ABB DSSR 120 48990001-LH Power Supply Unit

Applications

The ABB DSSR 120 48990001-LH power supply unit is designed for industrial automation and control systems requiring stable, regulated DC power distribution. It is commonly used in:

• ABB Advant OCS distributed control systems
• Industrial process automation and monitoring platforms
• Power distribution within control cabinet architectures
• Legacy ABB system modules requiring auxiliary DC supply
• High-reliability industrial environments with continuous operation

This unit ensures consistent and clean power delivery to sensitive control electronics, helping maintain system stability and operational safety.

Advantages

• Stable DC power output for critical control systems
• Industrial-grade design for continuous-duty operation
• High reliability in harsh electrical environments
• Efficient power regulation with low energy loss
• Proven ABB architecture for long lifecycle systems

Technical FAQs

1. What is the main function of this power supply unit?
   It provides regulated DC power for ABB control and automation systems.
2. Where is it typically used?
   It is used in ABB Advant OCS and similar industrial control platforms.
3. Is it an AC or DC input device?
   It is designed for DC-based system power architectures.
4. What does it power in the system?
   It supplies power to control modules, I/O systems, and communication boards.
5. Is it suitable for continuous operation?
   Yes, it is designed for 24/7 industrial environments.
6. Does it include protection features?
   Yes, it typically includes overload and short-circuit protection.
7. Can it be used in modern ABB systems?
   It is mainly intended for legacy ABB Advant systems.
8. Does it require configuration?
   No configuration is required; it operates as a hardware power module.
9. Is cooling required?
   Standard cabinet ventilation is sufficient for normal operation.
10. Can it be replaced individually?
    Yes, but system shutdown is required before replacement.