DC Power Systems

Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf

The Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf is a compact, high-efficiency DC power system engineered for reliable performance in telecom, industrial, and security applications. Designed for space-constrained environments, this 2U configuration provides flexible output capability with integrated DC/DC conversion, ideal fo...

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The Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf is a compact, high-efficiency DC power system engineered for reliable performance in telecom, industrial, and security applications. Designed for space-constrained environments, this 2U configuration provides flexible output capability with integrated DC/DC conversion, ideal for systems requiring multiple DC voltage levels or distribution points.

This 2U power core system houses 3 × Flatpack S HE Rectifier Modules and 2 × Flatpack 2 DC/DC Modules, delivering up to 5.4 kW total output power in a slim 2U chassis.

The system provides a nominal –48 V DC output (–42 to –58.6 V range) with a maximum current capacity of up to 100 A, ensuring efficient and reliable power conversion across diverse installations. The integrated Smartpack S controller enables complete system supervision, remote monitoring, and load management for simplified maintenance and control.

Typical Applications

Telecom & Networks
• 4G / 5G base stations
• Microwave / backhaul links
• Fixed-line broadband networks

Industrial & Utilities
• Substations and SCADA systems
• Remote instrumentation for oil, gas, and mining
• Protection relays and control rooms

Security & Public Safety
• CCTV and surveillance nodes
• Fire detection systems
• Access control and intrusion alarms

Why Choose Flatpack S 5.4kW 2U Powercore with DC/DC Shelf?

• Fast Delivery:
In stock now - no long lead times.
Efficient: (~95–96%): Lower energy loss means reduced operating costs.
• Modular: Hot-swappable rectifiers and n+1 redundancy for increased reliability.
• Compact: Delivers 5.4 kW in a space-saving 2U rackmount chassis.
• Reliable: Wide temperature range (-40 °C to +65 °C) and industrial-grade components.
Flexible: Optional Rectiverter for AC output (1U add-on).
Eltek S platform for easy system expansion.

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Features
  • Hot-Swappable for Maximum Uptime – Designed for continuous operation, with hot-pluggable rectifiers and controllers, ensuring easy maintenance and expansion without downtime.
  • Advanced Control & Monitoring – Integrated Smartpack S controller provides real-time system oversight, remote monitoring via Ethernet, and intelligent power management.
  • Power Performance – Supports configurations with 3 high-efficiency rectifiers, delivering 48V DC power with up to 100A output.
  • Flexible Load Distribution – Multiple load breakers, supporting a wide range of telecom and network applications.
  • Supports 2 additional DC/DC converters of 24Vdc or 48Vdc with 1350W per module.
  • Built to suit your needs – inverter options available on request.
Specifications
MANUFACTURER PART NUMBER
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Part Number PB-CTES0302D-0-0-007
Height (RU) 2U
Module slots (Not supplied) 3 x Flatpack S HE Rectifier Modules
2 x Flatpack 2 DC/DC Modules
Compatible AC/DC Rectifiers¹⁾ 241122.105 Flatpack S AC/DC Rectifier 48/1000 HE
241122.125 Flatpack S AC/DC Rectifier 48/1800 HE
Compatible DC/DC modules¹⁾

241115.600 Flatpack 2 DC/DC 24V/1350
241115.602 Flatpack 2 DC/DC 48V/1350

1) All modules per shelf must be of the same voltage/model.

 

AC INPUT DATA
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Voltage (Vac) 100 - 250 Vac
Mains Configuration 3 x 230 Vac (3 x 1 or 3 phase)
Mains Connection Terminal Block
Frequency (Hz) 45-66 Hz
48V BATTERY DATA
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Plug in breakers 2 x 80A Circuit breakers

 

48V LOAD DATA
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Nominal System Voltage (Vdc) -48 Vdc
Voltage Range (Vdc) -42 Vdc - -58.6 Vdc
Plug in breakers  2 x 80A2)
Max. Current (A) 100A

2) Other configurations available. Please consult with your Powerbox representative.

 

DC/DC LOAD DATA
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Maximum Current (A) Up to 200 A3)
3) At 24Vdc, maximum input current to DC/DC converters is 100A from the 48Vdc bus.

 

POWER DISTRIBUTION / CABLE ENTRY
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Connection

2 x 48Vdc Battery (M6 bolt)
2 x  -48Vdc bulk (M6 bolt)
2 x DC/DC bulk (M6 bolt)

 

CONTROL & MONITORING
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
System Controller Smartpack S4)         
4) For detailed Specifications & Manuals, please refer to Smartpack S product page.

 

MECHANICAL
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Dimensions (WxHxD) tba
Weight tba
DESIGN STANDARDS
Model Eltek by Powerbox Flatpack S 5.4kW 2U Powercore with DC/DC Shelf
Electrical Safety EN 60950-1:2006+A11:2009+A1:2010+A12:2011+A2:2013, IEC 60950-1:2013, UL 60950-1:2014
EMC EN 61000-6-1:2019 / -2:2019 / -3:2007/A1:2011/AC:2012 / -4:2019
FCC CFR47 part 15B section 109: 2010, ETSI EN 300 386 v2.1.1: 2016
Environment ETSI EN 300 019: 2-1 (Class 1.2) & 2-2 (Class 2.3)
EU 2015/863 (RoHS) & 2012/19/EU (WEEE)
Normal operating conditions as per IEC 62040-5-3:2016 clause 4.2.
Other operating conditions as per IEC 62040-5-3:2016 clause 4.3, must be advised
Technical Drawings
GA_Drawing_PB-CTES0302D-0-0-007
Downloads
Eltek_Flatpack_S_5.4kW_2U_powecore_Datasheet.pdf
GA_Drawing_Eltek_PB-CTES0302D-0-0-007.pdf
Warranty & Returns

Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.