Excellent EMC Performance
Lower interference and excellent susceptibility
Modular Rectifier
ETR Series (ETR3048)
Rectifiers & Battery Chargers (DC UPS)
Modular Rectifiers/Battery Chargers (DC UPS)
- Modular SMPS Technology
- 3 & 1 Phase Configurable
- Hot-Swap
- 3000W per Module
- In-Built SNMP
ENETEK Modular Battery Chargers deliver advanced, high-efficiency DC power for telecom, industrial, and energy applications that demand reliability and flexibility. Designed with fully digital control and hot-swappable modular architecture, these chargers ensure continuous operation and seamless maintenance without system downtime.
- Output Current (Maximum)
- 62.5A @ 48Vdc
- Peak Efficiency
- >96%
- MTBF @ 25°C
- > 300,000hrs
- Operating Temperature
- -40°C to +75°Cde-rates above 55°C
Product Overview
Built for efficiency, durability, and smart performance, the ETR Series offers up to 96% efficiency, front-to-back airflow cooling, and wide operating temperature tolerance, ensuring dependable performance even in harsh environments. With excellent EMC compliance and scalable configuration options, the ENETEK ETR1524 and ETR3048 chargers provide stable, intelligent, and energy-efficient power conversion — the perfect solution for mission-critical DC systems where uptime and performance matter most.
Their wide input voltage range (85–305 VAC) and compact, high-density design make them ideal for both centralized and distributed power systems.
Technical Highlights
- Cutting-edge fully digital control for improved reliability
- Highly efficient operation with peak efficiency up to 97%
- Modular, scalable, and hot-swappable design for flexible installation
- High power density (up to 9000W in 1U height) for space optimization
- Wide input voltage range (85Vac to 305Vac) for demanding grid conditions
- Front-to-back airflow with temperature-regulated cooling fans
- Wide operating temperature range (-40°C to +75°C) for harsh climates
- Compliant with global standards: CE, RoHS, EN/IEC 62368-1, and ETSI EN 300 386
Key features
Technical specifications
The table below reproduces the specifications for the single ETR 3048 model covered by the datasheet, part number 381040.100 (Rev.1.1), as published.
| Model | 381040.100 |
|---|---|
| Capacity | 3000W |
| INPUT | |
| Voltage Range (AC) | 85Vac to 305Vac (Nominal @ 185Vac to 275Vac) |
| Voltage Range (DC) | 100Vdc to 305Vdc (Nominal @ 210Vdc to 275Vdc) |
| Frequency | 45Hz to 66Hz |
| Maximum Input Current | Max 18Arms @ 185Vac (full load) |
| Power Factor | ≥0.99 @ rated input and ≥50% load |
| Input Protection | Varistors for transient protection, Mains Fuse for both input lines Shutdown @ > 305Vac with hysteresis |
| DC OUTPUT | |
| Output Voltage | 53.5Vdc (adjustable 43Vdc to 58Vdc) |
| Output Power (Maximum) | 3000W @ nominal input |
| Output Current (Maximum) | 62.5A @ 48Vdc with nominal input |
| Peak Efficiency | >96% |
| Current Sharing | ≤±5% of max current from 20% to 100% load |
| Static Voltage Regulation | ≤±0.6% from 10% to 100% load |
| Dynamic Voltage Regulation | ≤±5% for 10%-90% or 90%-10% load variation, regulation time <50ms |
| Hold Up Time | >20ms; output voltage >43.5Vdc @ 1500W |
| Ripple and Noise | ≤150mVp-p, 20MHz bandwidth ≤2mVrms psophometric |
| Output Protection | Overvoltage shutdown; hot plug-in, inrush current limiting; high temperature protection; short circuit proof |
| CONTROL and MONITORING | |
| Rectifier Alarm and Signaling | High & low mains shutdown, high temperature shutdwon, rectifier failure, overvoltage shutdown, fan failure, communication failure |
| Visual Indications | Alarms - RED Warning - YELLOW Normal operation - GREEN |
| OTHER SPECIFICATIONS | |
