Contact protecting relays Typ: MSR
Application: Increasing the switching capacity of electromechanical contacts. Increase of contact life and prevention of oil combustion in oil-filled measuring devices by means of pulse-shaped control signals with a pulse-pause ratio of 1 : 100, which minimizes the probability of sparking at the contacts
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technical data sheet Approvals Case
Polyamide 6,6, green
Case dimensions
B x H x T : 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
Option
see technical data sheet
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