Mersen MPDB66233 Open-Style PDB UL 1953 1000V Tin-plated Copper - 400A 3-Pole 1 - 2 openings; 3/8-16 x…
Alternate Item Number: MPDB66233
UPC: 782001453671
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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
- UL 1953 Certified Open-Style Power Distribution Block
- Rated for 1000V and 400A
- 3-Pole Configuration
- Tin-Plated Copper Construction
- Stud-to-Stud Connections (3/8-16 x 1-1/8 to 1/4-20 x 1-1/8)
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 |
Connection Type | Stud-to-Stud |
Connection Type | Stud to Stud (3/8-16 x 1-1/8 --- 1/4-20 x 1-1/8) |
Connection Type | Stud to Stud |
Connector Type (Primary) | Stud |
Connector Type (Secondary) | Stud |
Current Rating | 400 A |
Material | Tin-plated Copper |
Material | Copper |
Mounting | Direct Screw Mount |
Mounting Type | Open-style |
Number Of Terminals | 3-pole |
Poles | 3 |
Poles | 3-pole |
Series | MPDB |
Size | 1-2 openings; 3/8-16 x 1-1/8 --- 1/4-20 x 1-1/8 Stud to Stud |
Size | 3/8-16 x 1-1/8 to 1/4-20 x 1-1/8 |
Size | 1-2 openings |
Size | Intermediate (MPDB66 and MPDB67 series) |
Size | 3.08 x 5.28 x 3.25 in |
Size | 78.232 x 134.112 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) | 1/4-20 x 1-1/8 |
Package Dimensions (L x W x H) | 3.08 in x 5.28 in x 3.25 in |
Package Dimensions (L x W x H) | 78.232 mm x 134.112 mm x 82.55 mm |
Package Weight (Imperial) | 3.400 lb |
Package Weight (Metric) | 1.542 kg |
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Open-Style PDB UL 1953 1000V Tin-plated Copper - 620A Adder 2 - 4 openings; 350-#6 --- 4/0-#10 Box to BoxFrequently Asked Questions
What are the voltage and current ratings for MPDB series blocks?
MPDB series blocks are rated for 1000VAC/DC and have ampere ratings from 65 to 2260A.
What wire types are compatible with copper and aluminum connectors?
Copper connectors accept CU wire only, while aluminum connectors accept both AL and CU wire. Many are rated for DLO-type fine-strand wire.
What are the spacing requirements for feeder and branch circuits?
The blocks meet UL508A requirements with 1 inch through air and 2 inches over surface spacing between live parts of opposite polarity.
What is the flammability rating of the insulating material?
The insulating material, glass-filled polycarbonate, has a flammability rating of UL94-V0.
What are the available configurations for MPDB blocks?
MPDB blocks are available in single, dual, and triple pole configurations, with specialty blocks supporting up to 7 primary inputs.
Can additional poles be added to MPDB blocks in the field?
Yes, optional adder poles can be stacked to form multi-pole units in the field without tools for increased flexibility.
What are the mounting options for MPDB series blocks?
MPDB series blocks are designed for direct panel mounting.
Are safety covers and end barriers available for MPDB blocks?
Yes, optional snap-on, hinged safety covers and end barriers are available for various MPDB series.
What is the dielectric strength of the insulating material?
The glass-filled polycarbonate insulating material has a verified dielectric strength exceeding 2500V.
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.