The ABB Bailey NPSI04 Input/Output Power Supply Module is a high-reliability power distribution component designed for the ABB Bailey INFI 90 / Net 90 Distributed Control System (DCS). It is responsible for delivering stable, regulated DC power to critical control modules, including processors, I/O cards, and communication interfaces.
In industrial automation systems where continuous operation is essential, power stability directly impacts control accuracy and system safety. The NPSI04 is engineered to provide clean and protected power with strong fault tolerance, making it a key foundation element in ABB Bailey control cabinets.
It is widely used in legacy DCS environments across power plants, refineries, and process industries that require uninterrupted automation performance.
Technical Specifications
| Parameter | Details |
|---|---|
| Product Type | Input/Output Power Supply Module |
| System Compatibility | ABB Bailey INFI 90 / Net 90 |
| Main Function | DC power generation and distribution |
| Output Voltage | +5 VDC, ±15 VDC (regulated system power) |
| Input Voltage | AC/DC wide-range industrial input |
| Protection Features | Overload, overvoltage, short-circuit protection |
| Cooling Method | Natural convection |
| Installation | Rack-mounted module |
| Operating Environment | Industrial control systems |
| Operating Duty | Continuous 24/7 operation |
The NPSI04 is designed to ensure stable DC power delivery within ABB Bailey control racks, supporting critical system modules without interruption.
Physical Dimensions & Weight
| Specification | Value |
|---|---|
| Dimensions (H × W × D) | 330 mm × 270 mm × 40 mm |
| Weight | ~10.4–10.9 kg |
Its solid industrial enclosure and rack-mounted structure provide strong mechanical stability and reliable thermal performance in control cabinet environments.
Recommended Related Models
- ABB Bailey NPSI03 Power Supply Module
- ABB Bailey NPSM01 Power Supply Monitoring Module
- ABB Bailey NPEP01 Power Entry Panel
- ABB Bailey NMFP01 Processor Module
- ABB Bailey NMMU02 Module Mounting Unit
These modules are typically combined with NPSI04 to build a complete ABB Bailey power and control system architecture.
Popular ABB Bailey Models
- NPSI04 Power Supply Module
- NPSI03 Power Supply Module
- NPSM02 Power Supply Module
- NMFC02 Controller Module
- NMFP01 Processor Module
These ABB Bailey products remain widely used in long-life industrial automation systems requiring stable power and control reliability.
