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DC Power Systems

Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar

The Eltek by Powerbox Flatpack S 5.4 kW 4U Powercore with DC/DC Shelf and Solar is a rugged, modular DC power system engineered to meet the demands of hybrid and multi-source power deployments across telecom, industrial, and security environments. It’s the ideal solution for projects requiring reliable DC power, solar input, and multiple voltage outputs all in one integrated 4U system.

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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.
  • Supports 2 solar strings with MPPT high efficiency converters with front interfacing MC4 connectors.
Specifications
MANUFACTURER PART NUMBER
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Part Number PB-CTES0304M-0-0-0-009
Height (RU) 4U
Module slots (Not supplied) 3 x Flatpack S HE Rectifier Modules
2 x Flatpack 2 DC/DC Modules
2 x Flatpack 2 Solar 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
Compatible Solar modules 241119.650 Flatpack 2 Solar 48/3200 HE
1) All modules per shelf must be of the same voltage/model.

 

AC INPUT DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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
SOLAR INPUT DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Solar String OC Voltage Range (Vdc) 85 Vdc - 430 Vdc
Solar Startup Voltage (Vdc) 150 Vdc
Max. Solar String SC Current (A) 20.3A
48V BATTERY DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Plug in breakers 2 x 80A Circuit breakers

 

48V LOAD DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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 4U Powercore with DC/DC Shelf and Solar
Maximum Current (A) Up to 200 A3)
3) Maximum allowable input current to DC/DC converters is 100A from the 48Vdc bus.

 

POWER DISTRIBUTION / CABLE ENTRY
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Connection

2 x 48Vdc Battery (M6 bolt)
2 x  -48Vdc bulk (M6 bolt)
2 x DC/DC bulk (M6 bolt)
2 x Solar (MC-4 M+F)

 

CONTROL & MONITORING
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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 4U Powercore with DC/DC Shelf and Solar
Dimensions (WxHxD) tba
Weight tba
DESIGN STANDARDS
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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 Illustrations
GA-Drawing-PB-CTES0304M-0-0-0-009
Downloads
Eltek_Flatpack_S_5.4kW_4U_powecore_with_DC_DC_Shelf_and_Solar.pdf
GA_Drawing_PB-CTES0304M-0-0-0-009.pdf
MANUFACTURER PART NUMBER
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Part Number PB-CTES0304M-0-0-0-009
Height (RU) 4U
Module slots (Not supplied) 3 x Flatpack S HE Rectifier Modules
2 x Flatpack 2 DC/DC Modules
2 x Flatpack 2 Solar 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
Compatible Solar modules 241119.650 Flatpack 2 Solar 48/3200 HE
1) All modules per shelf must be of the same voltage/model.

 

AC INPUT DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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
SOLAR INPUT DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Solar String OC Voltage Range (Vdc) 85 Vdc - 430 Vdc
Solar Startup Voltage (Vdc) 150 Vdc
Max. Solar String SC Current (A) 20.3A
48V BATTERY DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Plug in breakers 2 x 80A Circuit breakers

 

48V LOAD DATA
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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 4U Powercore with DC/DC Shelf and Solar
Maximum Current (A) Up to 200 A3)
3) Maximum allowable input current to DC/DC converters is 100A from the 48Vdc bus.

 

POWER DISTRIBUTION / CABLE ENTRY
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
Connection

2 x 48Vdc Battery (M6 bolt)
2 x  -48Vdc bulk (M6 bolt)
2 x DC/DC bulk (M6 bolt)
2 x Solar (MC-4 M+F)

 

CONTROL & MONITORING
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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 4U Powercore with DC/DC Shelf and Solar
Dimensions (WxHxD) tba
Weight tba
DESIGN STANDARDS
Model Eltek by Powerbox Flatpack S 5.4kW 4U Powercore with DC/DC Shelf and Solar
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
GA-Drawing-PB-CTES0304M-0-0-0-009
Eltek_Flatpack_S_5.4kW_4U_powecore_with_DC_DC_Shelf_and_Solar.pdf
GA_Drawing_PB-CTES0304M-0-0-0-009.pdf

Find the Right Model

Model Number System Power (W) Max. DC/DC Power (W) Max. Solar Power (W)
product variant PB-CTES0304M-0-0-0-009 5400W 2700W 6400W

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