Leroy Somer AVR R438 Automatic Voltage Regulator For Generator

Input voltage0-110V: 95-140V,

0-220V: 170-260V, 0-380V: 340-520V,

frequency50/60 Hz

,Rated overload current8 A up to 10 sec,

External voltage regulation0.47KΩ/0.5W: ±5%, 1.5KΩ/0.5W: ±10%.Operating temperaturefrom -20°С to +70°С,

Dimensions140x124x50 mm.Weight750

Voltage Regulation ±0.5%
Remote voltage adjustment range ±0.5%
Short circuit capability 3 x Irated for 10 seconds
Standard power supply AREP or PMG
Rated overload current 8 A – 10 s
Voltage sensing 5 VA isolated via transforme
0-110V terminals 95 to 140V
0-220V terminals 170 to 260V
0-380V terminals 340 to 520V
Voltage regulation ± 1%
Current sensing C.T.2.5VA cl1,secondary 1 A
Voltage sensing 95~140 volts (50/60 Hz)
170~260 volts (50/60 Hz)
340~520 volts (50/60 Hz)
Fit for 1000 series generator
2000 series generator
3000 series generator




  • 100% Brand New And High Quality.
  • The R438 voltage regulator module can be powered by AREP or PMG field excitation system
  • Detection input: Voltage 95-480V AC; Power supply input: Voltage 40-150V AC three-phase for this automatic voltage regulator
  • Material: metal and plastic material voltage regulator, lightweight, tough and durable, can be used for a long time
  • Magnetic field output: when voltage input is 120V AC, max is 160V DC, max 10A for this brushless generator AVR
  • 95-480V automatic voltage regulator is a must-have item for your brushless generator
  • We are confident the quality of our product is 100% qualified. If there is any question, feel free to contact us. We will offer the best service for you. Thank you!
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