Mersen MPDB63163 Open-Style Po...
IN STOCK (leaves warehouse same day if ordered before 3pm ET)
$197.87
$119.71
Mersen MPDB63163 Open-Style Power Distribution Block, 1000V 85A 3-Pole

Mersen MPDB63163 Open-Style Power Distribution Block, 1000V 85A 3-Pole

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Model: MPDB63163

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

$197.87
$119.71
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Mersen MPDB63163 Open-Style Power Distribution Block, 1000V 85A 3-Pole

The Mersen MPDB63163 is an open-style power distribution block engineered for reliable electrical distribution in industrial and commercial power systems. This 3-Pole block is UL 1953 certified for 1000V AC/DC applications, delivering an 85A copper / 65A aluminum ampere rating through tin-plated aluminum connectors housed in a glass filled polycarbonate body. With a #4-#14 wire range, box-to-box connectivity, and direct screw mounting, it supports versatile installation in control panels, switchgear, and panelboard applications where dependable high-current connections are critical.

Key Features

  • 1000V AC/DC Rating: UL-rated for 1000V AC and DC, supporting high-voltage industrial and commercial power distribution.
  • 85A Copper / 65A Aluminum Capacity: Dual ampere ratings accommodate copper or aluminum conductors within safe operating limits.
  • Tin-Plated Aluminum Connectors: Corrosion-resistant box-type connectors on both primary and secondary sides for long-term conductivity.
  • Glass Filled Polycarbonate Housing: Durable insulating body material provides mechanical strength and electrical insulation.
  • 3-Pole Configuration: Three-pole design with 1 opening per pole on the primary side and 4 openings per pole on the secondary side.
  • Flexible Wire Range #4-#14: Accepts a wide range of conductor sizes on both primary and secondary connections, torqued per Mersen's specified values.
  • 100 kA Short Circuit Rating: High fault-current capability of 100 kA when protected with appropriate Class CC, G, J, L, RK1, RK5, or T fuses (10 kA standalone).
  • Direct Screw Mount Installation: Simplifies mounting directly into control panels and enclosures using 1/4-28 x .38 hex screws.

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: 4
  • Rohs Compliant: Yes

Typical Applications

  • Industrial Control Panels and Motor Control Centers
  • Commercial Power Distribution Systems
  • Manufacturing Equipment Power Distribution
  • Electrical Switchgear and Panel Board Applications
  • Process Control and Automation Systems
  • High-Voltage DC Power Distribution

Why Mersen?

Mersen power distribution blocks pair UL 1953 certification with RoHS compliance and a durable glass filled polycarbonate housing for dependable performance in demanding electrical environments. Tin-plated aluminum connectors and short circuit ratings verified across multiple fuse classes give electrical professionals a distribution block built for safe, code-compliant installations in industrial and commercial power systems.

Manufacturer Resources

Product Specs

Ac Or Dc:
AC/DC
Ampere Rating Al :
65 A
Ampere Rating Cu :
85 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 :
1/4-28 x .38
Hex Screw Size Type Secondary :
1/4-28 x .38
Hole Diameter Primary :
0.25 in
Hole Diameter Secondary :
0.25 in
Installation Mounting:
Direct Screw Mount
Number Of Openings Per Pole Primary :
1
Number Of Openings Per Pole Secondary :
4
Number Of Poles:
3-Pole
Product Height:
2.81 in
Product Length:
3.08 in
Product Weight:
0.56 lb
Product Width:
2.91 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 100A Fuse
Short Circuit Rating Class L :
100 kA with 100A Fuse
Short Circuit Rating Class Rk1 :
100 kA with 60A Fuse
Short Circuit Rating Class Rk5 :
100 kA with 30A Fuse
Short Circuit Rating Class T :
100 kA with 100A Fuse
Short Circuit Rating Standalone :
10 kA
Torque Rating Primary :
#4-#6 35; #8 25; #10-#14 20
Torque Rating Secondary :
#4-#6 35; #8 25; #10-#14 20
Wire Range Primary :
#4-#14
Wire Range Secondary :
#4-#14
Department:
Electrical
Product Group:
Wiring Devices
Product Type:
Power Distribution Block

