PTC-Thermistor-Relay Type MSR220KA
  • PTC-Thermistor-Relay Type MSR220KA

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Manufacturer: ZIEHL

MSR220KA PTC thermal relay

PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.
  • ATEX approval according to directive 2014/34/EU
  • SIL 1 according to IEC 61508
  • PL c according to ISO 13849
  • 1 PTC-resistor (thermistor) set, each 1...6 PTC-sensors
  • short-circuit monitoring of sensor-circuit
  • output-relay with 1 or 2 change-over contacts (co)
  • electronic reclosing lock (disconnectable)
  • integrated RESET-button
  • link for external reset
  • automatic reset at voltage recovery
  • RESET-Button with integrated LEDs for power-ON (green) and ALARM (red)
  • K-housing, vertically arranged terminals housing 22.5 mm wide
  • assembly on DIN-rail or with 2 screws M4 (option)
  • UL Recognized Component
  • Option: other supply voltages


Part number:
T222475 AC 220-240 V 2 contacts
T222471 AC / DC 24 V 2 contacts
T222473 AC 110-120 V 2 contacts
T222476 AC 380-415 V 2 contacts
 



Technical data


Rated supply voltage Us 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
Connectable PTC resistors 1...6 PTC in series according DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Switching point <4000 Ω
Output relay 1 or 2 change-over-contact (co)
Type of contact Type 2 (see general technical information)
Test conditions see general technical information
Rated ambient temperature -20 ... + 55 ° C
Dimensions h x w x d Design K: 75 x 22.5 x 115 [mm]
Attachment on 35 mm DIN rail according to EN 60 715 or screws M4
Protection Housing/Terminals IP30 / IP20
Weight approx. 150 g

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PTC-relay for the application as a protection device against inadmissible heating up at electrical equipment in areas with explosive gases (zones 1 and 2) and areas with combustible dust (21 and 22), e.g. for direct temperature-monitoring of explosion-proof motors EEx e and EEx d. Vertically arranged terminals. Each terminal remains accessible even if all others are already occupied.
  • ATEX approval according to directive 2014/34/EU
  • SIL 1 according to IEC 61508
  • PL c according to ISO 13849
  • 1 PTC-resistor (thermistor) set, each 1...6 PTC-sensors
  • short-circuit monitoring of sensor-circuit
  • output-relay with 1 or 2 change-over contacts (co)
  • electronic reclosing lock (disconnectable)
  • integrated RESET-button
  • link for external reset
  • automatic reset at voltage recovery
  • RESET-Button with integrated LEDs for power-ON (green) and ALARM (red)
  • K-housing, vertically arranged terminals housing 22.5 mm wide
  • assembly on DIN-rail or with 2 screws M4 (option)
  • UL Recognized Component
  • Option: other supply voltages


Part number:
T222475 AC 220-240 V 2 contacts
T222471 AC / DC 24 V 2 contacts
T222473 AC 110-120 V 2 contacts
T222476 AC 380-415 V 2 contacts
 



Technical data


Rated supply voltage Us 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
Connectable PTC resistors 1...6 PTC in series according DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Switching point <4000 Ω
Output relay 1 or 2 change-over-contact (co)
Type of contact Type 2 (see general technical information)
Test conditions see general technical information
Rated ambient temperature -20 ... + 55 ° C
Dimensions h x w x d Design K: 75 x 22.5 x 115 [mm]
Attachment on 35 mm DIN rail according to EN 60 715 or screws M4
Protection Housing/Terminals IP30 / IP20
Weight approx. 150 g