Basic PDUs

Basic PDUs

Geist’s Basic PDUs offer reliable power distribution to the cabinet to help manage power capacity and increase functionality. Basic PDUs cover a wide variety of electrical options, ranging from 10A to 120A in IEC, NEMA, British, Schuko and mixed configurations. Select the PDU finder at the top of the page to view Geist’s extensive selection of rack PDUs.


Basic Upgradeable PDU

Basic Upgradeable PDU


Basic Upgradeable PDU

The Geist Basic Upgradeable PDU gives data center managers the flexibility to install basic power distribution as required today with the option to upgrade technology as needs evolve.

To establish this upgrade path, our engineers took Geist’s robust PDU design and incorporated an Interchangeable Monitoring Device (IMD). Geist’s reliable power strips last for years and with the new IMD users can install the latest monitoring and technology without replacing the entire PDU. The hot-swappable IMD can be upgraded in a few simple steps without interrupting power to critical servers.

Special Features

Upgrade Ready

Should your facility not be ready for any power metering or monitoring today, start with the basic upgradeable unit and add intelligence later. The IMD is not included with the Basic Upgradeable line, but the technology is included within the PDU. Install the technology you need today with the ability to upgrade as needs evolve.

Hot-Swappable Units

Hot-Swappable IMD

Add, remove, or switch Interchangeable Monitoring Device (IMD) without interrupting power to critical servers.

High Temperature Grade

60°C working ambient variants for high temperature environments.

Low Profile Breakers

Geist’s low profile breakers reduce the PDU depth by over 40% compared to traditional breakers. The slimmer design protects against electrical overloads and allows the PDUs to be easily installed in data center cabinets with limited space.

Geist offers low profile breakers as a standard feature on select basic and intelligent PDU configurations. Customers may choose to incorporate the smaller breaker design on applicable custom PDU orders.

U-Lock Receptacles

U-Lock C13 and C19 Locking ReceptaclesGeist offers IEC C13 and C19 receptacles with an integrated locking feature built within the receptacle housing. The locking mechanism is protected against vibration and external elements that can easily dislodge external locking clips or guides. This self-contained locking mechanism works with any standard IEC plug. Locking receptacles come standard on some units and are available for custom orders.

Colored Chassis

Colored Chassis for Power Distribution UnitsGeist offers colored chassis options to help data center personnel easily identify the input feed of each PDU, helping create proper load balancing of attached equipment and minimizing error that could lead to accidental downtime.

Available Colors:




Surge PDU

Random voltage spikes cause irreparable damage to critical equipment. Geist’s Surge suppression power distribution units provide power to connected equipment, utilizing parallel circuitry, for when a surge or spike disables surge suppression.  The surge suppression technology will dissipate up to 720 Joules of energy for protection of line-neutral, line to ground and neutral to ground configurations. 

Geist’s Surge PDUs are available with a local display option in a variety of 15A and 20A /120V NEMA configurations. They are constructed with heavy-duty, powder-coated steel housings so they're durable and long-lasting.

Transfer Switch

Basic Transfer Switch



Geist’s auto-transfer switch provides redundant power for single-corded IT equipment.  When it’s supporting legacy or specialized equipment that isn’t designed with a secondary/redundant power input, Geist’s ATS can help to ensure uptime by providing power to single-corded devices from separate input power sources.

The Geist Auto-Transfer Switch (ATS) allows you to automatically switch the load from the primary input to a secondary input source in the event of power loss. Co-location providers can often find single-corded equipment in their customer’s racks, but providing 100% uptime in these circumstances can be extremely difficult. By integrating a Geist ATS into the rack allows end-users the ability to change their single feed equipment into a dual feed with ease.

An ATS can help reduce potential downtime associated with single-corded IT equipment. For correct operation, Geist ATS units require the input feeds to be phase synchronized.


Basic Upgradeable PDU User Manuals

Basic Upgradeable Download
Basic Rack PDU Download
IMD Product Overview Download

Click here for additional product manuals.


Geist's FAQ section aims to answer specific questions related to this product offering. If you need further support, please contact Tech Support directly.

Basic PDUs FAQs

Can I get a basic PDU without an on/off switch?

Most Geist Basic PDUs have the option to have the on/off switch removed.  However, some basic PDUs utilize hydraulic-magnetic circuit breakers which can be manually shut off, therefore acting as a primary disconnect.  These breakers have a guard to help prevent accidental disconnects.

