Article number

SITOP POWER/DC/DC/24V/12V/2.5A

SITOP PSU3400/DC/DC/24V/12V/8A

********** spare part ********* SITOP 2.5 A, DC/DC converter stabilized power supply input: 24 V DC output: 12 V DC/2.5 A

SITOP PSU3400 12 V/8 A stabilized power supply input: 24 V DC (14…32 V) output: 12 V DC/8 A

input

type of the power supply network

DC voltage PELV/SELV

DC voltage

supply voltage at AC

Startup as of 18 V, derating necessary for 14 ... 18 V DC

supply voltage at DC

24 ... 24 V

input voltage at DC

18.5 ... 30.2 V

14 ... 32 V

wide range input

No

overvoltage overload capability

-

buffering time for rated value of the output current in the event of power failure minimum

5 ms

operating condition of the mains buffering

at Vin = 24 V

input current

● at rated input voltage 24 V

2.5 A

4.5 A

current limitation of inrush current at 25 °C maximum

20 A

15 A

duration of inrush current limiting at 25 °C

● typical

5 ms

I2t value maximum

0.18 A²·s

fuse protection type

not accessible

15 A (not accessible), breaking capacity 100 A

fuse protection type in the feeder

Recommended miniature circuit breaker: 10 A characteristic B

Recommended miniature circuit breaker: 16 A characteristic B or C

output

voltage curve at output

Controlled, isolated DC voltage

output voltage at DC rated value

12 V

output voltage

● at output 1 at DC rated value

12 V

output voltage adjustable

Yes; via potentiometer

adjustable output voltage

12 ... 14 V; max. 120 W

12 ... 15.5 V

relative overall tolerance of the voltage

3 %

2 %

relative control precision of the output voltage

● on slow fluctuation of input voltage

0.1 %

0.2 %

● on slow fluctuation of ohm loading

0.4 %

1.3 %

residual ripple

● maximum

100 mV

150 mV

● typical

50 mV

10 mV

voltage peak

● maximum

200 mV

250 mV

● typical

50 mV

30 mV

display version for normal operation

Green LED for 12 V OK

behavior of the output voltage when switching on

No overshoot of Vout (soft start)

response delay maximum

0.5 s

voltage increase time of the output voltage

● typical

300 ms

10 ms

● maximum

20 ms

output current

● rated value

2.5 A

8 A

● rated range

0 ... 2.5 A

0 ... 8 A; +60 ... +70 °C: Derating 2%/K

supplied active power typical

107 W

short-term overload current

● on short-circuiting during the start-up typical

3.3 A

● at short-circuit during operation typical

3.3 A

constant overload current

● on short-circuiting during the start-up typical

3.3 A

● at short-circuit during operation typical

3.3 A

bridging of equipment

Yes

number of parallel-switched equipment resources for increasing the power

2

efficiency

efficiency in percent

83 %

90 %

power loss [W]

● at rated output voltage for rated value of the output current typical

6.1 W

11 W

● during no-load operation maximum

1.5 W

closed-loop control

relative control precision of the output voltage with rapid fluctuation of the input voltage by +/- 15% typical

0.5 %

0.3 %

relative control precision of the output voltage load step of resistive load 50/100/50 % typical

3 %

4 %

setting time

● load step 50 to 100% typical

5 ms

2 ms

● load step 100 to 50% typical

2 ms

setting time

● maximum

5 ms

protection and monitoring

design of the overvoltage protection

< 24 V

Ua < 22 V

property of the output short-circuit proof

Yes

design of short-circuit protection

Constant current characteristic approx. 3.2 A

Electronic shutdown, automatic restart

response value current limitation

3 ... 3.6 A

● typical

3.3 A

9 A

enduring short circuit current RMS value

● typical

3.2 A

display version for overload and short circuit

LED red for "overload"

