The Vertiv (Emerson Network Power) R48-2000e3 and the Eltek Flatpack2 48/2000 HE are the two most widely deployed 2000 W rectifier modules in legacy -48V telecom DC plants. When a site needs a spare module or a system expansion, buyers frequently compare the two — this comparison breaks down the real differences using published specifications, so you can order the correct module the first time.
Quick Specification Comparison
| Item | Vertiv R48-2000e3 | Eltek Flatpack2 48/2000 HE (241115.105) | Eltek Flatpack2 48/2000 HE (241115.705) |
|---|---|---|---|
| Output power | 2000 W | 2000 W | 2000 W |
| Max output current | — | 41.7 A max | — |
| Output voltage | -48 VDC (42–58 VDC class) | 48 VDC (43.5–57.6 VDC adjustable) | 48/60 VDC wide-range output |
| Platform | e3 high-efficiency | HE high-efficiency | HE high-efficiency |
| Monitoring | CAN | CAN bus | CAN bus |
| Input frequency | 45–65 Hz | 45–65 Hz | 45–65 Hz |
| Hot-swap / parallel | Yes / Yes | Yes / automatic load sharing | Yes / automatic load sharing |
| Native system family | NetSure 531 / 731 | Flatpack2 systems (2U shelf hosts up to 4 modules) | Flatpack2 systems, 48 V and 60 V DC plants |
Product pages: Vertiv R48-2000e3 · Flatpack2 48/2000 HE (241115.105) · Flatpack2 48/2000 HE (241115.705)
Key Difference 1: The Ecosystem, Not the Wattage
Both modules deliver 2000 W at the 48V class with CAN monitoring and hot-swap parallel operation. The decisive difference is the system family each module belongs to. The R48-2000e3 was designed for Vertiv NetSure 531 and NetSure 731 power shelves — if your site runs a NetSure system, the R48-2000e3 (or its successors R48-3000E3 / R48-3500E3 where the shelf supports them) is the correct spare. The Flatpack2 48/2000 HE belongs to Eltek’s Flatpack2 ecosystem, where a compact 2U shelf hosts up to four modules with automatic load sharing.
Practical rule: order the module that matches the shelf, not the wattage. A 2000 W Eltek module will not communicate with a NetSure controller, and a Vertiv module will not share load in a Flatpack2 shelf — even though both are 2000 W, 48 V, CAN-based.
Key Difference 2: The 241115.105 vs 241115.705 Part Numbers
Eltek’s part numbering matters when ordering. The 241115.105 variant provides a standard 48 VDC output adjustable between 43.5 and 57.6 VDC. The 241115.705 variant is the wide-output version covering both 48 V and 60 V DC plants — if your site operates a 60 V legacy plant (common in older Central Office installations), the .705 is the module to specify. Ordering the wrong variant is one of the most common procurement errors with Flatpack2 spares.
Key Difference 3: Upgrade Path
If you are planning capacity expansion rather than a like-for-like spare:
- Vertiv path: NetSure 731 A41 systems accept the R48-3000E3 (3000 W, 62.5 A max) in the same shelf family, raising per-slot power by 50% without changing the controller.
- Eltek path: Flatpack2 shelves accept the Flatpack2 48/3000 HE (241119.105 / 241119.903) with 80–300 VAC class wide input and DC input support on the .903 variant.
Both upgrade paths keep the existing shelf and distribution — verify slot power rating and controller firmware compatibility with your supplier before ordering.
Availability from BS Comtec
BS Comtec stocks both product lines from Singapore, MOQ from 1 piece, dispatch within 24–48 hours for in-stock items. Send us your shelf model and the nameplate part number — we will confirm the exact module variant, provide datasheets, and quote freight to your site.
Can the Vertiv R48-2000e3 replace the Eltek Flatpack2 48/2000 HE (or vice versa)?
No — not directly. Both are 2000 W, 48 V class, CAN-monitored modules, but they belong to different system families with different mechanical footprints and controller protocols. The correct spare is the module matching your existing shelf: R48-2000e3 for NetSure 531/731 systems, Flatpack2 48/2000 HE for Eltek Flatpack2 shelves.
What is the difference between Eltek part numbers 241115.105 and 241115.705?
The 241115.105 provides a standard 48 VDC output (43.5–57.6 VDC adjustable). The 241115.705 is the wide-output variant covering both 48 V and 60 V DC plants. Check your plant voltage before ordering — 60 V legacy sites require the .705.
Can I upgrade a NetSure 731 shelf from 2000 W to 3000 W modules?
The NetSure 731 A41 family was designed around the R48-3000e3 (3000 W, 62.5 A max), so expansion within the same shelf family is possible. Verify your shelf’s slot power rating and controller firmware before mixing or upgrading rectifier capacities.
Does BS Comtec supply both Vertiv and Eltek rectifier modules?
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, with worldwide shipping and datasheets on request.