PDUs and Universal Control Panels
off-the-shelf, standard-modified, and purpose-built
Second only to quality, Marway’s PDUs and control panels are characterized by choice; your choice of features to suit your application. We have a number of off-the-shelf products, and the ability to modify standard designs with an array of options for delivering COTS and COTS-modified solutions. From chassis designs, connector styles, switch styles, circuit breakers, indicators, and more, we can start with an existing design and modify it, or start fresh and engineer a purpose-built product exactly for your application.
Some of the more typical options include:
- Single-phase, two-phase, and three-phase
- 50-60Hz and 400Hz
- Up to 100 Amp loads and higher
- AC-in/AC-out, AC-in/DC-out, and DC-in/DC-out
- Signal conditioning with EMI/RFI filters
- Surge protection
- Various status indicators
- On/Off/EPO control
- Remote control and daisy-chain capability
- NEMA, IEC, and MIL-SPEC connectors
- Various chassis designs, finishes, handles
All Power Ranges
Marway is one of a very few manufacturers offering PDUs with high current capacities. In addition to the low current range up to 30 Amps, Marway offers medium current products between 30 and 100 Amps, and high current options in capacities such as 100, 200, and even 400 Amps.
Standards and Certifications
Marway has delivered products meeting the requirements of many commercial and military specifications, and has had various products reviewed to these standards. When certification is required, we can initiate and manage that process prior to delivery.
Examples of some of the standards and certifications we have manufactured to include:
- NEC, CSA, TUV, UL, C-UL
- CE
- MIL-SPEC
Types of PDUs
There are different categories of PDUs. Understanding the differences will help you understand which options may apply to your application.
Basic PDU
A basic PDU combines a single power input, a circuit breaker (or fuse), and multiple power outlets in an enclosure. While similar in function to an office power strip, industrial PDUs, like those made by Marway, are made of high quality parts intended for long service and demanding environments. They’re often, but not always, built as 19" rack-mount enclosures to power several electronic devices as part of a total system. Basic units will have NEMA or IEC receptacles, but can also feature a variety of specialized connectors for military and other harsh environments. Any number of signal, connector, indicator, and circuit options can enhance a basic unit’s design.
Switched PDU
These PDUs add the ability to switch individual or groups of outlets on and off to allow some power management. Switching may be accomplished through controls on the PDU or remotely through dry contacts or network communications. There may also be capability to delay the application power after a switch is turned on. This allows controlled startup of equipment which may have high surge loads upon power up close to the limit of downstream circuit breakers.
Auto-Transfer Switching PDU
These PDUs are designed to allow a primary and secondary power source to the entire set of outlets. If the primary source power fails or goes out of tolerance, the secondary source is applied. This happens using high-speed voltage sensing components so that power loss to the outlets is short enough that most equipment will not detect the power drop and remain fully operational during the power transfer. This, of course, is typically used for high-availability applications with redundant power systems.
Metered PDU
A metered PDU incorporates the ability to display real-time current draw in Amps by incorporating either digital or analog indicators. This eliminates the guesswork of estimating whether the PDU has the capacity to connect more devices.
