AC Voltage Stabilizator Modalis MR4500

Modalis MR 4500 AC Voltage Stabilizer 


Modalis MR 4500 signle-phase AC voltage stabilizer is part of the Modalis product range of Standard series voltage stabilizers.

Modalis MR 4500 voltage stabilizer is designed for protection of home and office appliances and industrial equimpent with aggregate power consumption of up to  4.5 kVA, (microwaves, circulation pumps, compressors, copy machines, etc).To power up an across-the-line motor (found in fridges, washing machines, compressor pumps, and high-pressure washers), the voltage stabilizer must have a reserve capacity that's 1.5-3 times greater than the motor's own capacity.

Modalis MR 4500 voltage stabilizer is designed as a desktop unit with indicator display and power switch on the front panel and screw terminal for connecting power supply and load cables on the back panel.






     Design features:

  • desktop case;
  • toroidal power autotransformer;
  • double load protection from critically high input voltage;
  • automatic disconnection of autotransformer in case of input voltage surge over 300V with subsequent automatic reactivation once a safe voltage has been restored;
  • compulsory cooling procedure (built-in smart fan);
  • discrete (step-by-step) adjustment of output voltage;
  • wide range of input voltage;
  • high overload capacity;
  • thyristor power-switching circuits;
  • fast response time;
  • electronic overload and short-circuit protection featuring automatic disconnection;
  • ability to work at declared load power within the entire range of input voltages;
  • automatic power cutoff when input or output voltage exceeds the preset threshold with subsequent automatic reactivation after voltage is restored to levels within the allowed range of operation;
  • manual bypass;
  • output and input power filter to suppress high frequency distortions;
  • LED indicators of operating modes and main parameters (input and output voltage, load power);
  • screw terminal for connecting power supply and load cables.

Product specifications


Number of phases 1
Maximum load capacity, kVA 4,5
Admissible overload 100% - 10s
Effective range of input phase voltage, V 165-265
Extreme range of input phase voltage, V 145-285
Rated input frequency, Hz 50±2
Input frequency range, Hz 48-52
Output phase voltage stabilization, % ±5
Effective range of output phase voltage, V 219-241
Extreme range of output phase voltage, V 190-252
Number of correction levels 7
Energy conversion efficiency, % 95
Range of load change, % 0...100
Load power factor 0-1
Type of switches thyristor power circuits
Time of voltage adjustment for one correction level, ms <=30
Overload and short-circuit protection electronic, with automated switch
EMI/RFI filter input/output
Extrenal temperature range, °С +1...+40
Relative air humidity, % 0...80
Cooling procedure compulsory
Protection rating IP20
Weight, kg 27
Overall dimensions (WxHxD), mm 441 x 260 x 400
Warranty, months 24
Service life period, years 10


pdf Manual