- Home
- ITE Power Supply
- UES409-SPA-OP | 409W Industrial 54V ITE Open Frame Power Supply
UES409-SPA-OP | 409W Industrial 54V ITE Open Frame Power Supply
UES409-SPA-OP Series
A high-density 409W open frame switching power supply delivering a dedicated 54V rail. Designed for Information Technology Equipment (ITE), it features industrial-grade 6KV surge immunity and a 34mm low-profile height to fit standard 1U chassis applications.
AC/DC Dual Input: Supports 90-264VAC or 190-290VDC for global grid and DC bus compatibility.
6KV Surge Rating: Enhanced immunity (IEC/EN 61000-4-5) for outdoor telecom and unstable grids.
1U Compatible: 34.0mm total height provides necessary clearance in slim rack-mount enclosures.
PoE++ Focused: 54V output accounts for voltage drops in high-wattage 802.3bt networking.
Efficiency: Complies with Energy Efficiency Level VI and EN62368-1 safety standards.
Models & Ratings
The UES409-540YYYSPA-OP is a single-rail power solution for high-draw networking hubs and industrial controllers. While standard 48V supplies may struggle with cable loss at full load, this unit maintains a stable 54V output at up to 7.6A. The “YYY” suffix indicates the current rating, allowing for precise configuration between 0.01A and 7.6A based on the thermal and load profiles of your specific hardware.
| Model Number | Power(W) | Input Voltage Range(VAC) | Output Voltage(VDC) | Output Current(A) | Operating Temperature Range(℃) | Safety Standards |
| UES409-540YYYSPA-OP | 409 | 90-264VAC OR 190-290VDC | 54 | 0.01-7.6 | -10~+60 | CE |
Mechanical Details
Physical height is the main constraint for 1U equipment. At 34.0mm (1.34″), the UES409-SPA-OP fits within the 44.45mm vertical limit of 1U chassis while leaving room for airflow and safety insulation. The component layout on the 170 x 100 mm board is optimized to put high-heat parts in the path of typical enclosure fans to prevent thermal throttling.
Dimensions
Weight
170.0 (L) x 100.0 (W) x 34.0 (H) mm
About 490g
Input Specifications
Designed for global deployment, the unit accepts universal AC input (90-264V). It also supports 190-290VDC, matching the high-voltage DC (HVDC) power distribution increasingly found in modern telecom hubs and data centers. Standby power is kept below 1.0W to meet Level VI energy conservation mandates.
Input Voltage Range
Input Current
Average Efficiency
Standby Power
90-264VAC / 190-290VDC
7.6A Max
Energy Efficiency Level VI
1.0W Max
Environmental & General
This series is built for hardware installed in non-conditioned sites like outdoor cabinets or industrial floors. It is rated for operation from -10°C up to 60°C. A 5,000m altitude rating and an MTBF of 200,000 hours reduce the frequency of site visits and maintenance in remote or high-altitude deployments.
Operating Temperature
Storage Temperature
Operating Humidity
Operating Altitude
MTBF
-10°C to 60°C
-40°C to 70°C
5% to 90% RH, non-condensing
5,000m
>200,000 hours at full load @ 25°C ambient (MIL-HDBK-217)
Protection
The UES409-SPA-OP includes active protection to prevent hardware damage from grid or load faults. In the event of a short circuit, the unit enters “Hiccup Mode,” restarting automatically once the fault is removed. This eliminates the need for manual resets, which is a major advantage for remote telecommunication sites.
Short Circuit
Over Current
Over Voltage
Trip and restart (hiccup mode)
Auto-recovery upon removal of fault
Built-in protection to prevent high-voltage output
Safety Approvals
Certified to the EN62368-1 safety standard, this power supply meets the current requirements for Information Technology Equipment (ITE) and networking hardware. This pre-certified module reduces the time and cost for manufacturers to get their finished products through global regulatory testing.
