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Coupling Modules with
Spring Clamp Terminal Blocks
24 V AC/DC, 2 changeover contacts
KRA-F10/21-21
110 702 13
KRA-S-F10/21-21
manual
110 707 13
control facility
Technical Data
Input
Operating voltage U
24 V AC/DC
B
Power consumption at U
ca. 13 mA
B
Operating voltage range
0.85 ... 1.1 U
B
Protective circuitry
free wheeling diode
Response time
about 10 ms
Release time
about 5 ms
Indication of operating status
LED (green)
Output
Output material
2 changeover contacts
Contact material
AgPdAu
Switching voltage max.
250 V AC/DC
Making current (max. 4 s at 10 % ED) 2 A
Continous current
2 A
Breaking capacity
24 V DC / 30 W
(ohm resistive load)
50 V DC / 15 W
230 V DC / 50 W
250 V AC / 125 VA
Breaking capacity min.
24 V DC/ 20 mA
Mecanical endurance
2 x 10
switching cycles
7
Electrical endurance
at max. switching load
1 x 10
switching cycles
5
Switching frequency max.
at max. current
300 switching cycles/h
Electric strength
test voltage coil/contact
1500 V AC 50 Hz 1 min.
test voltage open contact
1000 V AC
Rated surge voltage U
4000 V
imp
Isolation per VDE 0110
rated voltage
250 V
overvoltage category
III
pollution degree
2
Temperature Range
Operating temperature range
-20 °C ... +55 °C
Storage temperature range
-25 °C ... +70 °C
Housing
Type of protection (EN 60 529)
IP20
Material
polyamide 6.6 V0
Wire cross section
solid wire
0.08 - 2.5 mm²
stranded wire w/o wire end sleeve
0.08 - 2.5 mm²
stranded wire with wire end sleeve
0.08 - 1.5 mm²
Dimensions B x H x T
11.2 x 88 x 60 mm
Weight
43 g
Mounting position
any
Mounting
Standard rail TH35
per IEC 60715
Description
These coupling modules are provided with spring clamp terminal
blocks allowing easy and quick wire termination. No tool is
required to terminate solid wires and stranded wires with end
sleeves. And to terminate stranded wires without end sleeves just a
screwdriver will do.
The terminated wires are easy to release with a screwdriver.
Declaration of Conformity.
The device meets the requirements of the CE guidelines.
Conformity was proofed. The declaration of conformity is available
at the manufacturer BTR NETCOM GmbH.
Notes Regarding Device Description
These instructions include indications for use and mounting of the
device. In case of questions that cannot be answered with these
instructions please consult supplier or manufacturer.
The indicated installation directions or rules are applicable to the
Federal Republic of Germany. If the device is used in other countries
it applies to the equipment installer or the user to meet the
national directions.
Safety Instructions
Keep the applicable directions for industrial safety and the
prevention of accidents as well as the VDE rules.
Technicians and/or installers are informed that they have to
electrically discharge themselves as prescribed before installation or
maintenance of the devices.
Only qualified personnel shall do mounting and installation work
with the devices, see section "qualified personnel".
The information of these instructions have to be read and under-
stood by every person using this device.
Symbols
Warning of dangerous electrical voltage
Danger
means that non-observance may cause risk of life,
grievous bodily harm or heavy material damage.
Qualified Personnel
Qualified personnel in the sense of these instructions are persons
who are well versed in the use and installation of such devices and
whose professional qualification meets the requirements of their
work.
This includes for example:
Qualification to connect the device according to the VDE specifi-
cations and the local regulations and a qualification to put this
device into operation, to power it down or to activate it by
respecting the internal directions.
Knowledge of safety rules.
Knowledge about application and use of the device within the
equipment system etc.
Switch (KRA-S-F10/21-21)
Breaking capacity max.
24 V / 50 mA AC/DC
Breaking capacity min.
20 mV / 1 µA AC
Mecanical endurance
5 x 10² switchings
Test voltage
500 V 50 Hz 1 min.
Switch Positions
ON
OFF
AUTO
Mounting
On standard rail TH35 per IEC 60715, in junction boxes and / or
on distribution panels.
Installation
Electric installation and device termination shall be done by
qualified persons only, by respecting the VDE specifications
and local regulations.
BTR NETCOM GmbH
Phone: +49 7702 533-0
Im Tal 2
Fax:
+49 7702 533-433
78176 Blumberg - Germany
www.btr-netcom.com
1. Power down the equipment.
10 mm
2. Strip the wire by 10 mm. Wire cross section:
solid wire
0.08 - 2.5 mm²
stranded wire w/o end sleeve
0.08 - 2.5 mm²
stranded wire with end sleeve
0.08 - 1.5 mm²
a) Solid wires and wires with end sleeves are plugged directly.
Insert the wire straight into the contact and press until the wire
snaps in the spring.
b) When terminating stranded wires without end sleeves it is
necessary to open the spring with a flat-bladed screwdriver
(blade width max. 3.0 mm): enter the screwdriver to the upside
test sleeve, enter the wire straight to the contact and remove
the screwdriver.
3. Device connection per wiring diagram.
4. Release a Wire
Open the spring by inserting a
flat-bladed screwdriver (blade
width max 3.0 mm) to the test
sleeve situated below the contact
and remove the wire.
5. Release the Module from the DIN Rail
Slightly push in the clamp at the bottom of the module with a flat
bladed screwdriver and draw off upwards.
Connecting Bridge
The connecting bridge (P/N 110 728) allows to interconnect up to
10 coupling modules (total currenct max. 2 A ).
Cut the needed number of contacts with wire cutting pliers at the
respective predetermined cutting point. Then insert the connecting
bridge from the top into the contact slot and press it downwards
into place.
The tails of the connecting bridge carry potential,
therefore place the bridge in the middle of the
aligned modules to eliminate any accidential
touch.
5388/899001-02
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