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Mersen MPDB67021
Power Distribution Block UL 1953 1000V 350A 1-pole 2 2/0-#14 in-2 2/0-#14 out Box/Box
Product Description
The Power Distribution Block (PDB) complies with UL 1953 standards and is engineered for safe cable splicing, effectively distributing primary power into secondary circuits. It meets the spacing requirements as outlined in UL508A and the National Electrical Code®.
This model supports primary inputs with up to 30 secondary outputs, and it is available in both aluminum and copper configurations. The block allows for the addition of optional adder poles, facilitating customization of wire combinations for increased flexibility without the need for tools.
Constructed with virtually unbreakable glass-filled polycarbonate insulators, the block provides enhanced safety and shock resistance, particularly with the optional hinged safety covers that can be installed effortlessly. The rated voltage for both AC and DC applications is 1000V, accommodating a maximum temperature of 80 °C.
In terms of short circuit ratings, this block is capable of handling up to 400 kA, ensuring reliability in various operational conditions. The connectors are tin-plated aluminum, supporting both solid and stranded conductors, with a torque rating of 120 for larger wire sizes.
For additional specifications, the block features a mounting method via direct screw, maintains a flammability rating of 94 V-0, and includes a test probe hole for circuit verification. The MPDB series thus offers a comprehensive solution for power distribution needs.
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Specifications
- Brand
- Mersen
- 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.
- Max Operating Temp
- 80 °C
Documents
Data Sheet
Datasheet for Mersen MPDB67021, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.

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