6EP1961-2BA21

Technical specifications

Manufacturer

Siemens

Manufacturer part no.

6EP1961-2BA21

Type

Selectivity module

Application

24 V DC load distribution and protection

Used with

24 V DC supplies up to 40 A

product type designation

PSE200U

product designation

SITOP Selectivity module

type of current supply

Selectivity module, 4 x 10 A Common signal contact

input / type of the power supply network

Controlled DC voltage

input / supply voltage at DC rated value

24 V

input voltage at DC

22 ... 30 V

input / overvoltage overload capability

35 V

input current at rated input voltage 24 V rated value

40 A

voltage curve at output

controlled DC voltage

formula for output voltage

Vin - approx. 0.2 V

output / relative overall tolerance of the voltage note

In accordance with the supplying input voltage

number of outputs

4

output current up to 60 °C per output rated value

10 A

output / adjustable current response value current of the current- dependent overload release

3 ... 10 A

output / type of response value setting

via potentiometer

output / response delay maximum

5 s

product feature parallel switching of outputs

No

type of outputs connection

simultaneous switch-on of all outputs after power-up of the supply voltage > 20 V, delay time of 25 ms, 100 ms, or "load-optimized" via DIP switch configurable for sequential switch-on

efficiency in percent

99 %

efficiency / power loss [W] at rated output voltage for rated value of the output current typical

10 W

switching characteristic / of the excess current

Iout = 1.0 ...1.5 x set value, switch-off after approx. 5 s

switching characteristic / of the current limitation

Iout = 1.5 x set value, switch-off after typ. 100 ms

switching characteristic / of the immediate switch-off

Iout > set value and Vin < 20 V, switch-off after approx. 0.5 ms

residual current at switch-off typical

1 mA

switch-off characteristic / design of the reset device/resetting mechanism

via sensor per output

Technical documents (1)

• Siemens data sheet 6EP1961-2BA21

Key features

• Four 24 V DC outputs, each up to 10 A
• Threshold adjustable 3-10 A per output
• Input 24 V DC, up to 40 A
• Common signaling contact; remote reset input

About the Siemens 6EP1961-2BA21

The Siemens 6EP1961-2BA21 is the SITOP PSE200U selectivity module with four outputs and a common signaling contact. Siemens's data sheet gives an input of 22-30 V DC at up to 40 A, four outputs rated 10 A each up to 60 °C, a switch-off threshold adjustable from 3 to 10 A per output, and a remote reset input. SiePortal lists it as an active product.

What is the 6EP1961-2BA21 used for?

It sits behind a 24 V DC supply and divides its output into four protected circuits, so an overload or short circuit on one circuit switches off only that circuit and not the whole 24 V supply.

Lifecycle and successor

Active product (Siemens SiePortal).

Before you order

What to photograph or confirm so the right unit is quoted.

Check the order number: the -2BA21 version has a common signaling contact. Note the threshold set on each channel so the replacement can be set the same way.