1. Power Demands and the Future of Data Centers
2. IT Professionals and the Need for Versatile & Compact Equipment
3. Explore the Saf-D-Grid Connector Series
4. What is the Original Saf-D-Grid® Connector Solution?
6. Powering the Future with New Saf-D-Grid Models
7. Saf-D-Grid Max: Supporting High Amperage Applications
8. Saf-D-Grid Three Phase 20A: Supporting High Voltage Data Centers
9. Saf-D-Grid Customization Options
10. Take the Quiz
The demand on data centers is growing at an astonishing pace. Generative artificial intelligence and machine learning models require more power to train the AI models and perform inference operations. Rack power densities that once peaked at 20kW now exceed 100kW, with 1MW on the horizon for the largest hyperscale applications. These densities will only continue to grow at a rapidly increasing rate
To keep up with demand, new data centers are breaking ground at a rapid pace. For example, Microsoft, BlackRock, Global Infrastructure Partnership (GAIIP), and MGX announced in fall 2024 they would partner to raise $100 billion to invest in new data center developments.
Data centers aren’t just building bigger, either. Many are exploring new power distribution strategies. Some are adopting high-voltage DC power distribution, a strategy that can lead to increased efficiency by reducing the number of required AC-DC conversions. Others are leveraging high-powered AC alternatives to the traditional 415VAC three-phase or 240VAC single-phase distribution. Options like 480VAC three-phase power and 277VAC single-phase bring higher voltage directly to the PSU and offer multiple advantages, including space savings, increased efficiency, and material cost reduction (since higher-gauge, thinner wires can be used).
Regardless of the chosen power distribution method, every data center requires equipment designed to handle their voltage and current specifications. The receptacle and power cord that connects the power distribution units (PDU) in the racks to the servers or provides input power to the server units is an example of a small – but crucial – piece of data center architecture.
These components must be rated for both the type of voltage (AC or DC) and the voltage magnitude – a somewhat complicated task for data centers that fall outside traditional 415 VAC configurations. Information and Communication Technology (ICT) equipment engineers working with DC-powered data centers often encounter issues finding DC-rated equipment and components (e.g. connectors and cables), while confronting with a lack of industry standards. In addition, those in high-voltage AC data centers may have trouble finding connectors that take full advantage of 480V power to maximize power transfer.
Another crucial consideration for modern data center equipment involves space-saving designs, particularly within developed markets where new construction cannot keep up with demand. For example, Northern Virginia's data center vacancy rate dropped from 1.8% in 2023 to 0.9% in 2024 – despite an 18% increase in inventory over the same period. In response to these challenges, data centers face increasing pressure to optimize rack space to meet demand.
One effective strategy involves adopting connectors and power cords with a power density advantage – meaning they pack the most power within the smallest possible footprint. This advantage can be determined by comparing the connector’s size to its power (voltage and amperage) capabilities.
The International Electrotechnical Commission (IEC) formalized these sizes in its IEC-320 standard. Most data center rack-mounted power distribution units (PDUs) rely on C13/C14 sized connectors but – if more current is required – larger C19/C20 connectors can also be used. Standard C13/C14 connectors support 10A (IEC) and 15A (UL) at a 250VAC (AC only) maximum. Standard C19/C20 connectors support 16A (IEC) and 20A (UL) at 250VAC (AC only) maximum. Any connector that provides greater power within the same footprint can be said to hold a power density advantage.
Selecting the right connector that optimizes power density and versatility is an important method to meet the power demands of today and for the future. Anderson Power, an international leader in high power interconnect solutions, offers the Saf-D-Grid receptacle and power cord to meet this need. Saf-D-Grid is available in three standard types: Saf-D-Grid, Saf-D-Grid Max, and Saf-D-Grid Three Phase 20A.
The original Saf-D-Grid delivers an impressive power density advantage over standard connectors. Using Saf-D-Grid, data centers can take full advantage of 380VDC or 277VAC power and avoid the power losses inherent in power conversions. Saf-D-Grid comfortably supports the growing number of data centers that rely on HVDC (such as 380VDC) and 277VAC single-phase power. Most standard connectors only support up to 250VAC (AC only).
The original Saf-D-Grid supports:
Saf-D-Grid can be used to connect a variety of applications within a data center power train, including the PDU to the switch, the PDU to the server, the PDU to storage, and more.
Saf-D-Grid is the culmination of a proven history in data center power solutions. Anderson Power has led the industry since the introduction of its SB® Series electrical connector in 1953. Saf-D-Grid was originally developed in 2011 for DC-powered data centers, and continues to provide an excellent appliance connector for 380VDC power distribution. However, Saf-D-Grid also offers significant power density advantages to AC powered data centers.
Today, both AC and DC powered data centers around the world — including in the US, Europe, China, the Middle East, Australia, and more — trust the original Saf-D-Grid to connect their ICT equipment efficiently.
As power demands surge and data center rack power requirements increase, the Saf-D-Grid Series is expanding to meet the evolving needs of next-generation data centers. In 2025, Anderson Power is introducing Saf-D-Grid Max, Saf-D-Grid Three Phase 20A, and more customizable options for the original Saf-D-Grid.