Is there a way to protect an on/off switch from being used?

Geist offers an option to have a switch cover installed on a basic PDU with an on/off switch.  This switch cover must be installed when the unit is manufactured.  Please contact Geist for a part number.

Can I order different cord lengths?

All Geist PDUs have a predetermined standard cord length, but can be ordered with 2-15 ft. (.6-4.5m) cords.  Cords longer than 15 ft. (4.5m) are not available on standard units due to regulatory compliance limitations in North America. In the EU and other parts of the world longer lead lengths are available on request. Please contact Geist for exact part number configuration for your requested cord length.

Are Geist Basic PDUs UL/CE Listed?

Yes, all Geist PDU products carry a UL and/or CE Listed mark. If you’re looking for countries outside North America and the EU then please contact Geist.

Are basic PDUs available without circuit breakers?

For UL products, most 15A or 20A basic PDUs can be configured with or without a circuit breaker. For CE marked products, units up to and including 16A do not come with circuit breakers as standard. Please contact Geist to determine the correct part number to meet your needs.

What local meter options are available?

Geist basic PDUs are available with two local meter options.  The Power Meter option scrolls through Power Factor, Amps, Volts and Watts.  The Current Meter shows the current draw in Amps.

Do I have the option to purchase PDUs in various colors?

Yes, Geist offers its power distribution units in various colors to:

  • Identify input feed A/B, for racks with multiple connected PDUs
  • Identify which phase/circuit a single phase PDU is connected to

In addition to black, other available colors include:


What is surge suppression?

Surge suppression technology helps to limit voltage spikes from potentially damaging the sensitive electronics in IT equipment, televisions, audio components and other devices.

Do Geist surge suppression units have RFI/RMI filtering?

No, the Geist line of surge suppressed power strips do not contain any RFI/EMI filtering.

What are the protection modes of Geist surge suppressed power strips?

Geist surge suppressed power strips provide 3-levels of protection: line to neutral, line to ground and neutral to ground.

What is the Joule rating of Geist PDUs with surge suppression?

Geist unit have a rating of 720 Joules.

Can I order a surge unit without a circuit breaker?

No, Geist surge products require over current protection to meet regulatory requirements. This is accomplished with the use of a resettable circuit breaker.

Does Geist offer 208V units with surge suppression?

Geist does not offer standard surge units in 208V. Please contact Inside Sales at 800-432-3219 to discuss what custom options may be available.

Are Geist 3-phase units available with surge suppression?

Geist does not currently offer any 3-phase product with surge suppression.

Can I select the input from the front of the Auto Transfer Switch?

No, the Geist Auto Transfer Switch input sources are not selectable.  The ‘A’ input should be connected to the primary power source, with the ‘B’ input being connected to the secondary source.

Can I add a Power meter later on?

No, the Power meter option must be selected at time of order.

What is the expected operational life expectancy of the Auto Transfer Switch?

The Auto Transfer Switch has been designed with a life expectancy of 100,000 operations. Within a Data Center environment this would be considered a life time warranty for the switching system.

What is the warranty of the Auto Transfer Switch?

Units without a local display have a lifetime warranty. Units with the local display have a 3 year warranty.

What does the Power Meter display?

The Power Meter displays the power being used by the connected equipment.

What indications do I have on the unit?

The Auto Transfer Switch unit has LEDs on the front of the unit to show which source (A or B) is being used at the moment and what sources are available (A/B). With the local display option you get the ability to see either Volts/Amps/Watts or Power Factor when using the Power Meter, or Amps only when using the Current Meter option.

What is Phase Synchronization?

Phase synchronization is the process by which two or more cyclic signals tend to oscillate with a repeating sequence of relative phase angles.

What happens if my inputs are not synchronized?

If the input sources are not synchronized it could lead to damaging the relay causing the unit to fail. It could also lead to an upstream breaker sensing a fault condition and opening the circuit.

Does the Basic Upgradeable PDU provide any monitoring capabilities?

No, the basic PDU is offered to provide an upgrade path. When you are ready to start monitoring you will need to add an Interchangeable Monitoring Device (IMD).

Can the upgrade process take place with the PDU powered?

Yes, the PDU power can remain on during the removal and/or installation of the Interchangeable Monitoring Device.