Modular Digital Voltage Control Relay | 1-phase | 40A | VP-40A G3W DigiTOP

Technical Specifications:
Voltage: 50–400 V AC
Frequency: 45–65 Hz
Rated Current: 40A  
Max Load: 50 A
Measurement Method: TrueRMS (true root mean square)
Trip Time on Overlimit: 0.02 s
Lower Voltage Limit (adjustable): 120–200 V (factory default – 170 V)
Upper Voltage Limit (adjustable): 210–270 V (factory default – 250 V)
Delay on Power‑Up (adjustable): 5–600 s (factory default – 15 s)
Response Below 120 V: up to 0.02 s
Response Between 120–200 V: no longer than 1 s
Enclosure Size: 2 DIN modules
Mounting: 35 mm DIN rail
Display Color: White
Temperature Protection: Yes (with internal temperature indication)

Functions:

Continuous mains voltage monitoring (TrueRMS – accurate even with distorted waveforms)

Automatic device disconnection when voltage limits are exceeded

Automatic reset when voltage returns to safe range

User‑settable turn‑on delay – suitable for sensitive equipment

Built‑in thermal protection to prevent overheating

Visual status indication – easy monitoring of relay operation

Applications:

Protection for household appliances (refrigerators, washing machines, air conditioners, TVs)

Protection of electronic systems sensitive to voltage fluctuations

Usage in homes, flats, summer cottages, garages, workshops

In offices or small business electrical installations

Also suitable as preventive protection for sensitive industrial systems (single‑phase)

Pros:

High accuracy TrueRMS voltage measurement

Adjustable voltage thresholds and delay timers to meet needs

Thermal protection – longer lifespan and added safety

Suitable for both professional and home users

Auto‑reset – convenience without manual intervention

Cons:

Only for single‑phase systems – not suitable for three‑phase

No Wi‑Fi or remote control (programmable only via physical interface)

Summary:
A reliable, functional voltage relay providing a robust solution for electrical installation protection in both household and industrial settings. Combining precision, ease of use, and advanced protection features, this relay helps prevent costly equipment damage or malfunctions.