LED yellow for "overload"

safety

galvanic isolation between input and output

Yes

galvanic isolation

Safety extra low output voltage Vout according to EN 60950-1

operating resource protection class

Class II

Class III

protection class IP

IP20

EMC

standard

● for emitted interference

EN 55022 Class B

EN 61000-6-3

● for mains harmonics limitation

-

not applicable

● for interference immunity

EN 61000-6-2

standards, specifications, approvals

certificate of suitability

● CE marking

Yes

● UL approval

Yes; cCSAus (UL 508, CSA22.2-107, UL60950-1, CSA22.2-60950-1)

Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259

● CSA approval

Yes; cCSAus (UL 508, CSA22.2-107, UL60950-1, CSA22.2-60950-1)

Yes; cULus-Listed (UL 508, CSA C22.2 No. 107.1), File E197259

● EAC approval

Yes

● Regulatory Compliance Mark (RCM)

Yes

● NEC Class 2

No

type of certification

● CB-certificate

No

Yes

MTBF at 40 °C

563 793 h

1 934 648 h

standards, specifications, approvals hazardous environments

certificate of suitability

● IECEx

No

● ATEX

No

● ULhazloc approval

No

● cCSAus, Class 1, Division 2

No

● FM registration

No

standards, specifications, approvals marine classification

shipbuilding approval

No

Yes

Marine classification association

● American Bureau of Shipping Europe Ltd. (ABS)

No

Yes

● French marine classification society (BV)

No

● Det Norske Veritas (DNV)

No

Yes

● Lloyds Register of Shipping (LRS)

No

ambient conditions

ambient temperature

● during operation

0 ... 60 °C; with natural convection

-25 ... +70 °C; with natural convection

● during transport

-40 ... +85 °C

● during storage

-40 ... +85 °C

environmental category according to IEC 60721

Climate class 3K3, 5 ... 95% no condensation

connection method

type of electrical connection

screw terminal

● at input

+, -: 1 screw terminal each for 0.5 ... 2.5 mm²

L, N, FE: 1 screw terminal each for 0.5 ... 2.5 mm² single-core/finely stranded

● at output

+, -: 2 screw terminals each for 0.5 ... 2.5 mm²

● for auxiliary contacts

-

mechanical data

width × height × depth of the enclosure

32.5 × 125 × 125 mm

32 × 100 × 100 mm

installation width × mounting height

32.5 mm × 225 mm

32 mm × 200 mm

required spacing

● top

50 mm

● bottom

50 mm

● left

0 mm

● right

0 mm

fastening method

Snaps onto DIN rail EN 60715 35x7.5/15

● standard rail mounting

Yes

● S7 rail mounting

No

● wall mounting

No

housing can be lined up

Yes

net weight

0.32 kg

accessories

electrical accessories

Buffer module

further information internet links

internet link

● to website: Industry Mall

https://mall.industry.siemens.com

● to website: CAx-Download-Manager

https://siemens.com/cax

● to website: Industry Online Support

https://support.industry.siemens.com

additional information

other information

Specifications at rated input voltage and ambient temperature +25 °C (unless otherwise specified)

security information

Siemens provides products and solutions with industrial cybersecurity functions that support the secure operation of plants, systems, machines and networks. In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial cybersecurity concept. Siemens’ products and solutions constitute one element of such a concept. Customers are responsible for preventing unauthorized access to their plants, systems, machines and networks. Such systems, machines and components should only be connected to an enterprise network or the internet if and to the extent such a connection is necessary and only when appropriate security measures (e.g. firewalls and/or network segmentation) are in place. For additional information on industrial cybersecurity measures that may be implemented, please visit www.siemens.com/cybersecurity-industry. Siemens’ products and solutions undergo continuous development to make them more secure. Siemens strongly recommends that product updates are applied as soon as they are available and that the latest product versions are used. Use of product versions that are no longer supported, and failure to apply the latest updates may increase customer’s exposure to cyber threats. To stay informed about product updates, subscribe to the Siemens Industrial Cybersecurity RSS Feed under https://www.siemens.com/cert. (V4.7)

Approvals Certificates