Products Description
ABB SA168 3BSE003389R1 Power Supply Unit
The ABB SA168 3BSE003389R1 is an industrial-grade Power Supply Unit engineered to deliver precise and stable DC power for ABB automation components. Unlike generic power modules, the SA168 integrates voltage regulation, load sharing, and surge protection to ensure consistent operation of controllers, I/O modules, and communication interfaces within complex automation networks.
This unit is designed to maintain performance in harsh industrial environments, supporting continuous operation while minimizing thermal stress and electrical noise that could affect sensitive automation equipment.
With over 50 million in inventory, PLC EXPORT delivers only brand-new, authentic components- ready to ship,
rigorously tested, and backed by professional technical support.
Our address
32D Guomao Building, Siming District, Xiamen, Fujian, China
Phone Number(Whatsapp)
+86-18020714492
sales1@askplc.com
Functional Role / System Position
Within the ABB automation architecture, the SA168 occupies the power distribution layer:
AC Supply → SA168 Power Supply Unit → Distributed Controllers and I/O Modules → Field Devices
It provides regulated DC power to every connected module, enabling uninterrupted system function, accurate signal processing, and maintaining operational integrity of the automation network.
Key Features / Functional Capabilities
■ Regulated 24 V DC output with high precision for automation modules
■ Overcurrent, overvoltage, and short-circuit protection for industrial safety
■ Load-sharing capability for multiple modules in distributed systems
■ Designed for long-term, continuous operation under industrial conditions
■ Compact DIN rail design for easy installation and replacement
■ ABB OEM unit ensuring plug-and-play compatibility with existing systems
Application Areas / Typical Use Cases
The SA168 is widely used in industrial automation setups requiring a dependable DC power source. It is applied in control cabinets for powering distributed I/O systems, digital and analog modules, and communication devices within ABB networks.
It is particularly valuable in environments where maintaining power integrity is critical, such as chemical plants, water treatment facilities, and manufacturing lines. The unit supports system retrofits and expansions, allowing new modules to be added without disrupting existing operations.
Product Identification
| Parameter | Value |
|---|---|
| Product Type | Power Supply Unit |
| Model | SA168 |
| ABB Order Number | 3BSE003389R1 |
| Input Voltage | 110–240 V AC |
| Output Voltage | 24 V DC |
| Maximum Output Current | 5 A |
| Output Ripple | < 50 mV |
| Efficiency | 85% typical |
| Protection | Overcurrent, Overvoltage, Short-circuit |
| Installation | Control cabinet / DIN rail |
| Mounting | DIN rail |
| Operating Mode | Continuous |
| Manufacturer | ABB |
Installation / Handling
The SA168 must be installed in its designated DIN rail or backplane slot, ensuring proper electrical connections and grounding. Power must be disconnected during installation or removal, and standard industrial ESD precautions should be observed to protect the module and connected equipment.
Advantages / Value Highlights
The SA168 ensures high reliability by delivering regulated DC power while protecting sensitive automation components from electrical disturbances. Its modular form factor allows for efficient cabinet layout and simplified replacement, reducing downtime in both new and legacy ABB automation systems.
Supply & Warranty Information
One-year warranty. Supplied as an original ABB industrial automation spare part through authorized distributors.
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Common problems
Q1: What output voltage does the SA168 provide?
It delivers 24 V DC to all connected automation modules.
Q2: Does the module protect connected equipment from electrical faults?
Yes, it includes overcurrent, overvoltage, and short-circuit protection.
Q3: Can the SA168 support multiple modules simultaneously?
Yes, it can share load among distributed modules in a control cabinet.
Q4: Is it suitable for continuous industrial operation?
Yes, it is designed for continuous use under harsh industrial conditions.
Q5: Can the SA168 be installed without modifying existing systems?
Yes, as an ABB OEM unit, it allows direct replacement or addition without system redesign.
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