Middle Atlantic RLM-20A-SP Series Surge Protection Power Module

Overview

The Middle Atlantic RLM-20A-SP is a 20-amp, 120VAC controlled power module with series surge protection, designed to slot into Middle Atlantic MPR modular power rackmount systems. Series protection architecture — as opposed to shunt-style MOV designs — diverts surge energy away from the load path rather than clamping it, which means connected equipment isn't exposed to the residual let-through voltage that shunt designs allow. That distinction matters in AV and security racks where sensitive network hardware and recording equipment share the same distribution strip. The RLM-20A-SP carries a single 20A circuit with configurable power control, so you can assign it to a specific zone or device group within your rack and manage it independently. ETL Recognized compliance confirms the module has been evaluated to applicable safety standards. TAA compliance is not available on this SKU — confirm procurement requirements before specifying on government projects.

Compatibility

The RLM-20A-SP is engineered for the Middle Atlantic MPR (Modular Power Rackmount) series. It installs into MPR chassis units that accept vertical power distribution modules — verify your MPR chassis model accepts the RLM slot format before ordering. This module is not a standalone unit; it requires a compatible MPR chassis for operation. Pair it with complementary RLM modules (standard, controlled, or filtered variants) to build a zone-by-zone rack power distribution layout. Suitable for security, AV, and IT infrastructure racks running 120VAC, 20A branch circuits — standard in North American commercial installations.