Siemens 6EP1931-2FC21 SITOP PSU100C Stabilized Power Supply

Product Description

The Siemens 6EP1931-2FC21 is a SITOP PSU100C compact DC power supply module designed for industrial automation systems. It delivers a stable 24 V DC output at 2.5 A (60 W), ensuring reliable operation of controllers, sensors, PLCs, and other industrial electronics. Moreover, its universal input range allows global deployment in both 120–230 V AC and 110–300 V DC environments.

Its compact design and DIN rail mounting make integration into control cabinets straightforward. The module is built for high reliability with robust protection against overloads, short circuits, and thermal issues. Therefore, it is ideal for process automation, machine building, and industrial IT environments where uninterrupted power and compact form factor are essential.

Technical Specifications:

• Product Type: Stabilized Power Supply

• Model Number: 6EP1931-2FC21

• 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: 2.5 A

• Rated Power: 60 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 

• 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: 1.0 kg

• Compliance: IEC/EN standards, CE approvals

• Lifecycle: Active product 

FAQ

Q1: What is the output voltage and current of the 6EP1931-2FC21?
A1: It provides 24 V DC at 2.5 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 it mounted in control cabinets?
A3: The module is designed for standard DIN rail mounting.

Q4: What protection features does it include?
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.