Modular DC power systems
FO-DC-48 series 19″ and embedded −48 V DC power systems from 30 A to 800 A, scaling in 50 A / 75 A module steps. Hot-swap rectifiers, N+1 redundancy and integrated distribution power telecom cabinets, BTS and edge sites from a single 1U embedded unit up to a full 19″ subrack.
Key applications: telecom cabinets and BTS, edge and access sites, enterprise comms rooms, small data centers.
Why modular DC
Modular hot-swap rectifiers
50 A and 75 A modules (RM4850 / RM4875) with N+1 redundancy, hot-swap replacement and ≥ 96% peak efficiency.
1U embedded to 19″ subrack
From a 1U embedded system (FO-DC-4830) up to 19″ subracks, scaling to 800 A in 50 A / 75 A module steps.
Integrated distribution
DC distribution, LLVD / BLVD battery contactors and field supervision built into the frame.
Smart monitoring
MCU-SM32Z controller with RS232 / RS485 and SNMP, dry-contact alarms and remote supervision.
Capacity line-up
| Model | Nominal output current | Format |
|---|---|---|
| FO-DC-4830 | 30 A | 1U embedded system |
| FO-DC-4860 | 60 A | Embedded / subrack |
| FO-DC-4875 | 75 A | Embedded / subrack |
| FO-DC-48100 | 100 A | 19″ subrack |
| FO-DC-48120 | 120 A | 19″ subrack |
| FO-DC-48200 | 200 A | 19″ subrack |
| FO-DC-48250 | 250 A | 19″ subrack |
| FO-DC-48400 | 400 A | 19″ subrack |
| FO-DC-48600 | 600 A | 19″ subrack / cabinet |
| FO-DC-48750 | 750 A | 19″ subrack / cabinet |
| FO-DC-48800 | 800 A | 19″ subrack / cabinet |
Model numbers encode nominal 48 V output current. Selected ratings are also available as Multi-Stage (FO-DC-48400) and 4 kW-module builds (FO-DC-48400-3, 48600-2, 48750). Per-model cabinet dimensions and options are confirmed on the official datasheet.
System & electrical
| Parameter | Value |
|---|---|
| System voltage | 48 V DC nominal (−48 V) |
| Nominal output current | 30–800 A |
| Rectifier modules | RM4850 (50 A) / RM4875 (75 A), hot-swap, N+1 |
| Module power factor | ≥0.99 |
| Module MTBF | ~100,000 h |
| AC input | 90–280 Vac single-phase; 85–300 Vac single- or three-phase (larger frames) |
| Peak efficiency | ≥96% |
| Controller | MCU-SM32Z, LCD, RS232 / RS485, SNMP, dry-contact alarms |
| Battery management | LLVD / BLVD disconnect, temperature-compensated charging, battery test |
| Protection | Class C SPD, input / output breakers, over- / under-voltage and over-temperature shutdown |
| DC distribution | Integrated DC load and battery distribution with LLVD / BLVD protection |
| Format | 1U embedded, 19″ subrack, cabinet |
Specifications reflect the FIBER OCEAN FO-DC-48 series datasheets. Exact ratings vary by model; regional configuration and options are confirmed per project.
More in DC Power Systems
Request a quote for FIBER OCEAN modular DC power
Share your load, site and redundancy requirements. Our engineers respond with a tailored configuration and pricing.