PTC-Resistor Relay MSF220V/ MSF220VU

PTC-Resistor-Relay, 3 PTC-circuits, for Dry-Transformers, intelligent van control

PTC-Resistor Relay MSF220V/ MSF220VU

Part number

AC 230/240 V
MSF220V
AC/DC 24/240 V
MSF220VU

Approvals

Product description

 

The MSF 220 V is particularly suitable for the temperature monitoring at dry transformers. 3 PTC-circuits with different nominal response temperatures (NRT) can be connected to this unit, one for controlling a fan (forced cooling) and two for alarms. Each PTC-circuit is monitored for break and short circuit. This reduces the probability of false alarms.

  • 3 PTC-circuits
  • MSF 220 VU for universal supply voltage AC/DC 24-240 V
  • intelligent control of fan (relay K0, 1 normally-open contact)
  • ALARM 1 in closed-circuit current mode (relay K1, 1 change-over contact) for pre alarm. Signals also error in any sensor and interruption of supply voltage.
  •  ALARM 2 in operation current mode (relay K2, 1 changeover contact). No signal when switching on and off the supply voltage.
  • all output relays potentially separated from each other.
  • monitoring of sensor lines
  • TEST-button (stop possible before ALARM 2)
  • Simple testing with disconnectable monitoring of break and short circuit  (for 10 minutes).
  • LEDs for ON, sensor error, Fan, ALARM 1 and ALARM 2
  • UL recognized component
  • plug-in terminals
  • housing for mounting on DIN-rail or wall-mount
  • mounting height 55 mm

 

Technical data

Rated supply voltage Us

.......

AC 220 - 240 V ± 10 %, 50/60 Hz ≤ 3 VA
AC/DC 24 V,  ± 15 %,  < 3 VA

 

Connectable PTC resistors

.......

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

 

Switching point

.......

< 4000 Ω

 

Output relay

.......

2 x 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 V4: 90 x 70 x 58 [mm]

 

Attachment

.......

on 35 mm DIN rail according to EN 60 715 or screws M4

 

Protection Housing/Terminals

.......

IP30/IP20

 

Weight

.......

approx. 320 g