Product Introduction
With an efficiency of 87% and robust overload protection, the Siemens 6EP1333-2AA01 SITOP SMART stabilized power supply delivers reliable 24 V DC power for demanding industrial automation environments. This compact 120 W unit accepts universal AC input (120/230 V AC) and provides a regulated 5 A output, making it an ideal choice for control cabinets, PLC systems, and sensor networks. The Siemens 6EP1333-2AA01 is engineered for long-term cost savings through reduced energy loss and extended service life.
Technical Specifications
The following table highlights key parameters of the Siemens 6EP1333-2AA01 power supply, all verified from the product datasheet.
| Parameter |
Value |
| Input Voltage (Nominal) |
120/230 V AC, 1-phase |
| Input Voltage Range (Switch-selectable) |
85–132 V AC / 170–264 V AC |
| Rated Output Voltage |
24 V DC |
| Rated Output Current |
5 A |
| Adjustable Output Voltage Range |
22.8 – 28 V DC |
| Efficiency at Rated Load |
Approx. 87% |
| Power Loss at Rated Load |
Approx. 17 W |
| Residual Ripple (max.) |
150 mVpp |
| Overvoltage Protection |
< 33 V |
| Short-Circuit Protection |
Constant current characteristic |
| Dimensions (W x H x D) |
50 x 125 x 125 mm |
| Weight |
Approx. 0.5 kg |
| Degree of Protection |
IP20 |
| Ambient Temperature (Operation) |
0 to 60 °C (natural convection) |
Industry Applications
The Siemens 6EP1333-2AA01 excels in applications that demand a stable, isolated DC supply with minimal ripple. Typical use cases include powering programmable logic controllers (PLCs), distributed I/O systems, industrial sensors, and actuator circuits. In a manufacturing line, this power supply ensures consistent voltage even during load transients, reducing the risk of equipment malfunction. With its ability to deliver up to 6 A at temperatures up to +45 °C, the Siemens 6EP1333-2AA01 offers additional headroom for critical loads.
Installation & Setup Guidance
Mount the Siemens 6EP1333-2AA01 on a standard DIN rail (EN 60715 35x7.5/15) using the integrated snap-on mechanism. The unit requires no tools for mounting. Connect the AC supply to the L, N, and PE screw terminals (0.5–2.5 mm²). For the DC output, use the two L+ and M terminals. The selector switch on the device lets you choose the appropriate input voltage range (120V or 230V) before powering on. Ensure proper ventilation as the unit relies on natural convection for cooling. Allow at least 50 mm clearance above and below the module for airflow.
Maintenance & Reliability
The Siemens 6EP1333-2AA01 is designed for minimal maintenance. Its built-in fuse (T 3.15 A/250 V) protects against overcurrent, and the constant current short-circuit protection prevents damage to the load during faults. Periodic inspection should focus on ambient temperature (0–60 °C), dust accumulation on the housing, and terminal tightness. The unit’s high efficiency (87%) translates into lower heat generation, contributing to longer capacitor life and extended reliability. Over time, this reduces total cost of ownership, aligning with the ROI-focused design of the SITOP SMART series.
Selection Guide & Purchasing Advice
Before ordering the Siemens 6EP1333-2AA01, verify your system’s input voltage and required DC current. For parallel operation to increase output current, two units can be connected in parallel. Ensure your DIN rail and enclosure provide adequate space (50 mm width per unit). As a trusted supplier, PLC Source PRO (ubest101) offers genuine Siemens modules with full traceability. Check stock availability and request a quote for volume orders.