“We are determined to meet the needs of a wide variety of data center architectures,” said David Beach, Market Segment Manager at Anderson Power. “As the demands from AI workloads increase, we’re introducing more flexible power connections for DC and AC power systems with an eye toward scalability.”
One method to meet increasing power demands involves increasing the amperage. However, this approach requires high-current connectors and larger power cords specifically designed to safely handle higher currents.
The new Saf-D-Grid Max provides a premium solution for design engineers and information and communication technology (ICT) professionals aiming to future-proof their power infrastructure. This connector fits within a standard IEC 60320 C19/C20 footprint while delivering significantly greater voltage and current capabilities. With its superior power capabilities, Saf-D-Grid Max provides the higher amperage support required by some modern data centers.
Saf-D-Grid Max is a high-current connector that supports 6.6x the power of a C19/C20 in the same footprint with:
Up to 55A of UL-rated maximum current – compared to standard IEC C19/C20 connectors that offer 20A. IEC amperage is targeted for 63A and is pending certification.
Up to 600V AC/DC of disconnect voltage – compared to standard IEC C19/C20 connectors that support 250VAC and do not support DC power architectures.
Up to 305V and 40A of UL-rated current interrupt – compared to standard IEC C19/C20 connectors that support 250VAC and 20A.
Increasing numbers of data centers are choosing to maximize power delivery by using three-phase power while keeping amperage the same or less. This is because three-phase power provides 3x the power with the addition of only one or two wires (depending on whether delta or wye configurations of three-phase power are implemented).
One strategy is to maintain three-phase AC power all the way through the PDU and into the rack-mounted PSUs, rather than converting it to single-phase power within the rack PDU. The PSUs then convert the three-phase AC into low-voltage DC power to support the IT equipment. Learn more about the advantages and challenges of adopting three-phase power architecture in this article.
In adopting three-phase designs, one key challenge involves the limited availability of equipment (such as connectors) that are rated for higher voltages and have the correct number of properly rated power contacts. The rack power distribution components must be engineered for both three-phase power output and input.
In response, Anderson Power developed the new Saf-D-Grid Three Phase 20A specifically for three-phase PDU input/output and PSU input power architectures. The compact connector fits within a standard C13/C14 footprint and is rated for up to 20A, 480V line-to-line, and 277VAC line-to-neutral. For data centers looking to support higher voltages while saving space and cable costs, Saf-D-Grid Three-Phase 20A provides a superior power density advantage.
Saf-D-Grid Three-Phase 20A is a high-voltage connector that supports:
Up to 16.63kW of three-phase power within the space of a standard IEC C13/C14 connector.
Up to 6.65X the power of a standard C13/C14 within the same compact footprint.
Up to 4.16X the power of a standard IEC C19/C20 connector while occupying less space.
Additionally, Anderson Power has introduced new customization options for the original Saf-D-Grid connector. The Saf-D-Grid Low Clearance and Saf-D-Grid 400 PDU Output Key provide additional options for data centers with unique demands. In addition, Saf-D-Grid can be further customized to support your data center’s specific requirements.
Beyond amperage and voltage ratings, Saf-D-Grid includes many other features designed for connection durability and security. The features below are included in all Saf-D-Grid models, except where noted.
AC/DC Versatility: Saf-D-Grid is a solution for every data center. The receptacle and power cord are compatible with PDUs and PSUs regardless of AC or DC power distribution, providing a quality option for those with rarer DC specifications.
High Thermal Rating: Saf-D-Grid is perfect for hot-aisle environments with a thermal rating of up to 105°C, providing extra headroom for conducting current in higher ambient temperature environments. Most standard connectors only offer a 70°C rating.
Integrated Latch: A mechanical tab on the connector prevents accidental disconnects by requiring a button press to disengage, avoiding power loss to critical equipment.
Hot-Plug Rated: Rated for current interruption for both electronic (capacitive) and electrical (resistive) loads. (Except for the Saf-D-Grid Three Phase).
Ground Contact: The ground pin is longer than the two live contacts to mate first and break connection last, providing the safety of an earthing path before engagement.
Touch-Safe/Shock Protection: Saf-D-Grid minimizes the risk of accidental contact with hazardous voltage by passing the UL and IEC finger probe (plug and receptacle) and 3mm probe tests (receptacle).
Connector Housing: Connector features a long housing designed to contain arcs and enhance safety when disconnecting.
Today, ICT engineers are navigating two major challenges: the growing, AI-driven demand for power and the lack of rack space to meet that demand. Data centers are exploring new, high-power architectures – including DC power and 480VAC three-phase power – to move into this future. Saf-D-Grid from Anderson Power delivers a powerful, versatile solution. Engineered for both AC and DC applications with high voltage and amperage options, it meets the needs of today’s data centers while preparing for the demands of the future.
With multiple Saf-D-Grid models now available, your ideal choice will depend on your specific data center’s architecture, space, and power requirements. Whether you need the original Saf-D-Grid, the Saf-D-Grid Max, the Saf-D-Grid Three Phase, or a custom-configured solution, we can help you decide.
To determine which type of Saf-D-Grid solution would be best for you, take our quick five-question quiz. You can also request a consult with our team of Anderson Power experts to see how Saf-D-Grid can best support your ICT equipment: https://www.andersonpower.com/us/en/contact-us/request-a-consult.html.
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