| Isolation | Input to Output: 3.0kVac, Input to Earth: 1.5kVac, Output to Earth: 0.5kVdc |
| Cooling | Fan-cooled, front to back airflow |
| Fan Speed | Regulated by temperature and output power |
| MTBF | > 300,000 hrs @ 25oC |
| ENVIRONMENTAL | |
| Operating Temperature Range | -40oC to +75oC (de-rates above 55°C) |
| Storage Temperature Range | -40oC to +85oC |
| Relative Humidity | Operating: 5% to 95% RH non-condensing Storage: 0% to 99% RH non-condensing |
| Acoustic Noise | ≤58dB @ full load, 25oC |
| PHYSICAL | |
| Dimensions WxDxH (mm) | 108 x 325 x 41 (1U) |
| Net Weight (kg) | ≤1.7 |
| DESIGN STANDARDS | |
| Electrical Safety | EN/IEC62368-1 |
| EMC | ETSI EN 300 386 V2.1.1, EN61000-6-1/-2/-3/-4 |
| AC Harmonics / AC Flicker & Fluctuations | EN61000-3-2 / EN61000-3-3 |
| Others | CE, RoHS compliant |
Due to continuous product development, specifications are subject to change without prior notice
Frequently asked questions
Answers taken from the ETR Series (ETR3048) datasheet.
What is the output power and current rating of the ENETEK ETR 3048 rectifier module?
Each ETR 3048 module has a capacity of 3000W at nominal input and delivers a maximum output current of 62.5A at 48Vdc with nominal input. The nominal output voltage is 53.5Vdc.
What input voltage range does the ETR 3048 rectifier accept?
The ETR 3048 accepts 85Vac to 305Vac (nominal @ 185Vac to 275Vac) at 45Hz to 66Hz, and also runs from 100Vdc to 305Vdc (nominal @ 210Vdc to 275Vdc). Input protection includes varistors for transient protection, a mains fuse on both input lines, and shutdown @ > 305Vac with hysteresis.
How efficient is the ETR 3048 rectifier module?
Peak efficiency is >96%, and the module efficiency curve printed on the datasheet marks a peak of 97% at 50% load. Power factor is ≥0.99 at rated input and ≥50% load.
What is the operating temperature range of the ETR 3048?
The ETR 3048 operates from -40°C to +75°C, de-rating above 55°C, and stores at -40°C to +85°C. Operating relative humidity is 5% to 95% RH non-condensing, and acoustic noise is ≤58dB at full load, 25°C.
Is the ETR 3048 hot-swappable, and what alarms does it signal?
Yes — the module is modular, scalable and hot swappable, and its output protection covers hot plug-in and inrush current limiting alongside overvoltage shutdown, high temperature protection and short circuit proof operation. Rectifier alarm and signaling covers high & low mains shutdown, high temperature shutdwon, rectifier failure, overvoltage shutdown, fan failure and communication failure, indicated by RED for alarms, YELLOW for warning and GREEN for normal operation.
Which standards is the ENETEK ETR 3048 compliant with?
Electrical safety is to EN/IEC62368-1, EMC to ETSI EN 300 386 V2.1.1 and EN61000-6-1/-2/-3/-4, and AC harmonics / AC flicker & fluctuations to EN61000-3-2 / EN61000-3-3. The module is CE and RoHS compliant.
Documentation & downloads
Download the latest documentation for the ETR3048 Series. Files are provided in their current revision; contact us if you need a previous version or a localised translation.
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Download
Power Module Datasheet
Full technical specifications, and product features including all the options.
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Download
Power Module User's Manual
Step-by-step installation instructions, menu details, and operating procedures.
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Download
PC & Monitoring Software
Computer Program or Programs helps you to monitor or set the unit.
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Download
Controller User's Manual
Additional documentation that might be involved with this series.
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