Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with Solar
The Eltek by Powerbox Flatpack S 5.4 kW 3U Powercore with Solar is a robust, high-efficiency DC power system designed for hybrid power applications in telecom, industrial, and security environments. It’s ideal for time-critical projects requiring dependable DC power and solar integration all in one compact 3U unit. This 3U PowerCore configuratio...
Read MoreThe Eltek by Powerbox Flatpack S 5.4 kW 3U Powercore with Solar is a robust, high-efficiency DC power system designed for hybrid power applications in telecom, industrial, and security environments. It’s ideal for time-critical projects requiring dependable DC power and solar integration all in one compact 3U unit.
This 3U PowerCore configuration combines 3 × Flatpack S HE Rectifier Modules with 2 × Flatpack S Solar Modules (48 V / 3200 W each) to support hybrid grid and solar operation. It provides a nominal –48 V DC output (–42 to –58.6 V range) and a maximum current capacity of up to 110 A, ensuring reliable, energy-efficient power delivery even in off-grid or remote sites.
The integrated Smartpack S controller enables full supervision, energy optimization, and remote monitoring, allowing seamless control of both AC and solar inputs.
Typical Applications
Telecom & Networks
• Remote base stations and microwave links
• Rural broadband and fixed-line networks
• Off-grid communications infrastructure
Industrial & Utilities
• Substations and SCADA systems
• Instrumentation in energy and resource sectors
• Utility monitoring and telemetry systems
Security & Public Safety
• Off-grid CCTV and surveillance towers
• Solar-powered alarm systems
• Emergency communications and field networks
Why Choose Flatpack S?
• 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 3U design
• Reliable: Wide temperature range (-40 °C to +65 °C) and industrial-grade components.
• Solar-Ready: Integrated support for solar hybrid power systems
• Eltek S platform for easy system expansion.
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 solar strings with MPPT high efficiency converters with front interfacing MC4 connectors.
- Built to suit your needs – inverter options available on request.
Specifications
| MANUFACTURER PART NUMBER | ||||
|---|---|---|---|---|
| Model | Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with Solar | |||
| Part Number | PB-CTES0303S-0-0-008 | |||
| Height (RU) | 3U | |||
| Module slots (not supplied) | 3 x Flatpack S HE Rectifier Modules 2 x Flatpack 2 Solar Modules |
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| Compatible AC/DC Rectifiers¹⁾ | 241122.105 Flatpack S AC/DC Rectifier 48/1000 HE 241122.125 Flatpack S AC/DC Rectifier 48/1800 HE |
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| 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 3U Powercore with 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 3U Powercore with 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 3U Powercore with Solar | ||
| Plug in breakers | 2 x 80A Circuit breakers | ||
| 48V LOAD DATA | ||||
|---|---|---|---|---|
| Model | Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with 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 | |||
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2) Other configurations available. Please consult with your Powerbox representative. |
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| POWER DISTRIBUTION / CABLE ENTRY | |||
|---|---|---|---|
| Model | Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with Solar | ||
| Connection |
2 x 48Vdc Battery (M6 bolt) |
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| CONTROL & MONITORING | ||||
|---|---|---|---|---|
| Model | Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with 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 3U Powercore with Solar | ||
| Dimensions (WxHxD) | tba | ||
| Weight | tba | ||
| DESIGN STANDARDS | ||||
|---|---|---|---|---|
| Model | Eltek by Powerbox Flatpack S 5.4kW 3U Powercore with 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 |
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| 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 |
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Technical Drawings
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.
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