OUV 400 (240/380V)

OUV 400 (240/380V)
Over & Undervoltage Relay

Availability: In stock


Over & Undervoltage Relay


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■        Microprocessor-based with highest accuracy

■        Manual test button for relay operation checking

■        Real-time monitoring of voltage levels

■        With over & undervoltage mode selection

■        Voltage monitoring ranges from 100 - 480VAC

■        Trip value recording (4-memory)

■        Integrated surge arrester against transient overvoltages

■        Tamper-proof design for settings protection

■        Serial interface RS485 for Modbus RTU communication (optional)

Type tested for EMC compliance in acc. with IEC 61000


Technical Data


Power supply

Dual voltage source AC110/240V   ± 15% (other voltages available on request)

Operating frequency


Overvoltage setting

100 - 130%

Undervoltage setting

70 - 100%

Operating time setting

0-60 sec



Operating and storage   temperature range

Operating -10°C to 55°C   Storage and transit -20°C to 65°C

Relative humidity (IEC   60068-2-30)

95% at +40°C

Degree of protection (IEC   60529)


Voltage withstand (IEC   60255-5)

2kVrms for lmin between all   case terminals connected together and the case earth terminal 2kVrms for lmin   between independent circuit including contact circuits

Power Consumption

Approximately <4VA

Vibration withstand capacity   (IEC 60255-2-1)

0.5G between 10Hz and 150Hz

Operational life expectancy

Electrical: > 1 x 105operations   Mechanical: > 5 x 106 operations

Output contact

AC 250V 5A

LED status indication

  •   (Normal operation)
  •   (Fault current detected)

Housing material

ABS resin complying with UL94VO

Unit weight

Approximately 550g

Compliance   with standards

IEC/EN 61000-4-2

Electrostatic-discharge   immunity test

IEC/EN 61000-4-3

Radiated, radio-frequency,   electromagnetic-field immunity test

IEC/EN 61000-4-4

Electrical fast   transient/burst immunity test

IEC/EN 61000-4-5

Surge immunity test

IEC/EN 61000-4-6

Immunity to conducted   disturbances, induced by radio-frequency fields

IEC/EN 60255-1

Measuring relay and protection   equipment

IEC/EN 60255-5

Insulation coordination for   measuring relays and protection equipment - Requirement and tests