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Description
Technical Specifications
| Parameter Name | Parameter Value |
|---|---|
| Product Model | 6EP1331-1SH01 |
| Manufacturer | Siemens |
| Product Type | DIN Rail Power Supply (SITOP Series) |
| Input Voltage (AC) | 85 – 264 V AC (120/230 V AC nominal) |
| Input Frequency | 47 – 63 Hz |
| Output Voltage | 24 V DC (adjustable ±3%, approx. 22.2 – 25.8 V DC) |
| Output Current | 1.3 A |
| Output Power | 31.2 W |
| Efficiency (typical) | ≥ 80% |
| AC Hold-up Time (187 V input) | > 40 ms |
| Inrush Current (25 °C) | 15 A |
| Ripple & Noise | < 50 mV pp (typical) |
| Protection Functions | Short-circuit protection, overload protection, over-temperature shutdown |
| Mounting | 35 mm DIN rail (EN 60715) |
| Dimensions (W × H × D) | 72 × 90 × 55 mm |
| Weight | Approx. 0.2 – 0.45 kg (variant dependent) |
| Protection Class | IP20 |
| Certifications | CE, UL, CSA, cRUus |
Main Features and Advantages
Compact and Efficient Design: The Siemens 6EP1331-1SH01 stands out with its remarkably narrow 72 mm housing, which significantly reduces the required footprint in crowded control panels. This compact design is combined with high efficiency exceeding 80%, ensuring that the Siemens 6EP1331-1SH01 operates with minimal heat generation. As a result, it supports natural convection cooling, eliminating the need for additional cooling fans and reducing cabinet maintenance requirements .
Superior Input Flexibility and Robustness: Engineered for global deployment, the Siemens 6EP1331-1SH01 features a wide-range input capability (85–264 V AC). This allows the module to be used in regions with unstable power grids without reconfiguration. The hardware is further protected by a robust hold-up time of over 40 ms, which bridges brief power interruptions and prevents system resets, a critical feature for maintaining process continuity . The integrated inrush current limiting (15 A) also protects upstream circuit breakers from nuisance tripping during power-up .
Comprehensive Load Protection: The Siemens 6EP1331-1SH01 provides built-in electronic protection against short-circuits and overloads. In the event of a fault, the module enters a protective mode (typically “Hiccup” or current limiting) and automatically restores output once the fault condition is cleared. This “self-protection” function ensures that the Siemens 6EP1331-1SH01 acts as a reliable guardian for sensitive downstream electronics such as CPUs, input/output modules, and sensors, preventing catastrophic failures .
Simplified Integration and Diagnostics: Designed for the standard 35 mm DIN rail, the Siemens 6EP1331-1SH01 offers “plug-and-play” mechanical installation that is both fast and tool-free. A green status LED on the front panel provides immediate visual confirmation of a healthy 24 V DC output. The Siemens 6EP1331-1SH01 is a standard component of the SITOP family and is perfectly compatible with Siemens automation systems, ensuring seamless integration without the need for complex parameterization .
