| Attribute | Value |
|---|---|
| Brand | Siemens AG |
| Series | Sitop |
| Module Type | DC-USV-Modul 15 |
| Model Number | 6EP1 931-2EC21 |
| Product Code | X 5 6 7 8 / 4 |
| Product Name | Sitop DC UPS |
| Type | Power Supply |
| Part Number | 1P 6EP1931-2EC21 |
| Serial Number | S Q6K5BB89GJG |
| Input | DC 24V | 16A |
| Output 1 | DC 24V | 15A (Load) |
| Output 2 | DC 24V | 0.35–0.7A (Battery) |
| Operating Temperature | 0…60°C (Surrounding Air) |
| Product State | X 5 6 7 / 4 |
| Certification | II 3G, Ex Na Nc IIC, T3 Gc |
| Hazard Class | Class I, Div 2, Gr. A,B,C,D, T3 |
| Certification Code | KCC-REM-S49-SITOPDCUPS |
| Country of Origin | Made in Austria |
| Weight | 420 g |
What is the Siemens Sitop 6EP1 931-2EC21?
The Siemens Sitop 6EP1 931-2EC21 is a small yet very efficient 24VDC DIN rail power supply for use in industrial control and automation systems. A member of Siemens’ well-respected SITOP power supply series, this model is designed to provide a reliable and clean power output even during voltage dips or high inrush currents.
It is extensively used in centralized and decentralized automation systems, especially where space-saving, energy-efficient, and rugged solutions are required.
Key Features
Following are some of the salient features of the 6EP1 931-2EC21:
Input Voltage Range: 120–230V AC
Output Voltage: Regulated 24V DC
Output Current: 2.5 A
High Efficiency: More than 85%, minimizing energy wastage
Wide Temperature Range: Works satisfactorily between -10°C to +70°C
Compact Design: Saves panel space in cramped enclosures
DIN Rail Mounting: Simple and secure mounting
Comprehensive Protection: Integrated short-circuit, overload, and overvoltage protection
These features make the Sitop module designed not only for standard performance but also for robustness and longevity.
Why Reliability Matters in Industrial Power Supplies
Down time is costly. Whether it’s a production line, a robotics system, or a vital control panel, power failure or surge can shut things down. Sitop 6EP1 931-2EC21 is rock-solid dependable due to its heavy-duty design and protection devices. It’s not merely about providing power—it’s about providing it safely and reliably.
Integrated protection from short circuits, overloads, and overvoltages protects connected equipment from unsafe power spikes or faults.
Where Is It Widely Used?
The Siemens Sitop 6EP1 931-2EC21 appears in a number of industrial and commercial applications:
- Factory Automation Panels
- PLC Systems and Control Cabinets
- Building Automation
- Packaging and Processing Machinery
- Conveyor Systems
- Small Robotics or Actuators
Its compactness and flexibility make it suitable for use in areas where panel space is limited but performance cannot be sacrificed.
