Middle Atlantic 4in. in. MPR 30A TWLK L5-30R - M-30TL-HWA

Middle Atlantic M-30TL-HWA MPR 30A Twist-Lock Hard-Wired Power Module

Overview

The Middle Atlantic M-30TL-HWA is a 30-amp, 120VAC always-on power module designed for integration into Middle Atlantic MPR rackmount power distribution systems. Featuring a single L5-30R twist-lock receptacle and a hard-wired input, this module targets installations where a dedicated high-amperage circuit is required — rack-mounted AV equipment, security head-ends, and infrastructure closets where a standard NEMA 5-15 or 5-20 outlet simply will not carry the load. The 4-inch depth (10.2 cm) fits within the standard MPR chassis footprint, keeping your rack layout predictable. If you are searching for this module, it is also referenced as M 30TL HWA in some procurement systems.

Key Features

• 30A / 120VAC Single Circuit: A single 30-amp circuit means the full capacity of your branch circuit is dedicated to this outlet — no shared breaker derating across multiple receptacles. This matters when powering a high-draw UPS, server, or AV amplifier that regularly pulls 20+ amps under load.
• L5-30R Twist-Lock Receptacle: The NEMA L5-30R configuration locks the plug physically in place, preventing accidental disconnection in vibration-prone or high-traffic rack environments. If your load device ships with an L5-30P plug, this is the correct mating outlet.
• Hard-Wired Input: The M-30TL-HWA connects directly to your building's electrical infrastructure rather than plugging into another outlet. This is the right approach when local electrical code or load calculations require a dedicated 30A circuit run — no plug-and-play compromise on current capacity.
• Configurable Power (MPR Modular Architecture): As part of the Middle Atlantic MPR always-on module family, this unit slots into a compatible MPR chassis alongside other power modules, allowing per-rack power distribution to be tailored to the exact mix of circuits the installation requires. You are not locked into a fixed outlet count or circuit arrangement.
• ETL Recognized: ETL listing confirms third-party safety testing to applicable UL standards. For commercial integrators, ETL recognition satisfies the same AHJ (Authority Having Jurisdiction) requirements as UL listing for most jurisdictions — important when a building inspector reviews the rack installation.
• 4-Inch Depth: At 4 in. (10.2 cm), this module is sized to integrate flush within standard Middle Atlantic MPR chassis without protruding beyond the rack depth envelope — relevant in shallow-depth wall-mount or surface-mount rack enclosures where every inch counts.

Integration & Compatibility

The M-30TL-HWA is engineered for the Middle Atlantic MPR modular power platform. Verify chassis compatibility before ordering — not all MPR chassis accept the 30A module slot; consult the chassis specification to confirm bay width and circuit support. This module is appropriate for rackmount power distribution applications where the downstream device requires an L5-30R connection. Hard-wired input installation should be performed by a licensed electrician; the module itself does not include overcurrent protection beyond what is provided upstream at the panel. For installations requiring surge protection or power conditioning at the rack level, evaluate whether a supplemental power conditioning unit is warranted upstream of this module. When planning multi-circuit rack power layouts, a rack power planning guide can help size circuits correctly across mixed loads.

Frequently Asked Questions

Q: What receptacle type does the M-30TL-HWA provide?

A: The M-30TL-HWA provides a single NEMA L5-30R twist-lock receptacle rated at 30 amps, 120VAC.

Q: Does the M-30TL-HWA use a plug-in or hard-wired input connection?

A: It uses a hard-wired input — the module connects directly to building wiring rather than plugging into another outlet. Installation requires a licensed electrician and a dedicated 30A branch circuit.

Q: How deep is the M-30TL-HWA?

A: The module measures 4 inches (10.2 cm) in depth, designed to fit within standard Middle Atlantic MPR chassis without exceeding typical rack depth profiles.

Q: Is the M-30TL-HWA ETL listed or UL listed?

A: The M-30TL-HWA is ETL Recognized, which satisfies the same safety listing requirements as UL recognition for most commercial installation jurisdictions.

Q: How many circuits and outlets does the M-30TL-HWA include?

A: One circuit, one outlet — a single dedicated 30A L5-30R receptacle. This ensures full circuit capacity is available to the connected load without sharing.

Q: Can the M-30TL-HWA be combined with other modules in an MPR chassis?

A: Yes. The MPR modular architecture allows this 30A module to be installed alongside other Middle Atlantic MPR power modules within a compatible chassis, enabling a customized per-rack circuit distribution layout.

Karl Wilson

The M-30TL-HWA fills a specific gap in rack power design: when your load device demands a dedicated 30A/120VAC circuit with a locking L5-30R connection and you need that circuit delivered through the MPR modular chassis rather than a standalone PDU. I reach for this module in security head-end racks where a high-draw UPS or large NVR array is the anchor load — the hard-wired input means you are not daisy-chaining current through an upstream outlet, which is exactly what a 30A load should not be doing.

Technical Highlights:

• 30A Single Circuit: Dedicated 30-amp capacity with no shared derating — the full branch circuit feeds one L5-30R outlet, which is the correct architecture for loads that regularly approach 20-25A sustained draw.
• L5-30R Twist-Lock: Physical locking prevents pull-out under vibration or accidental contact — a non-trivial concern in racks that get opened frequently during maintenance windows or in mobile/transportable rack enclosures.
• ETL Recognized: Third-party safety recognition to UL standards; satisfies AHJ inspection requirements in the vast majority of US commercial jurisdictions without additional field labeling or variance.

Deployment Considerations:

• Hard-wired input means this module requires a dedicated 30A branch circuit terminated by a licensed electrician — factor this into project scheduling and rough-in coordination before the rack is populated.
• The module itself provides no overcurrent protection; your upstream panel breaker is the sole protection device. Confirm breaker sizing matches the 30A rating — do not install on a 20A circuit assuming the outlet will self-limit.

Best fit: security operations center racks or AV integration head-ends where a single high-draw device (large-format UPS, multi-drive NVR, or power amplifier) anchors the rack load and requires a code-compliant locking circuit within the MPR chassis layout.