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Mersen MPDB68291 - Open-Style PDB UL 1953 1000V Tin-plated Copper - 1000A 1-Pole 1 - 12 openings; 1/2-13 x 1-3/8 --- #4-#14 Stud to Box
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Mersen MPDB68291 Open-Style PDB UL 1953 1000V Tin-plated Copper - 1000A 1-Pole 1 - 12 openings; 1/2-13 x…

Alternate Item Number: MPDB68291

UPC: 782001455729


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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 MPDB68291 is an open-style Power Distribution Block (PDB) designed for robust power management in industrial applications. This next-generation PDB, part of Mersen's MPDB68 series, offers a reliable and straightforward method for splicing cables, splitting primary power into secondary circuits, and establishing fixed junction tap-off points. It is UL 1953 approved and meets stringent spacing requirements for feeder and branch circuits in conjunction with UL508A and the National Electrical Code®. Key specifications include a maximum operating voltage of 1000V and a substantial current rating of 1000A. The block features a single-pole configuration and is constructed with tin-plated copper for excellent conductivity and durability. It provides one primary input and accommodates up to 12 secondary openings. The terminal configuration includes #4-#14 AWG wire range for stud-to-box connections, with 1/2-13 x 1-3/8 studs for primary connections. Mersen power distribution blocks are recognized for their safety and ease of use. The MPDB series is available in miniature, intermediate, and large size categories, with options for both aluminum and copper construction. This specific model, MPDB68291, falls into the large size category, ensuring ample capacity for demanding power distribution needs. Its German origin (DE) signifies adherence to high manufacturing standards.
  • 1000V maximum operating voltage
  • 1000A current rating
  • Tin-plated copper construction
  • 1-Pole configuration with 12 secondary openings
  • UL 1953 approved for industrial applications

Specifications

Amperage Rating
1000 A
Ampere Rating (CU)
1000 A
Application
Splicing cables Splitting primary power into secondary circuits Fixed junction tap-off points.
Brand Name
Mersen
Connection
Box To Stud
Connector Type (Primary)
Stud
Connector Type (Secondary)
Box
Material
Tin-plated Copper
Mounting
Direct Screw Mount
Number Of Terminals
1
Size
5.7 x 2.73 x 3.55 in
Size
144.78 x 69.342 x 90.17 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)
1/2-13 x 1-3/8
Wire Range (Secondary)
#4-#14
Package Dimensions (L x W x H)
5.7 in x 2.73 in x 3.55 in
Package Dimensions (L x W x H)
144.78 mm x 69.342 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 Mersen power distribution blocks?

The blocks are rated for 1000VAC/DC and have ampere ratings from 65 to 2260A, based on NEC table 310.15(B)(16) 75ºC ampacities.

Are there options for increasing the number of poles?

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

Are safety covers available for Mersen power distribution blocks?

Yes, optional, snap-on, hinged safety covers made of polycarbonate are available for dead-front protection.

What material are the insulators made of?

The insulators are made of virtually unbreakable, glass-filled polycarbonate.

What is the flammability rating of the insulating material?

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

What approvals do Mersen power distribution blocks have?

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

How are Mersen power distribution blocks mounted?

The blocks are designed for direct panel mounting.

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 types of wire connectors are available for these blocks?

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

What is the SCCR rating for these blocks?

The SCCR is 100kA when used with a properly sized fuse.

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.