The Vertiv R48-3000E3 and the Eltek (Delta Electronics) Flatpack2 48/3000 HE are the two most requested 3000 W rectifier modules for -48V telecom DC power plants. Both are hot-swappable, CAN-monitored high-efficiency modules, but they differ in input window, part-number variants and native system ecosystem. This guide compares them with published specifications so procurement teams can order the correct spare or expansion module the first time.
Quick Specification Comparison
| Item | Vertiv R48-3000E3 | Eltek Flatpack2 48/3000 HE (241119.105) | Eltek Flatpack2 48/3000 HE (241119.903) |
|---|---|---|---|
| Output power | 3000 W | 3000 W | 3000 W |
| Max output current | 62.5 A | — | — |
| Output voltage | -48 VDC (42–58 VDC adjustable, 53.5 VDC default) | 48 VDC (adjustable) | 53.5 VDC default output |
| Platform | e3 high-efficiency | HE high-efficiency | HE high-efficiency |
| AC input window | Wide-range 3-phase/single-phase class | 85–300 VAC class wide input | 80–300 VAC plus DC input support |
| Input frequency | 45–65 Hz | 45–65 Hz | 45–65 Hz |
| Monitoring | CAN | CAN bus | CAN bus |
| Hot-swap / parallel | Yes / Yes | Yes / automatic load sharing | Yes / automatic load sharing |
| Native system family | NetSure 731 A41 / A91 | Flatpack2 shelves and cabinets | Flatpack2 shelves, long battery feed runs |
Product pages: Vertiv R48-3000E3 · Flatpack2 48/3000 HE (241119.105) · Flatpack2 48/3000 HE (241119.903)
Ecosystem Compatibility: The Deciding Factor
Rectifier modules are not freely interchangeable between brands. The R48-3000E3 is the standard 3 kW module of the Vertiv NetSure 731 family: it slots into NetSure 731 A41 and A91 shelves under M225 or M830B controller supervision. The Flatpack2 48/3000 HE belongs to Eltek’s Flatpack2 ecosystem — 2U shelves, Compact Power Systems and the Smartpack2 controller line. Mixing modules from one brand into the other brand’s shelf will not work: shelf guides, CAN protocol and controller firmware are proprietary.
Rule of thumb: identify your existing shelf first, then order the matching module family. If you are building a new plant, the choice between NetSure 731 and Flatpack2 shelves usually follows your installed base, local service coverage and controller preference.
The Two Flatpack2 3000 W Variants: 241119.105 vs 241119.903
Eltek ships the 3000 W HE module in two part numbers. The 241119.105 is the standard variant with an adjustable 48 VDC output and an 85–300 VAC input class. The 241119.903 defaults to 53.5 VDC output — the telecom float voltage — and additionally supports DC input, which makes it attractive for hybrid sites with a DC bus or solar-rectifier front end. The 53.5 VDC default also suits long battery feed runs where voltage drop on the cable must be compensated.
When ordering, check the exact part number printed on your existing modules; the two variants look identical from the outside but behave differently at the output terminals.
Input Window and Generator Compatibility
Both families accept wide AC input, but the detail matters on generator-fed sites. The Flatpack2 .903 variant accepts 80–300 VAC and DC input, tolerating sagging generator output better than narrower-window designs. The R48-3000E3 in NetSure 731 A41 shelves runs an 80–300 VAC wide-range input at system level, with strong generator compatibility documented by Vertiv. For sites with unstable grids in Africa, the Middle East or South America, either family works — verify the shelf-level input rating, not just the module.
Which One Should You Order?
- Existing NetSure 731 / NetSure 531 plant → R48-3000E3 (62.5 A max, e3 platform).
- Existing Flatpack2 shelf or Smartpack2 controller → Flatpack2 48/3000 HE, matching your installed part number (.105 standard, .903 for 53.5 VDC default or DC-input hybrid sites).
- New build with mixed Huawei/Vertiv/Eltek estate → standardize on one ecosystem per site to keep spares simple; BS Comtec can supply cross-reference guidance.
For a broader module map, see the 48V rectifier module cross-reference chart, the R48-2000e3 vs Flatpack2 48/2000 HE comparison, and the 48V telecom rectifier selection guide.
Are R48-3000E3 and Flatpack2 48/3000 HE interchangeable?
No. They use different mechanical footprints, shelf guides and CAN protocols. R48-3000E3 fits Vertiv NetSure 731 A41/A91 shelves; Flatpack2 48/3000 HE fits Eltek Flatpack2 shelves with Smartpack2 control. Order the module matching your shelf brand.
What is the difference between Eltek 241119.105 and 241119.903?
The 241119.105 is the standard 48 VDC adjustable-output variant with 85–300 VAC input. The 241119.903 defaults to 53.5 VDC output and supports DC input in addition to 80–300 VAC, making it the right choice for hybrid DC-bus sites and long battery feed runs.
Can R48-3000E3 replace R48-2000e3 in the same shelf?
Usually yes within the NetSure 731 family — both are e3-platform CAN modules — but verify your shelf slot power rating and controller firmware before mixing 2000 W and 3000 W modules in one plant.
Does BS Comtec supply both Vertiv and Eltek 3000 W rectifiers?
Yes. BS Comtec supplies Huawei, Vertiv (Emerson), Eltek, ZTE and Delta 48V rectifier modules and embedded DC power systems from Singapore stock, MOQ from 1 piece, dispatch within 24–48 hours for in-stock items, datasheets and test reports on request.