Mersen MPDB67623 Open-Style Po...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$499.80
Mersen MPDB67623 Open-Style Power Distribution Block, 1000V 3-Pole

Mersen MPDB67623 Open-Style Power Distribution Block, 1000V 3-Pole

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Model: MPDB67623

In Stock (leaves warehouse same day if ordered before 3pm ET)

$499.80
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Mersen MPDB67623 Open-Style Power Distribution Block, 1000V 3-Pole

The Mersen MPDB67623 Open-Style Power Distribution Block delivers reliable, code-compliant electrical distribution rated 1000V AC/DC with dual amperage capacity of 250A for aluminum conductors and 310A for copper conductors. This UL 1953 certified 3-pole distribution block features tin-plated aluminum connectors and a glass filled polycarbonate body, making it well suited for high-current professional electrical installations that demand robust, long-term performance.

Key Features

  • Dual Amperage Rating: 250A aluminum / 310A copper capacity provides flexibility for different conductor types and installation requirements.
  • 1000V AC/DC Rating: High voltage capability supports demanding power distribution applications with reliable performance.
  • 3-Pole Configuration: Direct screw mount, open-style design simplifies installation in panels and enclosures.
  • Tin-Plated Aluminum Connectors: Corrosion-resistant box-type connectors ensure long-term reliability and optimal electrical conductivity.
  • Glass Filled Polycarbonate Body: Superior insulating material provides excellent electrical isolation and mechanical durability.
  • Wire Range Support: Primary connections accommodate 350-#6 AWG at 275 in-lb torque; secondary connections support #10-#14 AWG at 15 in-lb torque.
  • 100 kA Short Circuit Rating: High fault current capability across Class CC, G, J, L, RK1, RK5, and T fuse classes ensures safe operation under extreme conditions; 10 kA standalone rating.

Certifications & Compliance

  • UL 1953 Certified
  • RoHS Compliant

Technical Specifications

  • Connector Type Primary: Box
  • Connector Type Secondary: Box
  • Number Of Openings Per Pole Primary: 1
  • Number Of Openings Per Pole Secondary: 15
  • Rohs Compliant: Yes

Typical Applications

  • Industrial Power Distribution Systems
  • Commercial Electrical Panels
  • Manufacturing Facility Distribution
  • Data Center Power Infrastructure
  • Healthcare Facility Electrical Systems
  • Multi-Tenant Building Electrical Systems

Why Mersen?

Mersen power distribution blocks combine UL 1953 certification with RoHS compliance and robust construction materials, including glass filled polycarbonate insulation and tin-plated aluminum connectors. The comprehensive 100 kA short circuit ratings across multiple fuse classes, paired with dual amperage capacity for aluminum and copper conductors, reflect Mersen's commitment to professional-grade electrical distribution solutions for demanding installations.

Manufacturer Resources

Mersen Product Catalog

Product Specs

AC or DC:
AC/DC
Ampere Rating Al:
250 A
Ampere Rating Cu:
310 A
Body/Insulating Material:
Glass Filled Polycarbonate
Connector Material:
Tin-plated Aluminum
Connector Type (Primary):
Box
Connector Type Secondary:
Box
Frequency (Hz):
50/60 Hz
Hex Screw Size Type Primary:
11/16-16 x .88
Hex Screw Size Type Secondary:
8-32 (.164) x .25
Hole Diameter Primary:
0.75 in
Hole Diameter Secondary:
0.14 in
Installation Mounting:
Direct Screw Mount
Number Of Openings Per Pole Primary:
1
Number Of Openings Per Pole Secondary:
15
Number Of Poles:
3-Pole
Product Height:
3.25 in
Product Length:
3.08 in
Product Weight:
1.6 lb
Product Width:
5.28 in
Rated voltage AC UL:
1000 V
Rated voltage DC UL:
1000 V
Rohs Compliant:
Yes
Short Circuit Rating (Class CC):
100 kA with 30A Fuse
Short Circuit Rating (Class G):
100 kA with 60A Fuse
Short Circuit Rating Class J:
100 kA with 400A Fuse
Short Circuit Rating Class L:
100 kA with 400A Fuse
Short Circuit Rating Class Rk1:
100 kA with 200A Fuse
Short Circuit Rating Class Rk5:
100 kA with 100A Fuse
Short Circuit Rating Class T:
100 kA with 400A Fuse
Short Circuit Rating (Standalone):
10 kA
Torque Rating Primary:
350-#6 275
Torque Rating Secondary:
#10-#14 15
Wire Range Primary:
350-#6
Wire Range Secondary:
#10-#14
Department:
Electrical
Product Group:
Power Distribution
Product Type:
Power Distribution Block
Product Subgroup:
Power Distribution Blocks