Mersen MPDB63163 – Frequently Asked Questions

1) What wire sizes will the Mersen MPDB63163 distribution block accept?
Both sides take #4 through #14 conductors. The line side has one opening per pole and the load side has four openings per pole, so a single #4 feeder can be split into up to four branch taps per phase. Ampacity limits the block to 85 A with copper and 65 A with aluminum, so size the feeder to whichever conductor material you are actually pulling.
2) Can I use this power distribution block on a 1000V DC solar or battery circuit?
Yes. The MPDB63163 is UL rated at 1000 V on both AC and DC, and the listing calls out high-voltage DC power distribution as an application. On AC it is rated for 50/60 Hz. Current ceiling is the same either way: 85 A copper, 65 A aluminum.
3) What fuse do I need ahead of this block to get the full 100 kA short circuit rating?
Standalone, the MPDB63163 is rated 10 kA. To reach 100 kA it must be protected upstream by a current-limiting fuse: Class CC or RK5 at 30 A max, Class G or RK1 at 60 A max, or Class J, L, or T at 100 A max. Anything outside those combinations drops you back to the 10 kA figure, which will not satisfy a panel with a higher available fault current.
4) What torque should I use on the terminal screws of this Mersen distribution block?
Same values on line and load sides: 35 in-lb for #4 through #6 conductors, 25 in-lb for #8, and 20 in-lb for #10 through #14. The terminals are box type with 1/4-28 x .38 hex screws and a 0.25 inch hole diameter, so a hex driver with an inch-pound torque wrench is the right tool. Aluminum conductors in particular will loosen and heat if you eyeball it.
5) Can I land aluminum conductors in this block, or is it copper only?
Aluminum is fine. The connectors are tin-plated aluminum box lugs, rated for either metal, but the ampere ceiling changes: 85 A with copper, 65 A with aluminum. So an aluminum feeder on a 75 A load will not work here even though the block's headline rating is 85 A.
6) How much panel space does the MPDB63163 need, and how does it mount?
Plan for a footprint of 3.08 x 2.91 x 2.81 inches (length, width, height) and 0.56 lb. It is a direct screw mount block, fastened straight to the panel or enclosure subplate rather than clipped to DIN rail. Because it is open style, you also need clearance around the terminals for the code-required spacing your inspector expects on a 1000 V circuit.
7) Is an open-style distribution block like this acceptable, or do I need an enclosed one?
Open style means the terminals are exposed, so the MPDB63163 has to live inside an enclosure or panel that provides the barrier: control panels, motor control centers, switchgear, and panelboards are the intended homes for it. If the block will sit anywhere a person can reach energized parts with the cover off, choose a closed or covered block instead. Insulation here is a glass filled polycarbonate body, which gives mechanical strength but no finger-safe shrouding.
8) Is the Mersen MPDB63163 UL listed and RoHS compliant for a spec job?
It is UL 1953 certified at 1000 V AC and DC, and RoHS compliant. For a submittal, those two plus the 100 kA series short circuit rating with the listed fuse classes are usually what the reviewing engineer is looking for on a distribution block.
9) How many branch circuits can I tap off one MPDB63163 per phase?
Four. Each of the three poles has a single line-side opening and four load-side openings, so one incoming conductor per phase feeds up to four outgoing taps. Total current through any pole still cannot exceed 85 A copper or 65 A aluminum, so the sum of your four branches has to sit under that.
10) I need one line in and four taps out per phase - does the Mersen MPDB63163 or the Square D Linergy 9080LB do that?
The Mersen MPDB63163 is built for exactly that splitting pattern: 1 opening per pole on the primary side and 4 openings per pole on the secondary side, across three poles. The Square D Linergy 9080LB is a 3-pole block in the 9080LB series, so confirm the opening count per pole on the specific 9080LB catalog number you are quoting, since that series covers several tap arrangements. For a 1-in / 4-out feeder tap in a control panel, the MPDB63163 matches the arrangement directly.
11) Will a Square D Linergy 9080LB drop into the same footprint as a Mersen MPDB63163?
Do not assume it will. The Mersen MPDB63163 measures 3.08 in long, 2.91 in wide and 2.81 in high and uses direct screw mounting into the panel or enclosure. The Square D Linergy 9080LB is a 3-pole block in the 9080LB series, but its mounting pattern and body dimensions are its own, and many Linergy blocks are offered with DIN rail as well as panel mounting. If you are replacing an MPDB63163 in an existing subpanel, measure the existing screw centers and the available height above the block before committing to the Square D part.
How fast can I get the Mersen MPDB63163 delivered?
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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 MPDB63163 come with a warranty?
Absolutely. The Mersen MPDB63163 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 MPDB63163?
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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