Mersen Open-Style Power Distri...
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$432.39
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Mersen Open-Style Power Distribution Block, UL 1953 1000V Tin-Plated Copper

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Model: MPDB66670

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

$432.39
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Mersen Open-Style Power Distribution Block, UL 1953 1000V Tin-Plated Copper

The Mersen Open-Style Power Distribution Block (PDB) is a next-generation adder block engineered to splice cables, split primary power into secondary circuits, and fulfill fixed junction tap-off requirements. Constructed with tin-plated copper connectors in a glass filled polycarbonate insulating body, this UL 1953 listed block is rated 1000V AC/DC and 310A, with a primary wire range of 350-#6 and a secondary wire range of #2-#14 across 1 primary opening and 4 secondary openings per pole. It meets spacing requirements for feeder and branch circuits per UL508A and the National Electrical Code®.

Key Features

  • Ampere Rating: 310A adder block rating for splitting primary power into multiple secondary circuits.
  • Voltage Rating: Rated 1000V AC and 1000V DC per UL, suitable for demanding power distribution applications.
  • Wire Range (Primary): Accepts 350-#6 conductors through a single box-type primary connector with a 0.75 in hole diameter.
  • Wire Range (Secondary): Accepts #2-#14 conductors across 4 box-type secondary openings per pole with a 0.31 in hole diameter.
  • Durable Construction: Tin-plated copper current-carrying connectors housed in a glass filled polycarbonate insulating body.
  • Short Circuit Ratings: 100 kA with Class J, T, RK1, RK5, L, and CC fuses, and 10 kA standalone, for robust fault protection.
  • Installation Mounting: Direct screw mount simplifies fixed junction tap-off installation.
  • Frequency: Rated for 50/60 Hz AC/DC operation.

Certifications & Compliance

  • UL 1953 Listed, 1000V AC/DC
  • Meets UL508A and National Electrical Code® spacing requirements
  • RoHS Compliant

Technical Specifications

  • Number of Openings per Pole (Secondary): 4
  • Number of Openings per Pole (Primary): 1
  • ROHS Compliant: Yes
  • Connector Type (Primary): Box
  • Connector Type (Secondary): Box

Typical Applications

  • Industrial and Commercial Power Distribution Panels
  • UL508A Industrial Control Panel Wiring
  • Splicing Cables and Fixed Junction Tap-Off Points
  • Splitting Primary Power into Secondary Circuits
  • Feeder and Branch Circuit Wiring per the National Electrical Code®

Why Mersen?

Mersen power distribution blocks combine tin-plated copper conductors with a glass filled polycarbonate insulating body to deliver a UL 1953 listed, 1000V, 310A-rated splicing solution built for code-compliant industrial and commercial electrical work. With short circuit ratings up to 100 kA across multiple fuse classes and RoHS compliant construction, this open-style PDB is engineered for reliable, safe performance in demanding power distribution applications.

Manufacturer Resources

Product Specs

Hex/Screw Size & Type (Secondary):
5/16-24 x .38
Hole Diameter (Secondary):
0.31 in
Torque Rating (Secondary):
#2-#3 50; #4-#6 35; #8 25; #10-#14 20
Rated voltage AC UL:
1000 V
Number of Poles:
Adder
Ampere Rating (CU):
310 A
Short Circuit Rating (Class G):
100 kA with 60A Fuse
Installation Mounting:
Direct Screw Mount
Short Circuit Rating (Class L):
100 kA with 400A Fuse
Hole Diameter (Primary):
0.75 in
Short Circuit Rating (Class T):
100 kA with 400A Fuse
Hex/Screw Size & Type (Primary):
11/16-16 x .88
Number of Openings per Pole (Secondary):
4
Short Circuit Rating (Class CC):
100 kA with 30A Fuse
Number of Openings per Pole (Primary):
1
Wire Range (Primary):
350-#6
Short Circuit Rating (Class RK5):
100 kA with 100A Fuse
ROHS Compliant:
Yes
Frequency (Hz):
50/60 Hz
Short Circuit Rating (Standalone):
10 kA
AC or DC:
AC/DC
Wire Range (Secondary):
#2-#14
Short Circuit Rating (Class J):
100 kA with 400A Fuse
Connector Type (Primary):
Box
Connector Material:
Tin-plated Copper
Rated voltage DC UL:
1000 V
Connector Type (Secondary):
Box
Short Circuit Rating (Class RK1):
100 kA with 200A Fuse
Torque Rating (Primary):
350-#6 275
Body/Insulating Material:
Glass Filled Polycarbonate
list_batch:
MERSEN-20260825
Department:
Electrical
Product Group:
Wiring Devices
Product Type:
Power Distribution Block

Mersen MPDB66670 – Frequently Asked Questions

How fast can I get the Mersen MPDB66670 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 MPDB66670 come with a warranty?
Absolutely. The Mersen MPDB66670 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 MPDB66670?
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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