DC Power Systems and Battery Chargers

Delta Eltek Flatpack S 48Vdc Rectifier Module

Designed for the demanding needs of modern telecom infrastructure, the Eltek Flatpack S 48Vdc Rectifier delivers exceptional power density, reliability, and flexibility — all within a remarkably compact 1U form factor. Whether you're deploying power at a remote cell site, a fiber distribution hub, or a broadband cabinet, the Flatpack S offers a scalable and space-efficient solution built for performance and longevity.

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Features

  • Compact Powerhouse: Measuring just 217mm deep and weighing under 850g, the Flatpack S fits effortlessly into tight spaces, making it ideal for small to medium-sized telecom installations with limited rack depth.
  • Scalable Design: Available in 1000W and 1800W configurations, the Flatpack S can be deployed in 1U (up to 5.4kW) or 2U (up to 9kW) rack systems to match your exact power requirements.
  • High Efficiency: Operating at up to 96% efficiency, this rectifier reduces energy loss and cooling requirements, lowering operating costs and enhancing sustainability.
  • Intelligent Monitoring: Integrates seamlessly with the Smartpack S controller, offering real-time system status, alarms, and remote management over Ethernet.
  • Hot-Pluggable & Redundant: Enables fast replacement or expansion without system shutdown, ensuring continuous operation and simplified maintenance.
  • Robust Protection: Built-in ORing FETs, overvoltage shutdown, thermal protection, and short-circuit proofing guarantee safe and stable performance in harsh conditions.
Specifications
MANUFACTURER PART NUMBER
Model Flatpack S 48/1000HE Rectifier Module Flatpack S 48/1800HE Rectifier Module
Manufacturer Part Number 241122.105 241122.125
INPUT DATA
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Nom. Input Voltage Range (Vac / Vdc) 185...250Vac / 185...250Vdc¹ 195...277Vac / 195...250Vdc¹
Operating Input Voltage Range (Vac / Vdc) 85...300Vac / 85...250Vdc¹ 85...305Vac / 85...250Vdc¹
Current (Max.) @ Nom. Input, Full Load (Arms) 5.9A RMS 9.9A RMS
Frequency (Hz) 45...66Hz / 15...18.5Hz² / 0Hz¹ 45...66Hz / 0Hz¹
Power Factor > 0.99 at 50% Load or More
Protection Fuse in L & N, Varistor, Shutdown when input voltage is out of operating range
Notes ¹ DC input only allowed when up-stream breaker is rated for the applicable DC input voltage and has a maximum current rating of 32A 
OUTPUT DATA
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Output Voltage - Default (Vdc) 53.5Vdc
Output Voltage - Adjustable Range (Vdc) 43.5...57.6Vdc
Max. Power @ Nominal Input (W) 1000W 1800W
Power @ 85Vac Input (W) 420W 700W²
Max. Current @ Nominal Input (A) 20.9A @ Vout < 48Vdc 37.5A @ Vout < 48Vdc
Hold Up Time, Maximum Output Power >20ms; output voltage > 41 Vdc >10ms; output voltage > 42 Vdc
Current Sharing (10-100% Load) ±5% of maximum current from 10 to 100% load
Static Voltage Regulation (10 - 100% Load) ±0.5%
Dynamic Voltage Regulation ±5.0% for 10-90% or 90-10% load variation, regulation time < 50ms
Ripple < 150 mVpp , 30 MHz bandwidth
Protection ORing FET; Short Circuit Proof; High Temperature Protection; Over voltage Shutdown
Efficiency 95.50% 96%
Note ² Power derating 415W@ 15Hz and 450W@16 2/3 Hz
DISPLAY / ALARMS
Alarms: Via Red LED: Low / high input voltage shutdown, High / low temperature shutdown, Rectifier Failure, Overvoltage shutdown on output, Fan failure, Low output voltage alarm, CAN bus failure
Warnings: Via Yellow LED: Rectifier in power de-rate mode, Remote output current limit activated, Input voltage out of range, flashing at overvoltage, Loss of CAN communication with controller
Normal Operation: Indicated Via Green LED
ENVIRONMENTAL
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Cooling Fan Assisted
MTBF (Telcordia SR-332 Iss.I method III (a)) >315 000 (@ T ambient : 25 °C) >300 000 (@ T ambient : 25 °C)
Operating Temp. (5-95% RH n.cond. hum.) -40 to + 85°C
Operating Temperature (°C)
0...45°C: 100% Rated Power (1000W)
> 45°C: D-Rated to 600W @ 85°C
0...55°C: 100% Rated Power (1800W)
> 55°C: D-Rated to 1000W @ 85°C
Storage Temperature (°C) -40 to +85°C; Humidity: 0 - 99% RH non-condensing
Altitude 2000m 4000m
MECHANICAL
Dimensions [WxHxD] 72 x 41.5 x 217mm
Weight < 850g
DESIGN STANDARDS
Isolation 4.0 kVdc - Input to Output; 2.5 kVdc - Input to Earth; 710 Vdc - Output to Earth 5.0 kVdc - Input to Output; 2.5 kVdc - Input to Earth; 710 Vdc - Output to Earth
