Siemens 6EP1332-1SH71 Compact DIN Rail DC System Power Supply
The Siemens 6EP1332-1SH71 is a highly reliable, single-phase, DIN rail-mountable DC power supply designed for industrial automation applications. This compact unit offers a stabilized 24V DC output with a 2.5A current rating, providing consistent and dependable power for critical control systems. Its wide-range input of 120/230V AC ensures compatibility with standard industrial power grids, while features like automatic range selection simplify integration. The 6EP1332-1SH71 is specifically suited for powering Siemens SIMATIC S7-1200 controllers, signal modules, and other connected loads, ensuring stable operation in demanding environments.
Product Specifications
| Feature | Specification |
| :------------------- | :----------------------------------------------- |
| Article Number | 6EP1332-1SH71 |
| Product Type | SIMATIC S7-1200 Power Module PM1207 |
| Input Voltage | 120/230V AC (Automatic Range Selection) |
| Input Voltage Range | 85-132V AC (120V), 176-264V AC (230V) |
| Input Frequency | 47-63 Hz |
| Output Voltage | 24V DC |
| Output Current | 2.5 A |
| Output Power | 60 W |
| Stabilized Output | Yes |
| Ripple & Noise | Max. 150 mV peak-to-peak |
| Efficiency | Typical 85% at 230V input |
| Mounting | DIN Rail (EN 60715 35x7.5/15) |
| Dimensions (W x H x D) | 70 x 100 x 75 mm |
| Net Weight | 0.3 kg |
| Operating Temperature| 0 to 60 °C |
| Protection | Overload, Short-circuit |
| Approvals | UL, ATEX, GL (enabling universal use) |
| Degree of Protection | IP20 |
Core Features & Market Positioning
The Siemens 6EP1332-1SH71 distinguishes itself in the industrial power supply market through its robust design, reliable performance, and seamless integration capabilities within the Siemens automation ecosystem. As a key component of the SIMATIC S7-1200 series, it offers engineers and system integrators a dependable power solution that minimizes downtime and ensures the stable operation of control processes. Its compact form factor, coupled with DIN rail mounting, facilitates efficient use of space in control cabinets. The product's ability to handle a wide AC input voltage range and provide a precisely regulated DC output positions it as a versatile choice for various industrial settings. The inclusion of essential protective features, such as overload and short-circuit protection, further enhances its value proposition by safeguarding connected equipment.
Key Application Scenarios
Engineers and automation professionals frequently specify the Siemens 6EP1332-1SH71 for a variety of demanding applications. Its primary role is to provide stable power to SIMATIC S7-1200 controllers, which are at the heart of many automated systems. This includes applications in:
Automated Production Lines: Ensuring consistent power for PLCs controlling complex manufacturing processes. Material Handling Systems: Powering control units for conveyors, robotics, and automated storage systems. Process Automation: Providing reliable DC power for control loops and instrumentation in chemical, food and beverage, and other process industries. Packaging and Assembly Machinery: Supplying power to PLCs that manage intricate sequences in high-speed packaging and assembly operations. Quality Control Stations: Powering the control systems integral to automated inspection and testing equipment.
The 6EP1332-1SH71's versatility also extends to applications where a compact, robust 24V DC power supply is required for auxiliary equipment or distributed control I/O.
Practical System Integration Guidance
Integrating the Siemens 6EP1332-1SH71 into an industrial control system is straightforward due to its standardized design. The unit is designed for direct mounting onto a standard 35mm DIN rail (EN 60715). Wiring connections are made via screw terminals, accommodating wire gauges from 0.5 to 2.5 mm² for both input (L, N, PE) and output (L+, M). It's crucial to ensure that the supply voltage connection complies with relevant national and regional regulations, such as IEC 60364 and EN 50178. A protective device, like a miniature circuit breaker (recommended: 16A characteristic B or 10A characteristic C), and a disconnector should be installed in the feeder for safety and isolation. The unit's wide-range input automatically adapts to 120V or 230V AC, simplifying installation in different geographical locations. For enhanced reliability, parallel operation of two identical units is permissible to increase power capacity.
