Mersen MPDB67653 Open-Style Power Distribution Block, 3-Pole, 1000V, Tin-Plated Aluminum

Mersen MPDB67653 Open-Style Power Distribution Block, 3-Pole, 1000V, Tin-Plated Aluminum

The Mersen MPDB67653 is an open-style power distribution block (PDB) built for reliable box-to-box power connections in industrial and commercial electrical systems. UL 1953 listed and rated for 1000V AC/DC, this 3-pole block delivers a 250A ampere rating on aluminum conductors and 310A on copper conductors, with a tin-plated aluminum conductor body and a glass filled polycarbonate insulating housing. The primary side offers 1 opening per pole while the secondary side offers 10 openings per pole, supporting a wide range of conductor sizes from 350 kcmil down to #14 AWG.

Key Features

• Ampere Rating: 250A on aluminum conductors and 310A on copper conductors for flexible power distribution capacity.
• Voltage Rating: UL rated 1000V AC and 1000V DC for demanding industrial applications.
• 3-Pole Configuration: 1 opening per pole on the primary side and 10 openings per pole on the secondary side, accepting 350 kcmil to #14 AWG conductors.
• Durable Construction: Tin-plated aluminum conductors paired with a glass filled polycarbonate insulating body for corrosion resistance and mechanical strength.
• Box-to-Box Connection: Primary and secondary connector types are both box style, installed via direct screw mount.
• Frequency & Current Type: Rated AC/DC at 50/60 Hz for broad system compatibility.
• Short Circuit Withstand: 100 kA rating with Class J, T, L, RK1, RK5, CC, and G fuses, plus a 10 kA standalone short circuit rating.
• Torque Ratings: Primary torque of 275 in-lb at 350-#6, with secondary torque ratings of 28 in-lb (#6), 25 in-lb (#8), and 20 in-lb (#10-#14).

Certifications & Compliance

• UL 1953 Listed
• RoHS Compliant

Technical Specifications

• Ac Or Dc: AC/DC
• Ampere Rating Al: 250 A
• Ampere Rating Cu: 310 A
• Body Insulating Material: Glass Filled Polycarbonate
• 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: 1/4-28 x .38
• Hole Diameter Primary: 0.75 in
• Hole Diameter Secondary: 0.21 in
• Installation Mounting: Direct Screw Mount
• Number Of Openings Per Pole Primary: 1
• Number Of Openings Per Pole Secondary: 10
• 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: #6 28; #8 25; #10-#14 20

Typical Applications

• Industrial Power Distribution Panels
• Motor Control Centers
• Panelboard and Switchgear Wiring
• Box-to-Box Power Connections
• Commercial and Industrial Electrical Installations

Why Mersen?

Mersen engineers the MPDB67653 with a tin-plated aluminum conductor and glass filled polycarbonate insulating body to deliver dependable, code-compliant power distribution. Backed by UL 1953 listing, a 1000V AC/DC rating, and short circuit withstand ratings up to 100 kA across multiple fuse classes, this open-style PDB is built for demanding, high-reliability electrical systems where consistent box-to-box performance matters.