About

SIEMENS Power Supply 6EP1931-2EC21 is a new industrial electric power supply suitable for various applications. With a voltage rating of 24 volts, this standard-sized, grey power supply ensures reliable performance. Backed by a 1-year warranty, this product is designed to meet industrial power requirements.

SITOP DC UPS Module – 24 V DC / 15 A

General Description

SITOP DC UPS module, 24 V / 15 A uninterruptible power supply without interface.
Input: 24 V DC / 16 A
Output: 24 V DC / 15 A

Input

• Supply voltage (DC): 24 V

• Input voltage range: 22 … 29 V

• Response voltage for buffer connection:

  • Preset: 22.5 V

  • Adjustable: 22 … 25.5 V (0.5 V steps)

• Input current at 24 V: 15 A (+ approx. 1 A with empty battery)

Energy Storage

• Storage type: Batteries

• Mains power cut bridging depends on: connected battery + load current
  (Refer battery module selection table)

Output

• Output voltage (normal): 24 V DC

• Output voltage (buffering): 24 V DC

• Output voltage formula: Vin – approx. 0.5 V

• Start-up delay: 1 s

• Voltage rise time: 60 ms

• Output voltage (buffer mode range): 19 … 28.5 V

• Output current:

  • Rated: 15 A

  • Normal operation: 0 … 15 A

  • Buffering mode: 0 … 15 A

• Peak current: 15.7 A

• Short-circuit proof: Yes

• Charging current: 0.35 A / 0.7 A

Efficiency & Power Loss

• Efficiency (normal): 96.2%

• Efficiency (battery operation): 96%

• Power loss:

  • Normal: 14 W

  • Battery mode: 15 W

• Supplied active power: 360 W

Protection & Monitoring

• Reverse polarity protection:

  • Battery: Yes

  • Input voltage: Yes

• Display (LEDs and relay contacts):

  • Normal: Green (OK)

  • Alarm: Red

  • Battery status > 85%: Green

  • Buffered operation: Yellow

Interfaces

• PC interface: No

• Communication function: No

Safety

• Galvanic isolation (input/output): No

• Protection class: Class III

• IP rating: IP20

Standards & Approvals

• Emitted interference: EN 55022 Class B

• Immunity: EN 61000-6-2

• Approvals: CE, UL (cULus), EAC

• Marine approvals: ABS, DNV

• Environmental Product Declaration: Yes

• MTBF @ 40°C: 791,139 hours

Environmental Conditions

• Operating temperature: -25 … +60°C

• Transport: -40 … +85°C

• Storage: -40 … +85°C

• Humidity: 5 … 95% (no condensation)

• Climate class: 3K3

Connections

• Connection type: Screw terminals

• Input 24 V DC: 2 terminals (1–4 mm²)

• Output 24 V DC: 4 terminals (1–4 mm²)

• Battery module: 2 terminals (1–4 mm²)

• Control/status: 10 terminals (0.5–2.5 mm²)

Mechanical Data

• Dimensions (W × H × D): 50 × 125 × 125 mm

• Installation height: 225 mm

• Required spacing:

  • Top: 50 mm

  • Bottom: 50 mm

  • Left: 0 mm

  • Right: 0 mm

• Mounting: DIN rail (EN 60715)

• Net weight: 0.4 kg

Technical Details