Modular | Digital Voltage Monitoring Relay for Solar Power | Photovoltaic Systems | 1F | 16A | 230–270V | DIN | VP-16Af DigiTOP

Technical Specifications:

Type: Single‑phase overvoltage protection relay

Designed for use with: Photovoltaic systems and household appliances

Nominal load: 10 A

Maximum load: 16 A

Operating voltage: 50–400 V AC

Mains frequency: 50 Hz

Disconnection time: 0.02 s

Adjustable switching-off voltage range: 230–270 V (1 V increments)

Hysteresis (voltage drop difference): 1–10 V (1 V increments)

Switch‑on delay time: 0–10 s (1 s increments)

Contact configuration: Changeover contact (NO + NC)

Mounting: 2‑module width, DIN‑rail

Functions:

Monitors mains voltage in real time and reacts to overvoltage

Automatically disconnects load when voltage exceeds threshold

Allows connecting an auxiliary load during overvoltage (e.g., resistor or energy sink)

Three programmable parameters:
– Upper voltage disconnection threshold
– Hysteresis (gap between ON and OFF)
– Switch‑on delay

Extremely fast response—only 20 ms

Applications:

In photovoltaic plants, where protection from high voltage is needed

Protection of household appliances such as refrigerators, air‑conditioners, chargers

In industrial sites prone to sudden voltage fluctuations

In renewable energy installations with unpredictable loads

Automatic protection against voltage spikes, a common issue in rural areas or buildings with old infrastructure

Pros:

Fast response time

Programmable settings – customizable for different scenarios

Versatile – suitable for both homes and photovoltaic systems

Easy DIN‑rail installation

Cons:

No protection against undervoltage

Designed for single‑phase systems only

Requires proper programming – incorrect settings may cause unnecessary disconnection

Description:

The DigiTOP VP‑16Af is a smart, reliable, and cost‑effective voltage protection relay, ideal for photovoltaic systems and safeguarding household appliances. Its easy installation, programmable settings, and ultra‑fast reaction make it an indispensable solution for anyone wanting to protect their equipment from grid disturbances. A guarantee of safety for both professionals and everyday users.