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Mersen MPDB66203
UL 1953 Power Distribution Block 1000V 155A 3-Pole
Product Description
The UL 1953 Power Distribution Block is designed for safe and efficient cable splicing and power distribution. With a maximum rated voltage of 1000V and an ampere rating of 155A, this 3-pole block accommodates 1 opening per pole for both primary and secondary connections using a stud type. Its body is constructed from glass-filled polycarbonate, ensuring durability and resistance to impact.
This model meets stringent requirements as outlined in UL508A and is compliant with the National Electrical Code®. It supports various wire types, including solid and stranded copper, with connectors that are tin-plated to enhance conductivity. The block can be mounted directly via screws, facilitating straightforward installation.
Furthermore, the block's design incorporates optional adder poles, allowing customization of primary and secondary wire configurations in the field without the need for tools. Safety covers made from polycarbonate provide dead-front protection, and the block is rated for a maximum operating temperature of 80°C and a minimum storage temperature of -25°C.
For applications requiring flexibility, it offers multiple short circuit ratings, such as 10 kA standalone and up to 400 kA for specific classes, ensuring reliability in various electrical environments. The MPDB series, of which this block is a part, is recognized for meeting professional standards while offering the flexibility needed for modern installations.
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Offer details
- Offer from:
Trusted supplier — Italy, member since 2021, 10–19 employees
- Availability:
- On requestLead time to be confirmed
- Warranty:
- 12 months
- Condition:
- New Factory Sealed
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
Available Offers
(1)| Condition | Availability | Supplier | Warranty | Action | |
|---|---|---|---|---|---|
| Condition New Factory Sealed | Availability On requestLead time to be confirmed | Supplier | Warranty 12 months |
Offer with manufacturer lead time
Directly from the manufacturer - with a confirmed, predictable, and fully transparent delivery time.
Documents
Data Sheet
Datasheet for Mersen MPDB66203, including specifications and features.
CAD Models
3D CAD model and technical drawings, ready for your design software.
Product data updated: 19-09-2026

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