Mersen MPDB Series Open-Style Power Distribution Block, Tin-Plated Aluminum

Mersen MPDB Series Open-Style Power Distribution Block, Tin-Plated Aluminum

The Mersen MPDB Series Open-Style Power Distribution Block (PDB) is engineered for splicing cables, splitting primary power into secondary circuits, and providing fixed junction tap-off points in commercial and industrial electrical systems. Built with tin-plated aluminum connectors and a glass filled polycarbonate insulating body, this block is rated 1000V AC/DC (UL and CSA), UL 1953 compliant, and configured as a 175A adder with 1-4 openings accepting 2/0-#14 AWG on the primary side and #4-#14 AWG box-to-box on the secondary side. It meets spacing requirements for feeder and branch circuits per UL508A and the National Electrical Code®.

Key Features

• Wire Range: 2/0-#14 AWG primary, #4-#14 AWG secondary, across 1-4 openings for flexible circuit tap-off configurations.
• Durable Construction: Tin-plated aluminum connectors paired with a glass filled polycarbonate insulating body for corrosion resistance and mechanical strength.
• Box-to-Box Connection: Box connector type on both primary and secondary terminations for secure conductor splicing.
• Electrical Rating: Rated 1000V AC and 1000V DC (UL), 50/60 Hz, AC/DC application, as a 175A adder configuration.
• Short Circuit Rating: 100 kA with a 60A fuse (Class G), 100 kA with a 30A fuse (Class CC), and 10 kA standalone.
• Installation: Direct screw mount installation for straightforward panel and enclosure integration.
• RoHS Compliant: Meets RoHS material restrictions for environmentally responsible manufacturing.

Certifications & Compliance

• UL 1953 Listed
• UL and CSA Approved
• Meets UL508A and National Electrical Code® spacing requirements
• RoHS Compliant

Technical Specifications

• ROHS Compliant: Yes
• Connector Type (Primary): Box
• Connector Type (Secondary): Box
• Rated Voltage AC (UL): 1000 V
• Rated Voltage DC (UL): 1000 V
• Number of Poles: Adder
• Short Circuit Rating (Class G): 100 kA with 60A Fuse
• Short Circuit Rating (Class CC): 100 kA with 30A Fuse
• Short Circuit Rating (Standalone): 10 kA
• Installation Mounting: Direct Screw Mount
• Frequency: 50/60 Hz
• AC or DC: AC/DC
• Connector Material: Tin-plated Aluminum
• Body/Insulating Material: Glass Filled Polycarbonate
• Packaging: 6 EA

Typical Applications

• Commercial and Industrial Power Distribution
• Splicing and Splitting Primary Power into Secondary Circuits
• Fixed Junction Tap-Off Points
• Panelboard and Switchgear Wiring
• UL508A Panel Building Applications

Why Mersen?

Mersen power distribution blocks combine tin-plated aluminum connectors, a glass filled polycarbonate body, and UL 1953/UL508A-compliant construction to deliver dependable, code-compliant power splicing for demanding electrical installations. With direct screw mount installation, high short circuit ratings, and RoHS-compliant materials, the MPDB Series is built for reliable performance in professional panel and distribution work.