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ZIEHL industrie-elektronik, 74523 Schwäbisch Hall, Germany, +49 791 504-0, info@ziehl.de, www.ziehl.de
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PTC-resistor relays type MS
PTC-relay for the application as
a protection device against inad-
missible heating up at electrical
equipment in areas with explo-
sive gases (zones 1 and 2) and
areas with combustible dust (21
an 22), e.g. for direct temperatu-
re-monitoring of explosion-proof
motors EEx e and EEx d.
This compact version is espe-
cially suitable for mounting in
fuse-boxes or power-distribution
panels.
ATEX-approval according to
directice 2014/34/EU
SIL 1 nach IEC 61508
PL c nach ISO 13849
PTC-Resistor-Relay Type MS(R)220VA
Single PTC-Circuit, Atex-Approval according to Directive 2014/34/EU
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A1
14
11 12 NC Y1 Y2
A2
MS(R) 220 VA
Schwäb.Hal l www .zieh l.d e
T1
S3
U
e
= 250 V
I
e
= 3 A
AC 15
NC NC
Kaltleiter-
Relais
Reset
~/+ ~/–
ON
ALARM
Us
DC +
AC ~
–
~
S2
K1
k1
S1
H1
1)
1)
L3
L2
L1
1 … 6 PTC
M 3~
K1
F1-F3
F4
N
T2
Technical Data
Rated supply-voltageUs
connectable PTC-resistors
switching point
output relay
type of contaxt
test conditions
rated ambient temperature
dimensions (h x w x d)
attachment
protection housing/terminals
weight
AC 220 - 240 V ± 10 % 50/60 Hz ≤ 2 VA
AC/DC 24 V, AC ± 10 % DC 21- 30 V < 2 VA, without
potential separation
1...6 in series according toDIN 44081 or 44082
< 4000 Ω
1 change-over contact (co)
type 2 see "general technical information"
see "general technical information"
-20...+55 °C
design V2: 90 x 35 x 58 [mm]
on 35 mm DIN-rail or with 2 screws M4
IP 30 / IP 20
app. 120 g
Same execution as MS220VA,
additionally with electronic reclo-
sing lock. An alarm is stored until
a reset is made.
ATEX-approval according to
directive 2014/34/EU
SIL 1 nach IEC 61508
PL c nach ISO 13849
electronic reclosing lock (dis-
connectable)
integrated RESET-button
link for external reset
automatic reset at voltage
recovery
UL Recognized Component
Option:
- other supply-voltages
1 PTC-resistor (thermistor) set, each 1...6 PTC-
sensors
short-circuit monitoring of sensor-circuit
output-relay with 1 change-over contact (co)
2 LEDs for ON and ALARM
housing for mounting in fuse-boxes
mounting height 55 mm, 35 mm wide
assembly on DIN-rail or with 2 screws M4
UL Recognized Component
Option:
- other suppy-voltages
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Us = supply voltage
S1 = pushbutton OFF
S2 = pushbutton ON
S3 = external reset
H1 = trip alarm
F1 - F4 = fuses
K1 = contactor
1) MSR only
2017-06-16
II (2) G [Ex e] [Ex d] [Ex px]
II (2) D [Ex t] [Ex p]
II (2) G [Ex e] [Ex d] [Ex px]
II (2) D [Ex t] [Ex p]
Part number:
T222415 AC 220-240 V
Part numbers:
T222435 AC 220-240 V
T222431 AC/DC 24 V
MS220VA
MSR220VA