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MSR
Contact protecting relays

Service intended: These relays provide higher contact rating of electromechanical contacts, increase the service life of contacts and avoid burning of oil in oil fi lled measuring equipment by means of pulse type control signals in the ratio of 1 : 100, minimizing the possibility of switching spark formation.

 

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Downloads
Technical Details
Operation Manual
Declaration of conformit
Technical Data
Case
Polyamide 6,6, green
Case dimensions
B x H x D :50 x 75 x 100 mm
Mounting
Snap mounting on rail: 35 mm to EN 50022
Weather protection
IP 20 to EN 60529
Wiring
Screwed connections
Cable cross section : 0,5 ... 2,5 mm2
Power supply
AC voltage : 230 V / 50 - 60 Hz / 22 mA
                 : 115 V / 50 - 60 Hz / 45 mA
                 : 24 V / 50 - 60 Hz / 40 mA
DC voltage : 24 V / 30 mA
DC voltage output
for external units
Power supply AC : 24 V DC +/- 10 % / 20 mA
Power supply DC : auxiliary energy 1,4 V / 50 mA
Control signals
Control voltage : 35 - 40 V DC
pulse Pulse- / interval ratio : 0,5 / 50 ms ± 10 %
Switching threshold : 9,7 V ± 10 %
Direct impedance : 3300 Ohm, 100 nF ± 20 %
Contact resistor : ≤ 4700 ohm
Outputs
Potential free change-over contact
Pull in delay : 10 - 60 ms
Drop out delay : 450 ms
Breaking capacity : 1860 VA
Breaking voltage : 250 V, 50 Hz/100 V DC
Breaking current : 8 A AC/0,5 A DC
Permissible temperatures Tmin / Tmax
Ambient temperature: 0 ... 70°C
Optional extras
see Technical Details page 15.0102