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 |
1‑Pole Configuration: Single‑pole fuse holder for one DC circuit/string in a PV system.
Wide Fuse Compatibility: Works with 10×38 mm PV fuse links rated from around 3 A up to 30 A (varies by model and application).
Robust Construction: Made from high‑temperature resistant plastic with good insulation for safer DC operation.
DIN‑Rail Mountable: Standard 35 mm DIN rail mounting allows easy installation in PV combiner boxes and DC panels.
Essential PV Protection: Acts as a base for fuse links that protect against overcurrent, overloads, and short‑circuit faults in solar strings.
2P + 2P DC Manual Transfer Switch (MTS) – Lets you manually switch between two DC power sources in a photovoltaic (PV) setup, such as a solar array and a backup battery bank.
Dual Power Operation – Designed for DC dual power systems to ensure continuity of power without automatic switching.
Rated for High DC Voltage: Supports up to 1000 V DC, meeting common PV system requirements.
Integrated Circuit Breaker Protection: Combines manual transfer switching with overload and short‑circuit protection in one unit.
2P + 2P Pole Structure: Provides full protection and switching for two separate DC sources (each 2‑pole).
Rated Current Options: Available (commonly) at 63 A and potentially other ratings depending on model.
DIN‑Rail Mountable: Compact design fits standard 35 mm DIN rails in PV combiner boxes and DC distribution panels.
WiFi Smart Control — Remotely turn ON/OFF the circuit from your smartphone using the Smart Life / Tuya app.
Energy Monitoring (kWh) — Tracks real-time energy usage, including voltage, current, power, and total kWh.
Scheduling & Timer Functions — Set schedules, countdowns, and loop timers for automated circuit control.
Over/Under Voltage Protection — Protects connected equipment by tripping when voltage goes too high or too low.
Over-Current & Over-Power Protection — Trips the breaker if current or power exceeds safe limits.
Real-Time Metering — Displays voltage (V), current (A), and active power (W) in the app.
Voice Assistant Compatible — Works with Amazon Alexa & Google Assistant for hands-free control.
Relay Last Status Memory — Remembers the last ON/OFF state after a power outage.
Durable Design — Built with flame-retardant materials and supports DIN-rail installation.
Wide Operating Range — Works with AC 90–300 V and supports 2.4 GHz Wi-Fi (not 5 GHz
4-Pole Surge Protection Device (SPD) – Designed to protect three-phase AC systems plus neutral from voltage surges and transient over voltages.
High Surge Current Handling – Built to absorb surge currents (typically around 20 kA–40 kA depending on rating) to protect equipment from lightning strikes and switching transients.
Designed for Low-Voltage AC Networks – Works with 230/400 V AC at 50/60 Hz, making it suitable for residential, commercial, and light industrial electrical panels.
Fast Response & Low Let-Through Voltage – Quickly clamps and diverts excess surge energy to ground, reducing the risk of damage to sensitive electronics.
DIN-Rail Mountable – Compact, DIN-rail design for easy installation in distribution boards and sub-panels.
Thermal Disconnect Protection – Often includes thermal disconnection mechanisms for added safety if internal components overheat.
Visual Status Indicators – Many models use simple status windows/LEDs (green for normal, red for fault) to show device health and when replacement is needed.
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