Mersen MPDB67623 – Frequently Asked Questions

1) What wire sizes will the Mersen MPDB67623 distribution block accept on the line and load sides?
The line (primary) side takes one conductor per pole, 350 kcmil down to #6 AWG, torqued to 275 in-lb. Each load (secondary) pole has 15 openings sized for #10 to #14 AWG at 15 in-lb. So it is built to break a single large feeder into many small branch taps, not to land several large load cables.
2) Can I use the MPDB67623 on a 1000V DC solar or battery circuit?
Yes. The MPDB67623 is UL rated at 1000 V on both AC and DC, and carries a 50/60 Hz AC rating, so it is suitable for 1000V DC strings as well as AC feeders.
3) Is the 250A or the 310A rating the one I should design to?
It depends on your conductor. With aluminum conductors the Mersen MPDB67623 is rated 250 A; with copper it is 310 A. The connectors themselves are tin-plated aluminum, which is what allows both AL and CU terminations.
4) What short circuit current rating can I put on the panel label with this block?
Standalone, the MPDB67623 is rated 10 kA. Protected by an upstream fuse it goes to 100 kA: Class CC with a 30A fuse, Class G with 60A, Class RK5 with 100A, Class RK1 with 200A, and Class J, L, or T with a 400A fuse. The SCCR you can claim is tied to the fuse class and amp rating actually installed ahead of it.
5) How much space do I need in the enclosure for the Mersen MPDB67623, and how does it mount?
Plan for a footprint of 5.28 in wide, 3.08 in long, and 3.25 in high, at 1.6 lb. It is a direct screw mount, open-style block, so it fastens straight to the panel back-pan or subplate rather than clipping to DIN rail. Being open style, it has no finger-safe cover, so allow for required clearances in the enclosure.
6) Is this block suitable for a 3-phase feeder tap, or do I need a separate neutral block?
The MPDB67623 is a 3-pole block, so it covers three phase conductors only. A neutral or ground run needs its own separately mounted block or bar.
7) Will a replacement 3-pole block fit the same footprint as the Mersen MPDB67623 in my existing panel?
Check the footprint before you order. The MPDB67623 measures 5.28 in wide by 3.08 in long by 3.25 in high and weighs 1.6 lb, and it lands on the panel by direct screw mount, so the replacement needs both the space and matching mounting hole locations. The Square D Linergy 9080LB is a 3-pole block in the same role, but dimensions differ by catalog number within that series, so measure against the 5.28 by 3.08 by 3.25 in envelope and the existing screw pattern rather than substituting on pole count alone.
8) What is the insulation made of, and will it hold up in a hot industrial panel?
The body is glass filled polycarbonate, chosen for dielectric isolation plus mechanical strength, and the connectors are tin-plated aluminum for corrosion resistance. The assembly is UL 1953 certified and RoHS compliant.
How fast can I get the Mersen MPDB67623 delivered?
Most orders ship the same day from our distribution partners, with quick delivery throughout the continental U.S. Need it urgently? Contact Us for expedited shipping options.
Can I return it if it doesn’t work for me?
Yes—ZenSupply offers a hassle-free return policy. If the product isn’t the right fit, reach out to our support team for a return authorization or setup a return by following our return instructions.
Does the Mersen MPDB67623 come with a warranty?
Absolutely. The Mersen MPDB67623 is backed by a manufacturer’s warranty. For full warranty terms, check the product documentation or Contact Us.
How do I get technical support or installation help for the Mersen MPDB67623?
You can call, text, or email our expert support team for fast answers. We’re here to help with product selection, installation tips, and troubleshooting. Contact Us
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