PTC-Thermistor-Relay Type MSR220Vi
PTC-resistor relay, single PTC-circuit, ATEX-Approval 2014/34/EU, intrinsic safe input, with RESET
Product description
Ziehl PTC thermistor relays protect motors, transformers, machines and equipment against thermal overload. These are according to DIN EN 60947-8 and are thus exchangeable. Used in conjunction with respective PTC thermistors they provide a reliable temperature protection in the temperature range 60 °C up to 180 °C.
PTC-thermistors according DIN 44081 and DIN 44082 shall be connected. PTC thermistors are suitable for the installation into windings of electrical machines, bearings and transformers as well as to monitor the temperature of liquid media, airflow and gases. With ATEX approval, explosion-protected equipment in explosive gas atmospheres (marking G: gas) or in areas with combustible dust (marking D: dust) can be protected.
Features
- ATEX directive 2014/34/EU
- 1 circuit for 1…6 PTC thermistors
- Short-circuit detection within the thermistor circuit
- electronic reclosing lock (disconnectable)
- integrated RESET-Button
- Link for external reset
- automatic reset at voltage recovery
- Output relay with 1 change-over contact (co)
- Operating status display with LED
- electronic reclosing lock (disconnectable)
- integrated RESET-button
- link for external RESET
- automatic RESET at voltage recoveryOperating status display with LED
Technical Data
Intrinsic safety circuit (T1, T2)
Voltage Uo
8,61 V
Current Io
61,7 mA
Power Po
0,133 W
Max. permissible values Co / Lo
explosive atmosphere IIC
Co (µF) / Lo(mH): 1,0 / 2,0
Co (µF) / Lo(mH): 1,3 / 1,0
Co (µF) / Lo(mH): 1,5 / 0,5
Max. ratio Lo / Ro
198 µH/Ohm
Rated Voltage Um
250 V
Rated supply voltage Us (see type plate)
AC 110-120 V
AC 220-240 V
AC 380-415 V
AC / DC 24 V (without potentially separation)
Tolerance of voltage Us
AC 0,9 Us -1,1 Us
Frequency (AC)
50 / 60 Hz
Tolerance of frequency
45 - 65 Hz
Power consumption
< 2 VA
PTC thermistor connection
PTC thermistor
acc. DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Number
1 ... 6 PTCs in series
Cut-out-point
3.3 kΩ…3.65 kΩ…3.85 kΩ
Reclosing point
1.7 kΩ…1.8 kΩ …1.95 kΩ
response tolerance
+/- 6° C
Collective resistance cold thermistor
≤1,65 kΩ
Terminal voltage (PTC thermistor)
≤ 2.5 V at R ≤ 3.65 kΩ
≤ 9 V at R = ∞
Terminal current (PTC thermistor)
<1 mA
Short circuit
20 Ω ≤ R ≤ 40 Ω
Power consumption
<2 mW
Relay output (EN 60947-5-1)
Contacts
change-over contact
Switching voltage max.
max. AC 415 V
Switching current max.
5 A
Switching power max. (ohm resistive load)
120 W at DC 24 V
1250 VA
Rated operational current (Ie)
AC15 Ie = 3 A Ue = 250 V
DC13 Ie = 2 A Ue = 24 V
Recommended fuse
4 A (gG)
Mechanical contact life
3 x 107 operations
Electrical contact life
1 x 105 operations at 240 V 5 A
Testing conditions (EN 60947)
Rated impulse voltage
4000 V
Overvoltage category
III
Contamination level
3 ..... 2
Rated insulation voltage Ui
250 V ..... 415 V
Transformer
EN 61558-2-6
On-period
100 %
Rated ambient temperature range
-20 ... +55 °C
EMC - Immunity
EN 61000-6-2
EMC - Emission
EN 61000-6-3
Vibration resistance EN 60068-2-6
2…13.2 Hz ± 1 mm
13.2 ... 100 Hz 1 g
Housing (Design V2)
Dimensions (H x W x D)
90 x 35 x 58 mm
Line connection
1 x 0,5 ... 2,5 mm2 (AWG 22 – 14)
Stranded wire with insulated ferrules
1 x 0.14 mm2 …1.5 mm2
Insulation strip length min.
8 mm
Tightening torque
0.5 Nm
Protection class housing EN 60529
IP 30
Protection class terminals EN 60529
IP 20
Fitting position
Any
Mounting
EN 60715 standard rail 35 mm
Optional: Screw mounting
M4, only with additional bolt (not part of delivery)
Weight
approx. 170 g
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