PTC-Resistor-Relay Type MS220K2
PTC-Resistor-Relay, 2 PTC-circuits
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Product description
ZIEHL PTC-resistor relays protect motors, transformers, machines and equipment against thermal overload. With ZIEHL PTC Sensors MINIKA ® applied they offer best solutions for nominal response temperatures 60°C…180°C.
ZIEHL PTC-resistor relays are designed for PTC-sensors according to DIN 44081 and DIN 44082. Therefor sensor and relays are exchangeable. PTC-resistor sensors 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.
Used in conjunction, they provide a effectively and reliable protection in case of
- blocking rotors, heavy starts, countercurrent operation
- undervoltage and phase failure
- increased ambient temperature and hindered cooling
The MS220K2 monitors 2 PTC resistor sets at the same time. If a temperature rise occurs in one set, the appropriate output relay releases. With this relay, 2 PTC-sets can be independently monitored.
Functional overview
- 2 PTC-resistor sets, each 1...6 PTC resistors, or bimetal contacts
- output relays 2 x 1 change-over contact (co)
- LEDs for operation and alarm
- UL-Recognized Component
Technical data
Rated supply voltage Us
AC 230 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
2 x 1...6 PTC according to DIN VDE V 0898-1-401 (formerly DIN 44081/82) or bitmetal contacts (Klixon)
Switching point
< 4000 Ω
Output relay
2 x 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 K: 75 x 22.5 x 115 [mm]
Attachment
on 35 mm DIN rail according to EN 60 715 or screws M4 (option)
Protection Housing/Terminals
IP30/IP20
Weight
approx. 145 g
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