About SIEMENS POWER SUPPLY 6EP1961-2BA51

Data Sheet 6EP1961-2BA51

SITOP PSE200U / 40.53 A / NEC Class 2
4-Channel Selectivity Module
Input: 24 V DC / 12 A
Output: 24 V DC / 4 3 A (adjustable 0.53 A)

Input

• Power supply type: Controlled DC voltage

• Rated DC voltage: 24 V

• Input voltage range: 22 30 V

• Overvoltage capability: 35 V

• Rated input current: 12 A

Output

• Output voltage: Controlled DC voltage

• Voltage formula: Vin approx. 0.2 V

• Outputs: 4

• Rated output current (per channel, up to 60C): 3 A

• Adjustable trip threshold: 0.5 3 A (via potentiometer)

• Max response delay: 5 s

• Parallel output switching: No

• Connection behavior:

  • All outputs switch ON together once input > 20 V

  • Sequential connection selectable: 25 ms, 100 ms, or load optimized (via DIP switch)

Efficiency

• Efficiency: 97%

• Typical power loss: 9 W

Switch-off Characteristics

• Overcurrent: 1.01.1 set value off after approx. 5 s

• Current limitation: 1.1 set value off after ~100 ms

• Immediate switch-off: Output > set value and Vin < 20 V off after ~0.5 ms

• Residual current after switch-off: 1 mA

• Reset: Sensor per output

• Remote reset: 24 V input (signal HIGH > 15 V), not isolated

Protection & Monitoring

• Input fuse: 5 A per output (internal, not accessible)

• LED indication (per output):

  • Green: Output OK

  • Yellow: Output switched off manually

  • Red: Overcurrent fault

• Signaling contact:

  • Changeover contact (0.1 A / 24 V DC)

Safety

• Galvanic isolation: None

• Safety standard: EN 62368-1

• Protection class: Class III

• IP rating: IP20

Standards & Approvals

• EMC emission: EN 55022 Class B

• EMC immunity: EN 61000-6-2

• CE marked: Yes

• UL approvals:

  • UL-Recognized (UL 2367) E328600

  • cULus-Listed (UL 508 / CSA C22.2 No.107.1) E197259

• EAC approval: Yes

• NEC Class 2: Yes (UL1310)

• CB certificate: Yes

• MTBF at 40C: 755,915 h

Hazardous Area Approvals

• IECEx: No

• ATEX: No

Marine Approvals

• Shipbuilding approval: Yes

  • ABS

  • DNV

Environmental Product Declaration

• Total GWP: 290.7 kg CO eq

• Manufacturing: 20.9 kg

• Operation: 469.4 kg

• End of life: 0.33 kg

Ambient Conditions

• Operating temperature: 25 +60C

• Transport temperature: 40 +85C

• Storage temperature: 40 +85C

• Humidity: 595%, no condensation

• Environmental class: 3K3

Connections

• Terminal type: Screw terminals

• Input:

  • +24 V: 2 0.5 16 mm

  • 0 V: 2 0.5 4 mm

• Outputs (14): 1 0.5 4 mm each

• Remote reset: 1 0.5 4 mm

• Signaling contact: 3 0.5 4 mm

Mechanical Data

• Dimensions (W H D): 72 80 72 mm

• Installation height: 180 mm

• Required spacing:

  • Top: 50 mm

  • Bottom: 50 mm

  • Left: 0 mm

  • Right: 0 mm

• Mounting: DIN rail EN 60715 (35 7.5 / 15)

• Wall mounting: No

• Can be lined up: Yes

• Net weight: 0.2 kg 

Technical Details