6EP1931-2EC21 Siemens PSU100C Compact Automation Power Supply

Product Description

The Siemens 6EP1931-2EC21 is a SITOP PSU100C compact stabilized power supply designed for industrial automation systems. It provides a stable 24 V DC output at 2 A (48 W), ensuring reliable operation for PLCs, sensors, controllers, and other industrial electronics. Moreover, its universal input range supports 120–230 V AC and 110–300 V DC, allowing flexible deployment in diverse global environments.

Its compact DIN rail design enables straightforward integration into control cabinets. The module delivers high reliability with robust protection against overload, short-circuit, and thermal issues. Therefore, it is ideal for process automation, machine building, and industrial IT applications where space is limited but continuous power is critical.

Technical Specifications:

• Product Type: Stabilized Power Supply

• Model Number: 6EP1931-2EC21

• Manufacturer: Siemens

• Series: SITOP PSU100C

• Input Voltage Range (AC): 120–230 V AC

• Input Voltage Range (DC): 110–300 V DC

• Rated Frequency: 47–63 Hz

• Output Voltage: 24 V DC

• Output Current: 2 A

• Rated Power: 48 W

• Efficiency: 86 %

• Mains Buffering: ≥ 20 ms at rated load

• Overvoltage Resistance: Up to 2.3 × Vin rated (1.3 ms)

• Switch-on Current Limiting: Max. ~30 A (depending on input)

• Protection Features: Overload, short-circuit, and thermal protection

• Operating Temperature: 0 … +60 °C

• Storage Temperature: -40 … +70 °C

• Relative Humidity: 5–95 % non-condensing

• Mounting: DIN rail

• Dimensions: 125 × 75 × 120 mm

• Weight: 0.9 kg

• Compliance: IEC/EN standards, CE approvals

• Lifecycle: Active product

FAQ

Q1: What is the output voltage and current of the 6EP1931-2EC21?
A1: It provides 24 V DC at 2 A, suitable for small industrial devices.

Q2: Can it handle both AC and DC input?
A2: Yes, it supports 120–230 V AC and 110–300 V DC input ranges.

Q3: How is this module mounted in control cabinets?
A3: The module is designed for standard DIN rail mounting.

Q4: What protection features are included?
A4: Overload, short-circuit, and thermal protection are built-in.

Q5: Which applications is this power supply suitable for?
A5: Ideal for Siemens PLCs, sensors, controllers, and compact automation panels.