Overview: Engineered for Unwavering Power Integrity
The ABB DSSR 122 rack power supply stands as a cornerstone of reliability for demanding industrial control systems. We engineered this unit to deliver absolutely clean and stable 5V DC power, which is the lifeblood for sensitive automation electronics. Its robust Swedish design ensures continuous operation even in electrically noisy and harsh plant floor environments. Consequently, you can trust it to protect your critical PLCs, controllers, and I/O modules from damaging voltage irregularities.
Functional Highlights: Beyond Simple Power Conversion
This unit provides far more than basic voltage conversion; it offers integrated protection for your entire subsystem. The wide 18-30V DC input range gracefully handles common voltage drops and fluctuations in industrial DC bus systems. Furthermore, its advanced circuitry actively guards against overloads, short circuits, and overheating, safeguarding both the supply itself and your valuable connected equipment. In addition, the highly efficient power conversion minimizes wasted energy and reduces thermal stress, which directly contributes to its exceptional long-term reliability and lower total cost of ownership.
Technical Specifications
Here are the key technical parameters for the DSSR 122 (DSSR1229K 4899 0001-NK):
Manufacturer: ABB
Model: DSSR 122 / DSSR1229K
Ordering Number: 4899 0001-NK
Module Type: Rack-Mount Power Supply
Input Voltage: 18 - 30 V DC
Output Voltage: 5 V DC
Output Current: 40 A
Total Power: 280 W
Dimensions (H x W x D): 90 x 265 x 138 mm
Origin: Sweden
Condition: Brand New, Original ABB
Typical Applications & System Integration
This power supply is ideally suited for integration into distributed control systems (DCS), programmable logic controller (PLC) racks, and other automation panels. For instance, it is commonly deployed to power processor modules, communication adapters, and sensor arrays where voltage precision is non-negotiable. Moreover, its compact form factor allows for straightforward installation in standard equipment racks alongside other ABB or third-party components. Therefore, it serves as a perfect, drop-in replacement or upgrade for existing installations requiring proven performance.
FAQ
What is the primary use of the ABB DSSR 122 power supply?
This unit is designed to provide a highly stable and protected 5V DC power rail within industrial control cabinets, primarily for powering sensitive digital electronics like CPU modules, communication cards, and remote I/O.
Can this power supply handle unstable input voltage?
Yes, absolutely. Its wide input range of 18-30V DC is specifically engineered to tolerate common fluctuations found in 24V DC industrial bus systems, ensuring a steady output even when the input voltage sags.
Is this model still active and supported by ABB?
Yes, according to the provided data, the DSSR 122 (4899 0001-NK) is listed as an active product, meaning it is not discontinued and should be eligible for technical support.
What protections does this power supply include?
The unit incorporates comprehensive protection against overload conditions, output short circuits, and excessive operating temperature, which collectively prevent failure and protect downstream equipment.
Do you offer technical documentation for this specific model?
Yes, we can provide the relevant ABB datasheet and product manuals for the DSSR1229K 4899 0001-NK to assist with installation and integration planning.
