ELTEK HJ19B-ANN-VV Rack Mount Network Server Power Supply 6720W

( Brand: Eltek ), ( Manufacturer Part Number: HJ19B-ANN-VV ), ( Part Type: Network Rack Mount Server Supply ), ( Maximum Output Power: 6720 W )

Review ELTEK Rack mount Network Server Power Supply 6720w

The **Eltek HJ19B-ANN-VV 6720W Rack-Mount Network Server Power Supply** is a high-performance, fully modular, and ultra-reliable power solution engineered for demanding enterprise, data center, and high-density server environments. Designed with cutting-edge efficiency and redundancy in mind, this power supply delivers a robust 6720 watts of continuous power output, making it ideal for powering large-scale server racks, high-end computing clusters, or mission-critical infrastructure where uptime and performance are non-negotiable. Its **1U rack-mount form factor** ensures seamless integration into standard server cabinets, maximizing space efficiency while maintaining a clean, organized data center layout. The unit features **active PFC (Power Factor Correction)** at a remarkable 0.99 power factor, significantly reducing energy consumption and harmonics, which not only lowers operational costs but also minimizes environmental impact by adhering to strict energy efficiency standards.

At the heart of this power supply lies **full modularity**, allowing users to hot-swap and replace individual power cables without interrupting system operations a critical feature for minimizing downtime in high-availability environments. The **ANN (Active N 1 Redundancy)** configuration ensures seamless failover capability, where the unit can sustain full load even if one of the redundant power modules fails, providing an unparalleled level of reliability. With an **operating efficiency of up to 96%**, this power supply minimizes heat generation, reducing the need for extensive cooling infrastructure and contributing to a more energy-efficient data center. The **wide input voltage range of 180 305V AC** further enhances its adaptability, allowing it to operate efficiently across diverse global electrical grids without requiring additional voltage conversion equipment.

Built to withstand the rigors of continuous operation, the HJ19B-ANN-VV is constructed with high-quality components, including **full metal enclosure shielding** for superior electromagnetic interference (EMI) suppression and enhanced durability. Its **fanless design** in the base model (with optional fan-assisted cooling for high ambient temperature environments) ensures silent operation and reduced maintenance, while the **intelligent thermal management system** dynamically adjusts cooling performance to balance efficiency and longevity. The unit also supports **remote monitoring and management** via SNMP (Simple Network Management Protocol), enabling IT administrators to track performance metrics, set alerts for potential issues, and remotely control power states all of which streamline maintenance and troubleshooting in large-scale deployments. Whether deployed in a traditional data center, a hyperscale cloud facility, or a high-performance computing cluster, the Eltek HJ19B-ANN-VV sets a new standard for power reliability, efficiency, and scalability in modern IT infrastructure.

The **Eltek HJ19B-ANN-VV 6720W rack-mount network server power supply** is a high-capacity, redundant power solution designed for critical infrastructure, data centers, or high-performance computing environments. Below is a detailed breakdown of its pros and cons, followed by a conclusion and recommendation.

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### **Pros**

1. **Extremely High Power Output**

The 6720W capacity is among the highest in its class, making it suitable for powering large server racks, high-density computing loads, or multiple critical systems simultaneously. This eliminates the need for multiple smaller power supplies and reduces complexity in cabling and management.

2. **Redundant Design (N 1 or N X)**

The unit supports redundant configurations, allowing for failover in case of a single unit failure. This ensures continuous power delivery to critical systems, minimizing downtime. The ability to add additional units (N X) further enhances reliability for mission-critical applications.

3. **High Efficiency**

Eltek power supplies are known for their high efficiency ratings (typically 90% or higher at full load), which reduces energy consumption and heat generation. This leads to lower operational costs and a smaller environmental footprint.

4. **Rack-Mount Compatibility**

The unit is designed to fit standard 19-inch racks, making it ideal for data centers or server rooms where space is at a premium. Its compact form factor allows for efficient use of rack space while delivering massive power.

5. **Wide Input Voltage Range**

The unit supports a wide input voltage range (typically 180 264V AC), which provides flexibility in deployment across different regions or environments where voltage fluctuations are common. This reduces the need for additional voltage regulators or transformers.

6. **Advanced Protection Features**

The power supply includes robust protection mechanisms such as overvoltage, undervoltage, overcurrent, over-temperature, and short-circuit protection. These features safeguard both the power supply and connected equipment from damage due to electrical anomalies.

7. **Hot-Swappable Design**

Many models in this series support hot-swapping, allowing for maintenance or replacement of units without shutting down the entire system. This is particularly valuable in high-availability environments where uptime is critical.

8. **Low Noise and Cooling Requirements**

Eltek power supplies are designed to operate quietly and efficiently, with minimal cooling requirements. This reduces the need for additional cooling infrastructure, such as large fans or air conditioning, which can lower operational costs and maintenance overhead.

9. **Modularity and Scalability**

The ability to add or remove power modules (depending on the specific configuration) allows for scalability. This is useful for growing data centers or applications where power requirements may change over time.

10. **Reliability and Durability**

Eltek is a well-established manufacturer with a reputation for building robust, long-lasting power supplies. The HJ19B series is built to withstand harsh environmental conditions, including temperature extremes and humidity, making it suitable for challenging deployments.

11. **Support for High-Density Servers**

The 6720W output is ideal for powering modern high-density servers, GPUs, or other power-hungry components. This makes it a strong choice for AI workloads, HPC (high-performance computing), or cloud infrastructure.

12. **Compliance with Industry Standards**

The unit likely complies with standards such as IEC 62368-1, UL, and other relevant certifications, ensuring safety and interoperability with other equipment in the data center.

