Product Overview
When reliable DC power is critical for your automation system, the Siemens 6EP1322-1SH03 LOGO!POWER stabilized power supply delivers consistent 12 V/4.5 A output from a wide input range of 100–240 V AC or 110–300 V DC. This industrial-grade module is engineered to reduce downtime and energy costs, making it a cost-effective choice for long-term operations.
Part of the LOGO!Power family, the Siemens 6EP1322-1SH03 provides a controlled, isolated DC output with high efficiency (approx. 85%) and low power losses (typical 1.9 W at no load). Its compact design (72 mm width, 0.25 kg) snaps onto standard DIN rails, simplifying installation in control cabinets.
Technical Specifications Breakdown
Key parameters of the Siemens 6EP1322-1SH03 ensure stable operation under varying conditions:
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Input: Single-phase AC or DC; rated voltage Vin rated = 100–240 V AC; DC range 110–300 V. Wide-range input eliminates need for voltage selector switches.
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Output: 12 V DC rated voltage, adjustable between 10.5–16.1 V via potentiometer. Continuous current 0–4.5 A (derating above +55°C by 2%/K).
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Efficiency: Approximately 85% at rated load, reducing heat generation and energy bills. Power loss at rated output is only 10 W.
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Protection: Short-circuit proof with constant current characteristic; overvoltage protection per EN 60950-1; current limitation typical 5.8 A. Safe extra-low output voltage (SELV) isolation.
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Environmental: Operating temperature -20 to +70°C; IP20 protection; conforms to EN 55022 Class B for emissions and EN 61000-6-2 for immunity.
Industry Applications
The Siemens 6EP1322-1SH03 is ideal for powering PLCs, sensors, relays, and small control systems in manufacturing, material handling, and building automation. Its marine approvals (GL, ABS) and ATEX Ex nA IIC T3 certification make it suitable for harsh or hazardous environments. In a typical packaging line, the power supply's stable 12 V output and mains buffering of >40 ms ensure uninterrupted operation during voltage dips.
Installation & Setup Guidance
Mount the Siemens 6EP1322-1SH03 onto a DIN rail EN 60715 (35×7.5/15). Use screw-type terminals: supply L and N each accept 0.5–2.5 mm² wire; output terminals (+, -) accept same gauge. Ensure natural convection for cooling; derate output if ambient exceeds +55°C. For enhanced capacity, up to two units can be paralleled. No additional auxiliary connections required.
Selection Guide & Purchasing Advice
Before purchasing the Siemens 6EP1322-1SH03, verify your load requirements: the unit delivers up to 4.5 A at 12 V DC. If your system needs higher current or a different voltage, consider a different model. Always check input voltage compatibility and protection class (Class II, no protective conductor). For reliable sourcing, choose PLC Source PRO (ubest101) — we stock genuine Siemens modules with full traceability.