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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
Connection for temperature sensor with intrinsic
safety ignition protection type Ex ia IIC and Ex iaD
ATEX-approval according to directive 2014/34/EU
Safety Integrity Level SIL 1
1 PTC-resistor set (thermistors), each 1...6 PTC
Short-circuit monitoring of sensor-circuit
Output-relay with 2 change-over contacts
LEDs for ON and ALARM
Housing for mounting in switchgear-cabinet, 70 mm
wide, mounting height 55 mm
Assembly on DIN-rail 35 mm or screws M4
Option:
other supply-voltages
PTC-resistor relays type MS
PTC-Resistor-Relay Type MS(R)220Vi
Atex-Approval according to Directive 2014/34/EU, intrinsic safe input
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II (1) GD [Ex ia] IIC [Ex iaD]
II (1) GD [Ex ia] IIC [Ex iaD]
Same execution as MS220Vi,
additionally with electronic reclo-
sing lock. An alarm is stored until
a reset is made.
ATEX-approval according to
directive 2014/34/EU
Electronic reclosing lock (dis-
connectable)
Integrated RESET-button
Link for external reset
Automatic reset at voltage
recovery
Option:
other supply-voltages
PTC-relay for the application as
a protection device against inad-
missible heating up at electrical
equipment in areas with explosi-
ve gases (zones 0, 1 and 2) and
in areas with combustible dust
(zones 20, 21 and 22), e.g. for
direct monitoring in explosion-
protected areas where intrinsic
safety class "i" is aorded.
PTC-Sensors (Thermistors) of
intrinsic safety class "i" can be
connected directly. The sensors
may be placed in the potentially
explosive athmosphere, e.g. for
mechanical explosion-protection
at bearings.The relay itself may
not be installed in the potentially
explosive atmospheres.
2016-11-28
MS(R)220Vi
Kaltleiter-Relais
T2T1
A2A1 12 11 14
.com
PTC
Ue = 250 V
Ie = 3 A
AC 15
~
+
~
–
!
Us
NC 24 21 22 NC Y1 Y2
PA
ON
ALARM
Reset
S1
1)
1 … 6 PTC
Ex
1)
2)
L3
L2
L1
M
K1
F1-F3
S3
K1
k1
S2
F4
N
L1
H1
Us
DC +
AC ~
–
~
Ex = area of potentially
explosive atmosphere
PTC = Thermistor sensor
Us = supply voltage
S1 = external reset
S2 = pushbutton OFF
S3 = pushbutton ON
H1 = Trip alarm
F1-F4 = fuses
K1 = contactor
1) only MSR
2) twisted lines
Part number:
T222185 AC 220-240 V
Part numbers:
T222195 AC 220-240 V
T222191 AC/DC 24 V
MS220Vi
MSR220Vi