Operation and Risk Mitigation
Operating the Siemens 6EP1332-1SH71 requires adherence to standard electrical safety practices. The unit's enclosure provides IP20 protection, meaning it is protected against solid objects greater than 12.5 mm but is not intended for wet environments. When operational, certain internal components may carry hazardous voltage, necessitating that only qualified personnel perform installation, maintenance, or troubleshooting. To mitigate risks, always ensure the power supply is de-energized before performing any wiring or maintenance. The unit features soft-start functionality, preventing output voltage overshoot upon power-up. For risk mitigation related to network disturbances, the power supply offers a mains buffering time of at least 20 ms at rated output current, ensuring continued operation during brief power interruptions.
Scalability & Long-Term Value
The Siemens 6EP1332-1SH71 is part of a broader ecosystem of Siemens automation components, offering excellent scalability and long-term value. Its primary function is to power the S7-1200 series PLCs, which themselves are modular and can be expanded with additional I/O modules, communication processors, and other devices to meet growing application demands. For applications requiring higher power output than the 2.5A provided by a single unit, two 6EP1332-1SH71 modules can be connected in parallel to effectively double the available current. Furthermore, Siemens' commitment to product lifecycle management ensures that components like the 6EP1332-1SH71 remain available and supported for extended periods. Its integration into the SIMATIC platform also means it is compatible with a wide range of Siemens industrial software and IIoT solutions, facilitating digital transformation initiatives and enabling advanced data acquisition and analysis for predictive maintenance and process optimization.
Frequently Asked Questions (FAQs)
1. What is the input voltage range for the Siemens 6EP1332-1SH71?
The Siemens 6EP1332-1SH71 features automatic range selection, allowing it to operate with either 120V AC or 230V AC input.
This wide range ensures flexibility for global deployment. It accepts 85-132V AC at 120V nominal and 176-264V AC at 230V nominal.
This capability simplifies installation in various industrial power environments without requiring manual configuration.
2. What is the maximum output current and power of the 6EP1332-1SH71?
This power supply module delivers a stable 24V DC output.
It is rated for a maximum continuous output current of 2.5 Amperes.
Consequently, it can provide a total output power of 60 Watts.
3. Can two Siemens 6EP1332-1SH71 power supplies be connected in parallel?
Yes, parallel connection of two identical 6EP1332-1SH71 units is permitted.
This configuration is used to increase the total output current capacity for higher power demands.
Ensure proper wiring and matching units for reliable parallel operation.
4. What type of mounting is supported by the 6EP1332-1SH71?
The Siemens 6EP1332-1SH71 is designed for easy installation on standard 35mm DIN rails.
It conforms to the EN 60715 standard for rail mounting.
Wall mounting is also an option, providing installation flexibility.
5. What protection features are included in the 6EP1332-1SH71?
The unit incorporates overload protection for connected devices.
It also features short-circuit protection to prevent damage during fault conditions.
These features enhance the overall safety and reliability of the power system.
6. Is the 6EP1332-1SH71 suitable for hazardous area applications?
The 6EP1332-1SH71 holds ATEX certification, indicating its suitability for certain hazardous environments.
Specific installation requirements, such as enclosure within an IP54-rated cabinet, may apply for use in Zone 2 areas.
Always consult the product's detailed documentation and local regulations for definitive hazardous area suitability.
7. What is the operating temperature range for this power supply?
The Siemens 6EP1332-1SH71 can operate reliably within a temperature range of 0 to 60°C.
This range allows for its use in a variety of industrial settings with moderate ambient temperatures.
It is important to ensure adequate ventilation to maintain performance within this specified range.
8. How does the mains buffering feature of the 6EP1332-1SH71 work?
The power supply provides mains buffering to maintain operation during brief power fluctuations.
It offers at least 20 milliseconds of buffering at the rated output current.
This feature helps prevent system interruptions from minor grid disturbances.
9. What documentation is available for the 6EP1332-1SH71?
Product datasheets are readily available for the 6EP1332-1SH71.
Operating instructions and safety guidelines are also provided by Siemens.
These documents offer detailed technical specifications and installation advice.
10. What are the main advantages of using the 6EP1332-1SH71 in an S7-1200 system?
It is specifically designed to power SIMATIC S7-1200 controllers and modules.
Its compact size and DIN rail mounting optimize space within control cabinets.
The stabilized 24V DC output ensures reliable performance for critical automation tasks.