Electrical safety EN 62368-1:2020+A11:2020, IEC 62368-1:2018, UL 62368-1:2019 IEC 60950-1:2013
EMC EN 61000-6-1:2019, -6-2:2019, - 6-3:2007 + A1:2011, - 6-4:2019 IEC 61000-6-5:2015+Cor1:2017, EN 50121 -4:2016/A1:2019, -5:2017/A1:2019 ETSI EN 300 386 V.2.1.1, FCC CFR47 part 15B:2020 (parts of)
Environment ETSI EN 300 019: 2-1 (Class 1.2) & 2-2 (Class 2.3) 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 EU 2015/863 (RoHS), 2012/19/EU (WEEE), IEC 63000:2018
Marine DNVGL-CG-0339³
Note ³ Only valid for pn 241122.105M and 241122.125M 
Downloads
datasheet-flatpack_s_48v_1000W_HE_1800W_HE_rectifiers.pdf
MANUFACTURER PART NUMBER
Model Flatpack S 48/1000HE Rectifier Module Flatpack S 48/1800HE Rectifier Module
Manufacturer Part Number 241122.105 241122.125
INPUT DATA
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Nom. Input Voltage Range (Vac / Vdc) 185...250Vac / 185...250Vdc¹ 195...277Vac / 195...250Vdc¹
Operating Input Voltage Range (Vac / Vdc) 85...300Vac / 85...250Vdc¹ 85...305Vac / 85...250Vdc¹
Current (Max.) @ Nom. Input, Full Load (Arms) 5.9A RMS 9.9A RMS
Frequency (Hz) 45...66Hz / 15...18.5Hz² / 0Hz¹ 45...66Hz / 0Hz¹
Power Factor > 0.99 at 50% Load or More
Protection Fuse in L & N, Varistor, Shutdown when input voltage is out of operating range
Notes ¹ DC input only allowed when up-stream breaker is rated for the applicable DC input voltage and has a maximum current rating of 32A 
OUTPUT DATA
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Output Voltage - Default (Vdc) 53.5Vdc
Output Voltage - Adjustable Range (Vdc) 43.5...57.6Vdc
Max. Power @ Nominal Input (W) 1000W 1800W
Power @ 85Vac Input (W) 420W 700W²
Max. Current @ Nominal Input (A) 20.9A @ Vout < 48Vdc 37.5A @ Vout < 48Vdc
Hold Up Time, Maximum Output Power >20ms; output voltage > 41 Vdc >10ms; output voltage > 42 Vdc
Current Sharing (10-100% Load) ±5% of maximum current from 10 to 100% load
Static Voltage Regulation (10 - 100% Load) ±0.5%
Dynamic Voltage Regulation ±5.0% for 10-90% or 90-10% load variation, regulation time < 50ms
Ripple < 150 mVpp , 30 MHz bandwidth
Protection ORing FET; Short Circuit Proof; High Temperature Protection; Over voltage Shutdown
Efficiency 95.50% 96%
Note ² Power derating 415W@ 15Hz and 450W@16 2/3 Hz
DISPLAY / ALARMS
Alarms: Via Red LED: Low / high input voltage shutdown, High / low temperature shutdown, Rectifier Failure, Overvoltage shutdown on output, Fan failure, Low output voltage alarm, CAN bus failure
Warnings: Via Yellow LED: Rectifier in power de-rate mode, Remote output current limit activated, Input voltage out of range, flashing at overvoltage, Loss of CAN communication with controller
Normal Operation: Indicated Via Green LED
ENVIRONMENTAL
Model Flatpack S 48/1000HE Rectifier Module  Flatpack S 48/1800HE Rectifier Module
Cooling Fan Assisted
MTBF (Telcordia SR-332 Iss.I method III (a)) >315 000 (@ T ambient : 25 °C) >300 000 (@ T ambient : 25 °C)
Operating Temp. (5-95% RH n.cond. hum.) -40 to + 85°C
Operating Temperature (°C)
0...45°C: 100% Rated Power (1000W)
> 45°C: D-Rated to 600W @ 85°C
0...55°C: 100% Rated Power (1800W)
> 55°C: D-Rated to 1000W @ 85°C
Storage Temperature (°C) -40 to +85°C; Humidity: 0 - 99% RH non-condensing
Altitude 2000m 4000m
MECHANICAL
Dimensions [WxHxD] 72 x 41.5 x 217mm
Weight < 850g
DESIGN STANDARDS
Isolation 4.0 kVdc - Input to Output; 2.5 kVdc - Input to Earth; 710 Vdc - Output to Earth 5.0 kVdc - Input to Output; 2.5 kVdc - Input to Earth; 710 Vdc - Output to Earth
Electrical safety EN 62368-1:2020+A11:2020, IEC 62368-1:2018, UL 62368-1:2019 IEC 60950-1:2013
EMC EN 61000-6-1:2019, -6-2:2019, - 6-3:2007 + A1:2011, - 6-4:2019 IEC 61000-6-5:2015+Cor1:2017, EN 50121 -4:2016/A1:2019, -5:2017/A1:2019 ETSI EN 300 386 V.2.1.1, FCC CFR47 part 15B:2020 (parts of)
Environment ETSI EN 300 019: 2-1 (Class 1.2) & 2-2 (Class 2.3) 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 EU 2015/863 (RoHS), 2012/19/EU (WEEE), IEC 63000:2018
Marine DNVGL-CG-0339³
Note ³ Only valid for pn 241122.105M and 241122.125M 
datasheet-flatpack_s_48v_1000W_HE_1800W_HE_rectifiers.pdf

Find the Right Model

Model Number Input Voltage (Vac) Output Voltage (Vdc) Max. Output Power (W / kW)
product variant Flatpack S 48V /1000HE Nom. 185...250Vac / 185...250Vdc 53.5Vdc (Adj. 43.5...57.6Vdc) 1000W
product variant Flatpack S 48/1800HE Nom. 195...277Vac / 195...250Vdc 53.5Vdc (Adj. 43.5 - 57.6Vdc) 1800W

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