Description
The Mersen MPDB67433 is a 3-pole open-style power distribution block designed for secure power splicing and branch circuit distribution in industrial control panels. Rated for 1000 VAC/VDC, it features tin-plated aluminum connectors accommodating aluminum wiring up to 310A and copper wiring up to 380A.
Part of Mersen’s intermediate MPDB series, this 3-pole block includes 1 primary box opening (wire range 500 kcmil to #4 AWG) and 8 secondary box openings per pole (wire range #2 to #14 AWG). Built with a durable glass-filled polycarbonate body, it measures 5.28″ wide, 3.08″ long, and 3.25″ high (134.1 x 78.2 x 82.6 mm) and supports direct screw mounting.
Key Features
- Dual Ampacity Rating: Rated up to 310A with aluminum conductors and 380A with copper conductors for flexible system design.
- 1000V AC/DC Insulation: Engineered to meet rigorous high-voltage requirements for modern industrial power distribution.
- 3-Pole Distribution Layout: Configured with 1 primary input and 8 secondary output openings per pole utilizing reliable box-type connections.
- High Short-Circuit Withstand: Achieves up to 100 kA SCCR when paired with appropriate upstream UL-classified fuses (Classes CC, J, L, RK1, RK5, T, and G).
- Robust Construction: Molded from high-dielectric glass-filled polycarbonate with tin-plated aluminum terminals for superior corrosion resistance and thermal stability.
Specifications
| Technical Specification | Detail |
|---|---|
| Product Model | MPDB67433 |
| Brand | Mersen (MPDB Series) |
| Product Type | Open-Style Power Distribution Block |
| Number of Poles | 3-Pole |
| Ampere Rating | 310 A (Aluminum) / 380 A (Copper) |
| Voltage Rating | 1000 VAC / 1000 VDC |
| Primary Openings / Wire Range | 1 per pole / 500 to #4 AWG (Box Type) |
| Secondary Openings / Wire Range | 8 per pole / #2 to #14 AWG (Box Type) |
| Short Circuit Current Rating (SCCR) | 10 kA standalone; up to 100 kA with specified Class J, T, RK1, RK5, CC, G, and L fuses |
| Connector Material | Tin-Plated Aluminum |
| Insulating Body Material | Glass Filled Polycarbonate |
| Mounting Type | Direct Screw Mount |
| Frequency | 50/60 Hz |
| Standards & Certifications | UL 1953 Listed, CSA Approved, RoHS Compliant |
| Primary Applications | Feeder and branch circuit power distribution, cable splicing, and fixed junction tap-off points in industrial control panels |
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