Adjustable Over‑Voltage Protection — Cuts power when phase voltage exceeds the set safe level to protect equipment from high‑voltage damage.
Adjustable Under‑Voltage Protection — Disconnects supply if phase voltage drops below the set threshold to avoid brown‑out damage.
Over‑Current Protection — Protects circuits from over‑current conditions with adjustable current limits.
Three‑Phase Balance & Asymmetry Protection — Detects phase imbalance (asymmetry) and trips to prevent damage to motors and other loads.
Phase Sequence Protection — Ensures correct phase order and prevents reversal faults that can damage three‑phase equipment.
Adjustable Timing Controls — Active time, reconnect delay, and power‑on delay are adjustable to fine‑tune protection response.
Manual Voltage & Current Calibration — Allows precise calibration of measurement ranges to match specific system requirements.
DIN‑Rail Mountable Design — Standard 35 mm DIN‑rail installation for easy panel mounting.
Wide Use Cases — Suitable for industrial, commercial, and residential three‑phase systems to protect motors, compressors, HVAC units, and other loads.
₨ 6,399 ₨ 7,999
The TOMZN TOVPD3‑VA 4‑Pole 3‑Phase Adjustable Voltage Protector is a DIN‑rail mounted safety relay designed to protect three‑phase electrical systems from common power quality issues. It continuously monitors all three phases and provides adjustable over‑voltage and under‑voltage protection, helping prevent damage to motors, compressors, HVAC units, and other critical equipment. In addition to voltage protection, the device includes over‑current protection, phase sequence and phase imbalance (asymmetry) detection, and adjustable delay settings for power‑off and reconnection timing, giving you precise control over protection behavior. Built for industrial, commercial, and residential three‑phase applications, it helps maintain stable and safe power delivery to your electrical loads.
| Specification | Details |
|---|---|
| Model / Type | TOMZN TOVPD3‑VA / TOVPD3‑63VA Three‑Phase Voltage & Current Protector |
| Pole Configuration | 4‑Pole (3 Phase + Neutral) |
| Rated Voltage | AC 3×220V / 3×230V / 3×380V depending on variant |
| Rated Frequency | 50 Hz / 60 Hz |
| Rated Load Current | 63 A (typical) |
| Over‑Voltage Protection Range | Adjustable ~230 V – 300 V |
| Over‑Voltage Recovery Range | ~220 V – 295 V |
| Under‑Voltage Protection Range | Adjustable ~140 V – 210 V |
| Under‑Voltage Recovery Range | ~145 V – 215 V |
| Over‑Current Protection Range | 3 A – 63 A |
| Active (Trip) Delay | 0.1 s – 30 s (adjustable) |
| Reconnect Delay Time | 1 s – 500 s (adjustable) |
| Power‑On Delay Time | 1 s – 500 s (adjustable) |
| Phase Sequence Protection | Yes (ON/OFF control) |
| Phase Imbalance (Asymmetry) Protection | Yes (adjustable asymmetry trip) |
| Voltage & Current Calibration | Manual adjustment ±9.5 % |
| Display (Optional) | Interactive Digital Voltage/Current Display (varies by model) |
| Mounting Type | 35 mm DIN‑Rail |
| Application | Industrial, Commercial & Residential Three‑Phase Systems Protection |
10-in-1 Smart Protection & Monitoring – Monitors voltage, current, leakage current, total kWh (energy) and protects your circuit.
WiFi Connectivity & App Control – Connects to your home Wi-Fi (2.4 GHz) and lets you remote ON/OFF control, monitor and adjust settings from the Smart Life / TUYA app on iOS/Android.
Adjustable Protection Settings – Set thresholds for over-voltage, under-voltage, over-current, and leakage current via the app or manually.
Voltage & Current Monitoring – Real-time display and tracking of line voltage and current in the app.
Leakage Current Protection – Detects leakage and cuts power to enhance electrical safety.
Energy Consumption Tracking – Shows total kWh usage so you can monitor and manage power consumption.
Scheduled Control & Timer – Create schedules to automate ON/OFF times for your circuits via the app.
Automatic Reconnection with Delay – After a fault trip, it can reconnect automatically with an adjustable delay (1 s to 500 s).
Calibration Feature – Allows calibration for voltage, current, and kW readings for better accuracy.
Voice Assistant Compatible – Works with Google Assistant / Alexa for hands-free control (where supported).
DIN-Rail Mountable – Standard design for installation in electrical panels.
4‑Pole Manual Changeover Switch – Designed for three‑phase systems (L1, L2, L3 + N), allowing safe switching between two AC power sources (e.g., main grid and backup).
63 A Rated Current – Suitable for moderate‑to‑heavy loads in residential, commercial, or industrial three‑phase installations.
Manual Transfer Switch Function (MTS) – Lets you manually switch power sources to maintain continuity when the primary supply fails.
Interlock Mechanism – Prevents simultaneous connection of both power sources, reducing the risk of short circuits and equipment damage.
DIN‑Rail Mountable – Standard 35 mm DIN‑rail installation for easy integration into electrical panels and distribution boards.
Flame‑Retardant Durable Build – Made of high‑quality insulating plastic for safety and reliability.
Compact & Robust Design – Space‑efficient construction suitable for crowded control enclosures.
Seamless Power Management – Helps manage dual power supply systems (e.g., grid & generator) where uninterrupted power is needed
3P + 3P Dual Power Manual Transfer Switch (MTS) – Lets you manually switch between two three-phase AC power sources (e.g., grid and generator/backup), ensuring continuous supply when one source fails.
Integrated Circuit Breaker (MCB) Protection – Combines transfer switch functionality with overload, short-circuit, under-voltage, and phase-loss protection in one unit for safer operation.
Three-Phase Compatibility (3P + 3P) – Designed for balanced switching of all three phases between two input sources, suitable for industrial, commercial, and large-load three-phase systems.
Wide Voltage & Frequency Support – Compatible with 230 V / 400 V AC and works on both 50 Hz and 60 Hz networks.
Manual Operation – User-controlled changeover without automation, giving direct control over which source is supplying power.
Wide Current Range – Available in various current ratings (e.g., 6 A up to 63 A), allowing selection based on load requirements.
High Breaking Capacity (~6 kA) – Built to safely interrupt fault currents and protect the circuit during overloads and short-circuit events.
DIN-Rail Mountable Design – Easy installation in electrical panels and distribution boards with standard DIN-rail mounting.
Dual‑Function Design: Acts as both a circuit breaker and a manual changeover/transfer switch to safely switch between two AC power sources (e.g., grid and generator).
63 A Rated Current: Supports loads up to 63 amps, suitable for larger circuits and subpanels.
2‑Pole Configuration: Provides simultaneous switching and isolation of live and neutral lines for safer operation.
Manual Operation: Simple hand‑operated transfer between main and backup power — no automation.
Integrated Isolation Feature: Includes a mechanical isolating function for safer maintenance and prevention of back‑feed.
Robust Construction: Made with flame‑retardant plastic and durable materials for reliability in industrial, commercial, and residential installations.
DIN‑Rail Mountable: Compact design for easy installation on a 35 mm DIN rail in distribution panels or electrical enclosures.
AC Voltage Compatibility: Typically used with standard 230 V–400 V AC systems at 50/60 Hz.
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