# Eltek Flatpack S — 1U Compact 48V DC Power System

URL: https://www.promark.tr/en/products/eltek-flatpack-s
Category: Power & DC
Family: [Eltek DC Power System — Flatpack S 1U & Flatpack2 8kW](https://www.promark.tr/en/products/dc-power-rectifier)

Compact 48V DC power system in 262 mm depth, 1U high — fits in small infrastructure cabinets, used in small switches and branches. Smartpack S controller + 2-3 rectifiers (1000W or 1800W modules) + battery + load distribution in one 1U platform. Remote management over Ethernet.

## Key features

- 1U height × 262 mm depth — space-saving for shallow cabinets.
- Complete system: Smartpack S controller + rectifier(s) + battery distribution + load distribution.
- 2-rectifier (40A total) or 3-rectifier (100A total) configurations.
- Hot-pluggable rectifier — uninterrupted swap/add.
- Hot-pluggable controller — easy maintenance access.
- 1000W or 1800W Flatpack S HE rectifier modules.
- Wide input range: 100-250V AC, 45-66Hz, 1-phase or 2x1-phase; 3R 230VAC 3x1-phase or 230/400V 3-phase (Y).
- Smartpack S controller — advanced monitoring/control over Ethernet.
- 2R load options: 7×30A MCB drawer (optional LVLD) + 4×30A MCB front + 7×15A fuse front.
- 3R load options: 2×80A.
- Ideal for fast network deployment: telecom switches, FTTx, fiber, microwave.
- Rectifier replacement unit — refresh in older systems.
- Rear-side 2.5mm² terminal-block mains connection.

## Specifications

- **Type:** Compact 1U DC power system
- **Manufacturer:** Eltek
- **Height:** 1U
- **Depth:** 262 mm
- **Configurations:** 2R (40A) — CTOS0201.xxx • 3R (100A) — CTOS0301.xxx
- **Module power:** 1000W or 1800W (Flatpack S HE)
- **Input voltage:** 100-250V AC
- **Frequency:** 45-66 Hz
- **Input phases (2R):** 230VAC 1-phase or 2×1-phase
- **Input phases (3R):** 230VAC 3×1-phase or 230/400VAC 3-phase (Y)
- **Output:** -48V DC
- **Mains connection:** 2.5mm² terminal blocks (rear)
- **Load options (2R):** 7×30A MCB drawer (LVLD optional) + 4×30A MCB front + 7×15A fuse front
- **Load options (3R):** 2×80A
- **Controller:** Smartpack S (hot-plug, Ethernet port)
- **Hot-plug:** Rectifier + controller

## Use cases

- Small switch / branch office DC power infrastructure.
- FTTx / fiber location — telecom node with shallow cabinet.
- Distributed antenna system (DAS) — compact base.
- Microwave relay — tower-base DC power.
- Legacy rectifier replacement — upgrade in shallow cabinets.

## For a quote and BOM

https://www.promark.tr/en/contact · +90 312 544 0915 · destek@promark.tr