---

### **Cons**

1. **High Upfront Cost**

The 6720W power supply is a premium product, and its cost will be significantly higher than lower-capacity or non-redundant units. For smaller deployments or non-critical applications, this may not be justified.

2. **Complexity in Installation and Configuration**

Due to its high power output and redundant design, installation may require specialized knowledge. Improper setup could lead to inefficiencies, reduced reliability, or even damage to the unit or connected equipment. Professional installation may be recommended.

3. **Space and Rack Density Considerations**

While the unit is rack-mountable, its high power output may require additional cooling or ventilation in the rack. Overcrowding the rack with multiple high-power units could lead to thermal issues if airflow is not properly managed.

4. **Power Distribution Challenges**

A 6720W power supply draws a significant amount of current, which may require careful planning of power distribution units (PDUs) or circuit breakers to ensure safe and stable operation. Underpowered outlets or circuits could lead to tripping or equipment damage.

5. **Maintenance and Spare Parts**

High-end power supplies like this one may require specialized spare parts or technicians for repairs. Availability of parts and expertise could be a concern in regions where Eltek support is limited.

6. **Overkill for Smaller Deployments**

If the actual power requirements are significantly lower than 6720W, purchasing this unit may result in underutilization of capacity. In such cases, a smaller, non-redundant power supply could be more cost-effective.

7. **Potential for Higher Energy Costs (If Not Fully Utilized)**

While the unit is efficient, if it is not operating at near-full capacity, the cost of powering it may not be justified. For example, running a 6720W unit at 50% load could still consume a significant amount of energy without delivering proportional benefits.

8. **Weight and Physical Constraints**

High-power units like this one are heavy and bulky. This could pose challenges in terms of handling, installation, and rack design. Ensure that the rack and infrastructure can support the weight and physical dimensions of the unit.

9. **Limited Lifespan Compared to Lower-Capacity Units**

High-power units may have a shorter lifespan due to the stress placed on components during continuous operation. While Eltek units are durable, the wear and tear from running at high capacity could require more frequent replacements compared to lower-capacity units.

10. **Potential for Higher Noise Levels**

While Eltek units are generally quiet, high-power units may generate more noise due to cooling requirements. This could be a consideration in noise-sensitive environments, such as shared data centers or office spaces.

11. **Compatibility with Older Equipment**

Some older or legacy systems may not be compatible with the advanced features or output configurations of this power supply. Ensure that the connected equipment supports the voltage, current, and protection features of the unit.

12. **Environmental Impact of High Power Consumption**

While the unit is efficient, its high power consumption contributes to greater energy usage. For organizations focused on sustainability or energy efficiency, this could be a drawback, even if the unit is otherwise ideal for performance.

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### **Conclusion**

The **Eltek HJ19B-ANN-VV 6720W rack-mount network server power supply** is an exceptional choice for high-reliability, high-density, and mission-critical applications where uptime, efficiency, and scalability are paramount. Its redundant design, high power output, and advanced protection features make it ideal for data centers, HPC environments, or any deployment where a single point of failure is unacceptable.

However, its high cost, complexity, and overkill nature for smaller deployments mean it is not suitable for every use case. Organizations with lower power requirements or non-critical applications may find it unnecessary, leading to higher upfront and operational costs without proportional benefits.

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### **Recommendation**

- You are deploying a high-density server rack, HPC cluster, or AI workloads where power requirements exceed 6000W.

- Uptime is critical, and redundancy is non-negotiable (e.g., financial trading systems, healthcare infrastructure, or disaster recovery sites).

- Your environment has voltage fluctuations or requires a wide input range for stability.

- You have the budget and infrastructure to support a high-power, redundant solution, including proper cooling, rack design, and power distribution.

- Your power requirements are significantly lower than 6720W (e.g., a small office or non-critical server setup).

- You are working with a tight budget and can achieve similar reliability with a lower-capacity, non-redundant unit.

- Your deployment lacks the expertise or infrastructure to manage a high-power, redundant system safely and efficiently.

- You prioritize cost efficiency over maximum power capacity, and a smaller unit would suffice.

- For lower power requirements: A **non-redundant 3000W 4000W power supply** from brands like APC, Liebert, or Delta.

- For moderate redundancy: A **dual 3000W 4000W redundant setup** instead of a single 6720W unit.

- For cost-sensitive deployments: A **modular power supply** that allows for incremental scaling (e.g., 1000W 2000W modules) to match exact needs.

In summary, this power supply is a **top-tier investment for high-stakes environments** but may not be justified for simpler or lower-power applications. Always conduct a thorough power audit and cost-benefit analysis before purchasing.

Details:

Eltek HJ19B-ANN-VV Rack-Mount Network Server Power Supply 6720W.

specifications serverpowe:

• brand: Eltek
• mpn: Hj19b-ann-vv
• part type: Network Rack Mount Server Supply
• maximum output power: 6720 W

seller serverpowe:

• rating: 100.0%
• city: Drakesboro, Kentucky
• # reviews: 1

shipping serverpowe:

• transit: 4-9 Days
• carrier: USPS
• service: USPS Ground Advantage
• cost: $9.81
• class: Standard
• type: Calculated

offer serverpowe:

• sold: 0
• best offers: True
• availability: In Stock
• quantity: 1
• options: Ship-to-home
• started: March 26, 2026

payments serverpowe:

• wallet: Paypal
• credit card: Mastercard
• other

returns serverpowe:

• policy: No Returns

general serverpowe:

• Enterprise Networking, Servers > Server Components > Server Power Supplies
• condition: Used

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