Mersen MPDB66260 Open-Style PDB UL 1953 1000V Tin-plated Copper - 400A Adder 1 - 1 openings; 3/8-16 x…
Alternate Item Number: MPDB66260
UPC: 782001451455
Contact for Pricing
Call +1 (262) 252-1600 (toll-free 877-268-3700) or email [email protected] for pricing and availability.
Overview
- UL 1953 and CSA certified for safety and compliance
- 1000V voltage rating with 400A continuous current capacity
- Tin-plated copper construction for corrosion resistance and conductivity
- Intermediate size with 1 primary and 1 secondary stud-to-stud connection (3/8-16 x 1-1/8)
- Meets UL508A and NEC spacing requirements for feeder and branch circuits
Specifications
Amperage Rating | 400 A |
Ampere Rating (CU) | 400 A |
Application | Splicing cables Splitting primary power into secondary circuits Fixed junction tap-off points. |
Brand Name | Mersen |
Connection | Stud To Stud |
Connector Type (Primary) | Stud |
Connector Type (Secondary) | Stud |
Material | Tin-Plated Copper |
Mounting | Direct Screw Mount |
Number Of Terminals | 1 |
Size | 3.08 x 1.72 x 3.25 in |
Size | 78.232 x 43.688 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) | 3/8-16 x 1-1/8 |
Wire Range (Secondary) | 3/8-16 x 1-1/8 |
Package Dimensions (L x W x H) | 3.08 in x 1.72 in x 3.25 in |
Package Dimensions (L x W x H) | 78.232 mm x 43.688 mm x 82.55 mm |
Package Weight (Imperial) | 1.100 lb |
Package Weight (Metric) | 0.499 kg |
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What are the voltage and current ratings for Mersen MPDB blocks?
Mersen MPDB blocks are rated for 1000VAC/DC and have ampere ratings from 65 to 2260A, based on NEC table 310.15(B)(16) 75ºC ampacities.
Can Mersen MPDB blocks be customized with additional poles?
Yes, optional adder poles can be field-installed without tools to create multi-pole units, allowing for customized primary and secondary wire combinations.
How are Mersen MPDB blocks mounted?
Mersen MPDB blocks are designed for direct panel mounting.
What is the purpose of Mersen power distribution blocks?
They provide a safe and easy method for splicing cables, splitting primary power into secondary circuits, and creating fixed junction tap-off points.
What are the different series of Mersen MPDB blocks?
The MPDB series includes miniature (MPDB62/63), intermediate (MPDB66/67), and large (MPDB68/69) size categories, available in aluminum and copper.
What wire types are compatible with Mersen MPDB blocks?
Copper blocks accept solid or stranded CU wire (60/75ºC), while aluminum blocks accept solid or stranded AL and CU wire (60/75/90ºC). Some models accept DLO-type fine-strand wire.
What is the insulating material used in Mersen MPDB blocks?
The insulators are made of glass-filled polycarbonate, offering a dielectric strength exceeding 2500V and meeting UL94-V0 flammability standards.
Are there safety covers available for Mersen MPDB blocks?
Yes, optional, snap-on, hinged safety covers made of polycarbonate are available for dead-front protection and shock resistance. They include a test probe hole.
What approvals do Mersen MPDB blocks have?
Most MPDB blocks are UL Listed (File E352417) and CSA Certified (Class 6228 01), meeting requirements for feeder and branch circuits.
Are double-wide MPDB blocks UL or CSA certified?
Double-wide MPDB series blocks are generally not UL or CSA certified unless otherwise noted; they are Mersen self-certified and approved.
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.