Product Overview: Siemens 6ES7307-1EA00-0AA0 SITOP Power Supply
The Siemens 6ES7307-1EA00-0AA0 SITOP power supply delivers a stable 24 VDC output with 5 A current rating, designed for single-phase and two-phase operation. This Industrial Automation Module provides reliable power for S7-300 systems and other industrial controls, featuring robust protection mechanisms to minimize downtime.
Technical Specifications
| Parameter |
Value |
| Output Voltage |
24 VDC (adjustable range with ±0.3% Vout, ±2.5% Vout) |
| Output Current |
5 A (overload 5.5 to 6.5 A) |
| Efficiency |
Approx. 87% |
| Power Loss |
Approx. 18 W |
| Rise Time |
typ. 0.1 ms |
| Overvoltage Protection |
Shutdown at approx. 30 V, automatic restart |
| Short-Circuit Protection |
Electronic shutdown, automatic restart <9 A |
| Safety Extra-Low Voltage |
SELV output acc. to EN 60950 and EN 50178 |
| Protection Class |
Class I |
| Leakage Current |
<3.5 mA (typ. 0.3 mA) |
| CE Mark |
Yes |
| UL Listing |
UL listed (UL 508), File E143289; CSA 22.2 No.14-95 |
| Hazardous Location |
Class I Div.2 Group A,B,C,D, T4 |
| Degree of Protection |
IP20 |
| EMC Standards |
EN 55022 Class B, EN 61000-3-2, EN 61000-6-2 |
| Ambient Temperature (Operation) |
0 to +60 °C with natural convection |
| Ambient Temperature (Storage) |
-40 to +85 °C |
| Climatic Class |
3K3 acc. to EN 60721, no condensation |
| Connection |
Screw terminals: one for 0.5 to 2.5 mm² single-core/finely stranded; 3 terminals for 0.5 to 2.5 mm² |
| Dimensions (WxHxD) |
80 x 125 x 120 mm |
| Weight |
0.74 kg |
| Mounting |
Snap-mounting on S7 rail; adapter for DIN rail |
Failure Mode Analysis and Reliability
The Siemens 6ES7307-1EA00-0AA0 includes redundant protection to guard against common power supply failures. An additional control loop ensures stable output despite transients. In case of overvoltage (approx. 30V), the unit shuts down automatically and restarts once conditions normalise. This prevents damage to downstream equipment. The electronic short-circuit protection with automatic restart (<9 A) ensures minimal downtime — a critical advantage in continuous process industries. Leakage current is kept below 3.5 mA (typ. 0.3 mA), reducing nuisance tripping in sensitive systems.
Industry Applications
The Siemens 6ES7307-1EA00-0AA0 is ideal for powering PLC systems in manufacturing, process control, and building automation. Its SELV output and hazardous location certification (Class I Div.2) allow use in oil and gas, chemical plants, and food processing. The wide temperature range (0 to +60°C) and natural convection cooling make it suitable for enclosed cabinets without forced air. For example, in a bottling line, this power supply reliably energises S7-300 controllers and sensors, with automatic restart preventing prolonged stoppages after momentary faults.
Maintenance & Reliability
Regular inspection of the Siemens 6ES7307-1EA00-0AA0 includes checking screw terminal connections for tightness (0.5 to 2.5 mm² conductors) and verifying ambient temperature stays within 0 to +60°C. The unit has no moving parts and requires no periodic calibration. The climatic class 3K3 ensures operation under non-condensing humidity. With its built-in protection, component failure is unlikely, reducing total cost of ownership. The snap-mounting on S7 rail simplifies replacement if ever needed.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6ES7307-1EA00-0AA0, verify that your system requires a 24 VDC, 5 A power supply with the given protection features. This module is designed for S7-300 systems but can also power other 24 V loads. For installation you may need the mounting adapter for DIN rail (sold separately). As a trusted supplier, PLC Source PRO (available at ubest101.myshopify.com) stocks this exact model. Ensure you order the Siemens 6ES7307-1EA00-0AA0 — the specific part number that matches your application requirements.