tests, ensuring versatility across applications.
  • UL 1953 and UL 508A certified for 1000V applications
  • Tin-plated copper construction rated for 760A continuous current
  • Box-to-box configuration with 500-#4 AWG wire range
  • Supports field-installable adder poles for multi-pole configurations
  • SCCR rating of 100kA with properly sized fuses

Specifications

Amperage Rating
760 A
Ampere Rating (CU)
760 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
760A
Material
Tin-Plated Copper
Mounting
Direct Screw Mount
Number Of Terminals
1
Series
MPDB
Series
MPDB68/69
Size
5.7 x 2.58 x 3.55 in
Size
144.78 x 65.532 x 90.17 mm
Size
Large (MPDB68 and MPDB69 series)
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)
500-#4
Package Dimensions (L x W x H)
5.7 in x 2.58 in x 3.55 in
Package Dimensions (L x W x H)
144.78 mm x 65.532 mm x 90.17 mm
Package Weight (Imperial)
3.500 lb
Package Weight (Metric)
1.588 kg
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100kA Short Circuit Current Rated Power Distribution Block. 2 x 500 MCM-4 AWG Line, 6 x 2/0-14 AWG Load Power Distribution Blocks are made of Valox Nylon 6/6, Finger Safe Lexan 500R Polycarbonate Panels and Covers, high-conductivity 6061-T6 Electro-Tin Plated aluminum alloy connector. Each block can stand alone or combine with other blocks to form a multi-block set, and are also Din Rail Mountable with built in locking mechanism to lock/release.
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Frequently Asked Questions

Are Mersen MPDB blocks UL and CSA approved?

Unless noted otherwise, all blocks are UL and CSA approved and meet spacing requirements for feeder and branch circuits.

What types of wire connectors are available for MPDB blocks?

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

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

Yes, many part numbers are rated to accept DLO-type fine-strand wire, allowing for connection of flexible conductors.

What material are the insulators made of?

The insulators are made of virtually unbreakable, glass-filled polycarbonate with a dielectric strength exceeding 2500V.

Are safety covers available for MPDB blocks?

Yes, optional, snap-on, hinged safety covers made of polycarbonate are available for added safety and shock resistance.

Can additional poles be added to MPDB blocks in the field?

Yes, optional adder poles can be stacked in the field without tools to form multi-pole units and customize wire combinations.

What is the flammability rating of the insulating material?

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

How are MPDB blocks mounted?

MPDB blocks are designed for direct panel mounting.

Are the MPDB blocks RoHS compliant?

Yes, the MPDB blocks are RoHS compliant and Lead Free.

What is the voltage rating for Mersen MPDB power distribution blocks?

The Mersen MPDB series power distribution blocks have a voltage rating of 1000VAC/DC.

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.