WIP Phase Protection 380V W-OP4
WIP Phase Protection 380V W-OP4
The WIP Phase Protector, model W-OP4

WIP Phase Protector

Brand: WIP Electric | SKU: VW-OP4

Regular price
1,072 ฿ 1,002 ฿ - ex-VAT 1,002 ฿ - ex-VAT
Regular price
2,680 ฿
Sale price
1,072 ฿ 1,002 ฿ - ex-VAT
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WIP Phase Protection 380V W-OP4

The WIP Phase Protector, model W-OP4.
The W-OP4 Phase Protection Relay is a digital electronic instrument designed for AC voltage monitoring and protection in 3 phase 4 wire and 3 phase 3 wire system. Used in application such as main failure, phase unbalance, under and over voltage. When the measured voltage moves outside the set-point limit, the relay will de-energize after the time delay, it operates automatically and shut down your motor before any damage is done. The relay will automatically reset to energize when the input voltage is raised past the set-point plus the hysteresis value, LED gives indication of actual fault that caused the trip. Display “ON” indicates when the relay is energized. The case can be mounted on a DIN rail 35 mm and adapter plate is available for wall mounting.

AC voltage protectors offer user adjustable set-point. The set-point adjustment between 10% and 20% of the nominal supply for over voltage unit and between 2% and 20% for the under and voltage unbalance. The time delay function can be used to prevent nuisance tripping due to any phase fail. The last fault can be checked by pressing “ ”and the LED will show the fault condition. Line voltage is selected with Dip switch on top 380, 400 or 415 VAC. The trip-point is automatically calculated by the microcontroller.

Phase Protection Relay "WIP" W-OP4 3Phase 4 Wire 220Vac.,380 VAC. Monitor and protect Under Voltage/Over Voltage/Unbalance Voltage.

  • - IP20
  • - Size 55x76x106mm.


Feature Approved standard : CE Mark Power consumption : 0.9 w/phase Input voltage : 220, 380, 400, 415 and 440 VAC 380, 400 or 415 VAC 3Ø (Selectable) System frequency : 50/60 Hz. Accuracy : ± 0.5% of normal voltage Display : 7-segment Red LED Letter 0.39” (9.90mm) Range Over voltage (OV) : Adjustable from 10% to 20% Under voltage (UV) : Adjustable from 2% to 20% Unbalance voltage (UB) : Adjustable from 2% to20% Differential (Hysteresis) : Preset at 1% Time Delay off : UV and UB Adjustable 0-5 sec. OV preset at 2 sec. Relay output Output type : 2-pole change over (DPDT) Contact rating : 5A at 250VAC Operations : Mechanical : 2 x 107 times Electrical : 1 x 105 times Relay reset : Automatic Environmental Operating temperature : -10o C … +55o C Storage temperature : -10o C … +70o C Ambient humidity : Max 85%RH Enclosure Mounting : DIN rail 35mm Housing : ABS UL94V-0 Protection class : IP20 Wire fixing : Screw terminal block (3.5mm2 self lifting) Indicator : LED 3mm Dimension in mm : 55 x 76 x 106 Weight : 327 g