EN62368-1
EMC
High-power switching can interfere with signal integrity in data environments. This unit is optimized for Class A emission performance and features 6KV surge immunity (IEC/EN 61000-4-5). This makes it significantly more resilient to lightning-induced transients and grid switching than standard commercial-grade power modules.
| Item | Standard | Level / Class |
|---|---|---|
| Conduction/Radiation | EN55032 / CISPR32 | Class A |
| Harmonic Currents | IEC/EN 61000-3-2 | Class A |
| Surge Immunity | IEC/EN 61000-4-5 | ±8KV DM, ±6KV CM (6KV Meet) |
| ESD Immunity | IEC/EN 61000-4-2 | ±8KV Air, ±6KV Contact |
Download File
Common Applications
The UES409-SPA-OP is a dedicated internal power source for high-draw ITE hardware where vertical space and electrical resilience are critical. The 54V rail specifically addresses voltage drop issues in PoE++ (802.3bt) infrastructure, ensuring consistent power delivery across maximum Ethernet cable runs. Its 34mm low-profile height solves the integration challenge for 1U chassis used in network security and storage, providing enough clearance for airflow and insulation. For edge gateways and outdoor kiosks, the 6KV surge immunity prevents hardware failure caused by unstable power grids or lightning-induced transients.
Frequently Asked Questions
Technical selection of a 409W power module goes beyond basic voltage and current ratings. These questions address the most common engineering concerns regarding vertical clearance in 1U racks, the economic benefit of 6KV surge immunity, and the specific use cases for 54V outputs in PoE++ and DC bus architectures.
How does the 34.0mm height fit in 1U enclosures?
Standard 1U chassis have an internal height of roughly 44.45mm. This unit’s 34mm height provides the 10mm+ clearance required for safety insulation and thermal airflow between the PCB and the chassis lid.
Why use 54V instead of standard 48V?
High-wattage PoE++ devices cause significant voltage drops over long Ethernet runs. 54V ensures that at the end of a 100-meter cable, the device still receives at least 48V-52V, preventing device reboots or packet loss.
How does 6KV surge immunity reduce my RMA costs?
Standard supplies usually fail at 1KV-2KV spikes. In outdoor sites, lightning and grid transients are common. Our 6KV immunity prevents these spikes from damaging the supply, directly lowering your field failure rates and repair costs.
Can the UES409-SPA-OP run on DC power systems?
Yes. It supports DC input from 190VDC up to 290VDC, matching the high-voltage DC (HVDC) distribution common in modern telecom and data center facilities for higher efficiency.
What cooling is required for continuous 409W operation?
The unit is designed for convection cooling. However, for continuous operation at full 409W load in ambient temperatures above 40°C, we recommend forced-air cooling (fans) to maintain long-term MTBF.
Related Models
ITE and networking hardware often require specific power capacities or different form factors. If the 409W output or the open-frame format doesn’t meet your current design constraints, browse these alternative power solutions ranging from 60W to 500W.
Related Resources
Engineering data and selection criteria for high-power ITE hardware. These resources focus on 62368-1 safety standards, thermal management for 1U racks, and the operational impact of Level VI efficiency.
2025 Power Supply Selection Guide for Engineers (ITE)
Technical factors for choosing 400W+ open frame modules. This guide covers footprint constraints, thermal load calculations, and safety requirements for integrated industrial networking hardware.
What is an ITE Power Supply Used For?
Application scenarios for 62368-1 certified power units. It explains why networking gear, 5G base stations, and high-wattage PoE hubs require specific surge and EMI ratings for professional deployment.
Energy Efficiency Rating of ITE Power Adapters
Analysis of how Level VI conversion efficiency affects internal heat buildup. It explains why efficiency ratings are critical for power modules mounted inside enclosed 1U chassis with limited airflow.
Request Technical Support & Pricing
Our engineering team provides dedicated technical assistance for our entire I.T.E. and industrial power supply portfolio. Whether you are navigating IEC/EN 62368-1 safety compliance, require custom DC output tuning, or need mechanical integration advice for high-density enclosures, we ensure your project specifications are met with technical precision.
✔ IEC/EN 62368-1 & Global ITE Safety Compliance
✔ Custom DC Connectors, Cables & Voltage Tuning
✔ Engineering Samples Available for System Evaluation
✔ Direct Technical Response from Engineers within 24h