The ABB DSSR122 48990001-NK operates as a precision DC voltage regulator for industrial control applications. This power supply unit accepts 24 VDC input and delivers stable 5 VDC output for sensitive electronics. Engineers use this module to power logic circuits, sensors, and I/O devices reliably. Its compact form factor simplifies installation within crowded cabinet environments.
Technical Specifications
| Specification | Details |
|---|---|
| Dimensions | 95 mm x 48 mm x 35 mm |
| Weight | 0.22 kg |
| Input Voltage | 24 VDC nominal (18 – 30 VDC operating range) |
| Output Voltage | 5 VDC ±1% regulation |
| Output Current | 3 A maximum |
| Output Power | 15 Watts |
| Efficiency | 85% typical at full load |
| Ripple & Noise | 30 mV peak-to-peak maximum |
| Line Regulation | ±0.2% over entire input range |
| Load Regulation | ±0.5% from 0% to 100% load |
| Protection Features | Overcurrent, short circuit, overtemperature, reverse polarity |
| Isolation | Non-isolated (DC common connected) |
| Connectors | Pluggable screw terminals, 2.5 mm² wire |
| Indicators | Green LED for output present |
| Cooling | Natural convection |
| Operating Temperature | -20°C to 65°C |
| Storage Temperature | -40°C to 85°C |
| MTBF | 600,000 hours at 40°C |
| Article Number | 48990001-NK |
Precise Voltage Regulation for Critical Circuits
The DSSR122 maintains 5 VDC output within ±1% despite fluctuating input voltages or load changes. Its advanced regulation circuitry responds instantly to transient loads without voltage droop. This stability proves essential for powering microprocessors and analog measurement circuits. The module therefore ensures consistent performance of sensitive control electronics.
Robust Protection and Reliability Features
Industrial environments expose power supplies to various electrical hazards and abnormal conditions. The DSSR122 includes reverse polarity protection that prevents damage from incorrect wiring connections. Overcurrent limiting protects both the supply and connected loads during fault conditions. Thermal shutdown activates at 85°C, with automatic recovery when temperatures normalize.
Efficient Power Conversion in Compact Package
This ABB regulator achieves 85% efficiency, minimizing heat generation within control panels. Its efficient design allows operation up to 65°C ambient without performance derating. You can therefore mount the DSSR122 in warm machinery areas or densely packed cabinets. The small 95 mm x 48 mm footprint occupies minimal DIN rail space.
Simple Integration and Status Indication
The DSSR122 48990001-NK features pluggable screw terminals for quick installation and replacement. Green LED indication confirms output presence at a glance for troubleshooting convenience. Clear terminal labeling prevents wiring errors during initial installation or maintenance. The module mounts on standard TS-35 DIN rail without additional hardware requirements.
Details
| Weight | 0.91 kg |
|---|---|
| Dimensions | 110 × 55 × 90 mm |
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