PTC-Resistor-Relay Type MSR220K

PTC-resistor relay, single PTC-circuit, with Reset

PTC-Resistor-Relay Type MSR220K

Part number

AC 220 - 240 V
2 contacts
AC/DC 24 V
2 contacts

Approvals

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

Functional overview

  • 1 PTC-resistor set with up to 6 PTC-sensors (250Ω) in series
  • output relay with 1 or 2 change-over contact (co)
  • operating status display with LED
  • K-Housing, vertical terminal order
  • width 22.7 mm
  • snap mounting on 35 mm standard DIN rail or screw mounting
  • electronic reclosing lock (disconnectable)
  • integrated RESET-button
  • link for external RESET
  • automatic RESET at voltage recovery
  • LEDs for power ON (green) and ALARM (red) in reset-button
  • UL recognized component
  • Option: other supply voltages

 

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 according DIN 44081 or 44082

 

Switching point

.......

< 4000 Ω

 

Output relay

.......

1 or 2 change-over-contact (co)

 

Type of contact

.......

Type 2 (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. 150 g