PTC-Relay MSF220K

PTC-Resistor-Relay for Dry-Transformers, 2 PTC-Circuits

PTC-Relay MSF220K

Order-number

T221718
AC 220 - 240 V (replaces T221716)
T221717
AC/DC 24 - 240 V (replaces T221715)

Approvals


Product description

 

PTC-relay for the monitoring of dry transformers. Alarm 1 with relay in closedcircuit current mode for preliminary warning, releases at over-temperature at PTC-set 1 and serves at the same time as functional monitoring. Alarm 2 in operating current mode. Thus no wiping signal occurs when switching on the supply voltage on. Additional terminals enable comfortable wiring from supply voltage to relays K1 and/or K2.

Changes from T221715/T221716 to T221717/T221718 (cURus, monitoring of sensors activatable, improved test function)

 

Functions

  • 2 PTC resistor sets
  • 2 output relays 1 change-over contact (co)/ 1 normally open contact (no)
  • monitoring of sensors for short-circuit and break activatable
  • TEST-button (delayed)
  • LEDs for ON, alarm 1 and 2
  • red LEDs for alarm 1 and alarm 2
  • K-type housing
  • Housing for mounting on DIN-rail 35 mm or wall-mount with screws M4
  • alternative to foreign product type TS-01

 

Technical data

 

Rated supply voltage Us

.......

AC 220 - 240 V ± 10 %, 50/60 Hz, ≤ 2 VA
AC/DC 24 - 240 V, AC19 - 264 V, DC 20 - 297 V < 2 VA,
 

Connectable PTC resistors

.......

2 x 1...6 PTC according to DIN 44081 or 44082

 

Switching point

.......

< 4000 Ω

 

Output relay

.......

1  change-over-contact (co), 1 normally-open contact (no)

 

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. 110 g

 

T221717 replaces model T221715
T221718 replaces model T221716