Middle Atlantic MPR RACEWAY32IN. In. - MPR-3A

Middle Atlantic MPR-3A Configurable Power Raceway

Overview

The Middle Atlantic MPR-3A is a 32-inch vertical power raceway designed for AV, security, and IT rack installations where you need a modular, field-configurable power distribution solution rather than a fixed outlet strip. At just 3 inches wide (7.6 cm), the MPR-3A fits into standard rack column spaces without consuming valuable rack unit depth, while its 32-inch (81.3 cm) body spans most mid-height equipment racks. If you're wiring up a new rack bay and need power distribution you can configure to your outlet and circuit requirements rather than a pre-built PDU, this is the form factor to evaluate from Middle Atlantic's power distribution line.

Key Features

• Configurable Power Architecture: The MPR-3A ships as a configurable platform — outlet modules and circuit options are specified at purchase rather than being factory-fixed. This matters on multi-tenant or mixed-load racks where a single PDU layout rarely fits every bay; you spec the outlet count and type to match the actual load, not the other way around.
• 32-Inch Profile (81.3 cm): The 32-inch raceway height accommodates standard mid-depth rack columns. For power distribution in security and AV racks, this length covers most scenarios without cutting or splicing — measure your column space before ordering if your rack depth differs from standard.
• 3-Inch Slim Width (7.6 cm): At 3 inches wide, the MPR-3A installs into a rack column without encroaching on equipment mounting space. This is the relevant dimension to check against your rack column width before committing — zero clearance installations require confirming the column internal dimension.
• ETL Recognized: ETL Recognition is a nationally recognized testing laboratory (NRTL) listing under OSHA — equivalent standing to UL Listing for code compliance in commercial and institutional installations. For facilities requiring third-party certification on all power distribution components, ETL Recognition satisfies that requirement without sourcing a UL-only product.

Integration and Compatibility

The MPR-3A is designed to integrate into Middle Atlantic rack systems and compatible third-party equipment racks. Because the power configuration is field-specifiable, it pairs with a range of network and security equipment racks where outlet type, circuit count, and load distribution vary by bay. Verify your rack's internal column dimensions against the 3-inch width and 32-inch length before ordering. ETL Recognition ensures the unit meets commercial electrical code requirements in the US and Canada for rack-integrated power distribution.

For installations requiring monitored or switched outlet control, evaluate whether the MPR-3A's configurable-but-unmanaged architecture fits your monitoring requirements, or whether a managed rack PDU with per-outlet metering is more appropriate for your infrastructure.

Frequently Asked Questions

Q: What does