PTC-Resistor Relay Type MS220C
  • PTC-Resistor Relay Type MS220C

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Manufacturer: ZIEHL

MS220C PTC thermal relay

This compact device is the smallest version of all our PTCresistor relays.
  • terminals outside
  • protection terminals IP 20
  • Relays 1 change-over-contact (co)

Part number:

T221830 24 V AC / DC
T221804 AC 220-240 V



Technical data


Rated supply voltage Us AC 220 - 240 V ± 10% 50/60 Hz ≤ 2 VA
AC / DC 24 V, AC ± 10 / -15%, DC + 25 / -20%, <1 W, <2 VA,
without potential separation
Connectable PTC resistors 1...6 PTC according DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Switching poin <4000 Ω
Output relay 1 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 C: 72 x 33 x 60 [mm]
Attachment on 35 mm DIN rail according to EN 60 715 or screws M4
Protection Housing/Terminals IP30 / IP20
Weight approx. 120 g

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This compact device is the smallest version of all our PTCresistor relays.
  • terminals outside
  • protection terminals IP 20
  • Relays 1 change-over-contact (co)

Part number:

T221830 24 V AC / DC
T221804 AC 220-240 V



Technical data


Rated supply voltage Us AC 220 - 240 V ± 10% 50/60 Hz ≤ 2 VA
AC / DC 24 V, AC ± 10 / -15%, DC + 25 / -20%, <1 W, <2 VA,
without potential separation
Connectable PTC resistors 1...6 PTC according DIN VDE V 0898-1-401 (formerly DIN 44081/82)
Switching poin <4000 Ω
Output relay 1 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 C: 72 x 33 x 60 [mm]
Attachment on 35 mm DIN rail according to EN 60 715 or screws M4
Protection Housing/Terminals IP30 / IP20
Weight approx. 120 g