ARIS Power DCU300M3648S DC-UPS / Battery Charger
The DCU300M3648S is a 300W DIN-rail mounted DC-UPS designed to provide uninterrupted power to critical DC loads in industrial and infrastructure applications. It integrates an AC/DC power supply, intelligent battery charger, and backup controller in a single compact unit. The unit accepts a wide input range of 85–305 Vac or 110–420 Vdc and deliv...
Read MoreThe DCU300M3648S is a 300W DIN-rail mounted DC-UPS designed to provide uninterrupted power to critical DC loads in industrial and infrastructure applications. It integrates an AC/DC power supply, intelligent battery charger, and backup controller in a single compact unit.
The unit accepts a wide input range of 85–305 Vac or 110–420 Vdc and delivers a selectable 36 Vdc or 48 Vdc output, making it suitable for a broad range of DC systems.
Designed for high reliability applications, the DCU300M3648S features load-first dynamic power sharing, ensuring priority supply to the load while managing battery charging efficiently. It supports high inrush loads with up to 12 A continuous output and peak currents up to <20 A.
Advanced BattSafe battery management enables optimal battery performance and lifespan, with support for multiple chemistries including lead-acid, AGM, Li-ion, LiFePO₄ and NiCd/NiMH. The charger uses a 3-stage IUoU charging profile with recovery mode and adjustable charge current.
Comprehensive monitoring and control are available via Modbus communication (dual RJ45 ports), alongside local LED diagnostics and three voltage-free relay alarm outputs.
The unit is convection cooled and designed for operation in demanding environments from -25°C to +70°C.
Show Less
Features
- Input voltage range: 85-305Vac nominal operation or 110-420Vdc input.
- Output voltage: Selectable 36Vdc or 48Vdc.
- Output current: Rated 6A at 36Vdc or 5A at 48Vdc in power supply mode.
- Output power: 300W class DC-UPS / battery charger.
- All-in-one DC-UPS with integrated power supply, battery charger and backup functions.
- 3-stage charging curve (IUoU) with recovery charge.
- Adjustable maximum battery charging current.
- Selectable battery types including vented and sealed lead acid, AGM, Li-Ion, Li-PoFe and NiCd/Ni-MH.
- Low voltage disconnect and low voltage alarm thresholds.
- Manual battery start-up button with no mains.
- Battery life test: automatic every 2 hours in standby, or manual on push button.
- Modbus data link via dual RJ45 connector and 3 voltage-free relay contacts for remote alarms.
- Natural convection cooling.
- DIN-rail mounting.
Specifications
| INPUT | |
|---|---|
| Rated Input Voltage | 115/230/277Vac (range 85–305Vac) |
| Rated Input Voltage DC | 110/220Vdc (range 110–420Vdc) |
| Frequency Range | 50/60 Hz (range 47–440Hz) |
| Input Current (Typ.) | 2.8A (115Vac), 1.4A (230Vac) |
| Inrush Current (Typ. Cold Start) | 15A max |
| Setup, Rise Time Max | 1s |
| Recommended External Fuse/MCB | 10A, curve B |
| Load Output - Power Supply Mode (Mains ON & Battery OFF) | ||
|---|---|---|
| Voltage - Selectable by Dip Switch | 36Vdc | 48Vdc |
| Rated Current (IR) | 6A | 5A |
| Ripple / Noise | 80 mVpp | 80 mVpp |
| Short Circuit Protection | Yes | |
| Over Load Protection | Constant Current mode > 110% IR | |
| Over Voltage Protection | 70Vdc | |
| Load Output - Standby Mode (Mains ON & Battery ON) | ||
|---|---|---|
| Voltage Range - Automatic Set | 36–43.2Vdc | 48–57.6Vdc |
| Max Continuous Current (IR+IBATT) | 12A | 10A |
| Max Current for 30s | 15A | 15A |
| Max Current for 15s | 17.5A | 17.5A |
| Max Current for 5s | < 20A | < 20A |
| Load Output - Backup Mode (Mains OFF & Battery ON) | ||
|---|---|---|
| Voltage Range - Automatic Set¹ | 27.7–36Vdc | 37–48Vdc |
| Max Continuous Current (IR+IBATT) | 12A | 10A |
| Max Current for 60s | 15A | 15A |
| Max Current for 30s | 17.5A | 17.5A |
| Max Current for 5s | < 20A | < 20A |
| Time Buffering for Backup | 30 s up to ∞ | |
| Start from Battery with no mains (LVD overide) | Yes (via push button) | |
| Quiescent Current | < 90mA | |
| Signal Output/Input | |
|---|---|
| Standby / Backup | Change-over relay contact, M terminals |
| Common Fault | Change-over relay contact, F terminals |
| Rectifier failure | Change-over relay contact, S terminals |
| Full set of monitor and alarm visual signals | Flashing code on 3, Three-color LEDs |
| Modbus data link | Dual RJ45 connector |
| Climatic Data | |
|---|---|
| Operating Ambient Temperature (TA) | -25 up to +70°C |
| Relative Humidity, no condensation @ 25°C | max 95% |
| Storage Temperature | -40 up to +85°C |
| Cooling | Natural Convection |
| General Data | |
|---|---|
| Efficiency (Typ.) | >91% >91% |
| Temperature Derating Factor¹ | 2.5 %/°C, TA > 50°C |
| Altitude Derating Factor¹ | 0.5°C/100 m, above 2000 m |
| Insulation Voltage (In/Out) | 4 kVac |
| Insulation Voltage (In/PE) | 2 kVac |
| Insulation Voltage (Out/PE) | 500 Vdc |
| Insulation Resistance (500 V) | > 100 MΩ |
| Protection Class (EN/IEC 60529) | IP 20 |
| Pollution Degree Environment | 2 |
| Dimensions (W x H x D) | 80 x 130 x 126 mm |
| Weight | 0.9 kg |
| Commercial Data | |
|---|---|
| Weight per unit, including packing | 1.0 kg |
| Dimensions per unit, including packing | 85 x 138 x 134 mm |
| Volume per unit, including packing | 0.0014 m³ |
| Custom Tarif HS | 85044055 |
| Country of origin | Italy |
| Insulation Voltage (Out/PE) | 500 Vdc |
| Insulation Resistance (500 V) | > 100 MΩ |
| Protection Class (EN/IEC 60529) | IP 20 |
| Pollution Degree Environment | 2 |
| Dimensions (W x H x D) | 80 x 130 x 126 mm |
| Weight | 0.9 kg |
Warranty & Returns
Warranty periods vary by product. Please refer to the Powerbox Warranty Policy for the applicable coverage period against manufacturing defects from date of purchase. For returns and RMA requests, please visit our RMA support page or contact our support team directly.