1MRS 750942-MUM
Combined Overvoltage and Undervoltage Relay
Technical Reference Manual
REU 523
51
Table 4.2.3-6 Signal outputs (SO1, SO2) and self-supervision (IRF) output
Rated voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 3.0 s 8 A
Make and carry for 0.5 s 10 A
Breaking capacity when the control circuit time-
constant L/R < 40 ms, at 48/110/220 V dc
1 A/0.25 A/0.15 A
Minimum contact load 100 mA at 24 V ac/dc
Table 4.2.3-7 Power outputs (PO1, PO2)
Rated voltage 250 V ac/dc
Continuous carry 5 A
Make and carry for 3.0 s 15 A
Make and carry for 0.5 s 30 A
Breaking capacity when the control circuit time-
constant L/R < 40 ms, at 48/110/220 V dc
5 A/3 A/1 A
Minimum contact load 100 mA at 24 V ac/dc
Table 4.2.3-8 Enclosure class
Front side IP 54 (flush-mounted)
Rear side, connection terminals IP20
Note!
A rear protective cover (accessory part) can be used to protect and shield the rear of the
case.
Table 4.2.3-9 Environmental tests
Specified service temperature range -10...+55 °C
Transport and storage temperature range -40...+70 °C according to the IEC
60068-2-48
Dry heat test According to the IEC 60068-2-2
Dry cold test According to the IEC 60068-2-1
Damp heat test, cyclic According to the IEC 60068-2-30
Table 4.2.3-10 Electromagnetic compatibility tests
EMC immunity test level requirements consider the demands in the generic standard
EN 50082-2.
1 MHz burst disturbance test, class III According to the IEC 60255-22-1
• Common mode 2.5 kV
• Differential mode 1.0 kV
Electrostatic discharge test, class III According to the IEC 61000-4-2
and IEC 60255-22-2
• For contact discharge 6 kV
• For air discharge 8 kV
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