Real Instruments

Real Instruments 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect Din-Rail Voltage Guard(White)

Name: Real Instruments 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect Din-Rail Voltage Guard(White)
Brand: Real Instruments
Price: 3161.00 INR
Availability: InStock

Deal score 90/100· Excellent deal37% off MRP· Near 90-day low

Based on current discount vs MRP and price history — not product quality reviews.

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About this product

The 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect (DIN-Rail) is an electrical safety device designed to protect three-phase equipment from voltage fluctuations. It continuously monitors the incoming voltage and automatically disconnects the load if the voltage rises above or falls below preset limits. Once the voltage returns to a safe range, the device automatically reconnects the equipment, ensuring continuous protection without manual intervention. • Voltage Guard • Category: Mainline • Phase: 3 • Color: White

Specifications

General

Key highlights: Voltage Guard · Category: Mainline · Phase: 3 · Color: White
Additional details: Voltage Guard | Category: Mainline | Phase: 3 | Color: White
Brand: Real Instruments
Color: White
Cooling: Air Cooling
Generator Compatibility: Yes
Model ID: 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect
Model Name: 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect
Phase: 3
Product Id: VSTHHZKFB5PHJ3FH
Supported Appliance Capacity: NA
Type: Voltage Guard
Used For: Mainline

Additional Features

Insulation: Yes
Key Features: Protects motors, compressors, and industrial equipment from overvoltage and undervoltage conditions., Restores power automatically when the voltage returns to the preset safe range, reducing downtime., Set high and low voltage thresholds according to your system requirements for precise protection., Compact design for easy installation in control panels and industrial cabinets., Visual indicators show operating status, faults, and tripping events for easy monitoring., Prevents false tripping due to short-term voltage fluctuations or transient spikes., Designed for industrial environments, ensuring durability and long-term protection., Suitable for pumps, fans, compressors, HVAC systems, and general three-phase machinery.
Other Features: Detects if one of the three phases is lost or drops out, and protects equipment from running on an imbalanced supply., Adjustable time delay settings allow you to control how long the device waits before tripping or reconnecting — useful for avoiding nuisance trips during transient surges., Prevents damage by detecting and protecting against incorrect phase sequence connections., Designed to handle a broad range of incoming voltages, making it suitable for varying supply conditions., Built‑in filters reduce false tripping caused by electrical noise or spikes from motors and large equipment., Some models remember the last protection status after a power cycle so you can quickly diagnose what happened., Internal circuitry is designed to remain stable under different temperature conditions, improving longevity., In addition to auto‑reconnect, some versions let you choose a manual reset for added safety after a serious fault.

Body

Material: ABS Plastic
Mount Type: Wall, Floor
Display Type: LCD
Master Switch: No
Indicator Type: LED
Surge Indicator: No
Other Body Features: Slim, modular body designed to snap onto standard DIN‑rails in control panels for space‑efficient installation., Durable enclosure that protects internal components from dust, vibration, and physical impact in industrial settings., Labeled screw terminals for easy wiring (L1, L2, L3, Neutral, Load, etc.) to minimize installation errors., Body may include a snap‑on mounting clip or locking tab to secure the device firmly on the rail., Status LEDs (Power ON, Trip/Protection Active, Voltage Normal) built into the front of the body for quick visual checks., Rectangular module shape that fits standard 35 mm DIN rails used in industrial panels.

Dimensions

Weight: 0.2 kg
W x H x D: 90 mm x 50 mm x 65 mm (9.0 cm x 5.0 cm x 6.5 cm)

In The Box

Sales Package: 1 X Voltage Protector, 1 X User Manual, 1 X Retail Box

Operational Conditions

Minimum Humidity (%) + Maximum Humidity (%): 10 - 90 %
Minimum Operating Temperature (° C) + Maximum Operating Temperature (° C): 10 - 70 degree C

Performance Features

Trip Delay: Yes
Audio Alarm: No
Manual Reset: Yes
Automatic Reset: Yes
Circuit Breaker: Yes
Spike Suppressor: Yes
Output Voltage Correction: Yes
Other Performance Features: You can set the over-voltage trip, under-voltage trip, and reconnect delay to match your system’s needs — preventing nuisance trips on generators or fluctuating supplies., The device reacts quickly (often within fractions of a second up to a few seconds) to voltage abnormalities, minimizing stress and damage to connected equipment., If voltage returns to safe levels but then fluctuates again, many units will retry reconnection automatically after the set delay., Normal operation, Under-voltage, Over-voltage

Power Features

Accuracy (%): +/- 1 % %
Power Rating (VA): 5 VA
Other Power Features: Low Self Power Consumption – Consumes very little power (typically ≤ 5 VA) for monitoring and control., Wide Frequency Compatibility – Supports standard 3-phase supplies up to 60 Hz., Auto Power Recovery – Automatically restores power after voltage returns to the safe range, without manual reset., No Battery Required – Operates directly from the mains supply; no internal battery backup needed., Electrical Isolation – Control circuitry is electrically isolated from the power line for safer operation., Stable Operation on Generator Supply – Works with generators when voltage thresholds and delay time are set correctly., Fail-Safe Cut-Off – Disconnects the load during abnormal voltage or phase conditions to protect equipment.
Maximum Frequency (Hz): 60 Hz
Minimum Frequency (Hz): 50 Hz
Maximum Input Power (V): 415 V
Minimum Input Power (V): 0 V
Nominal Input Power (V): 220
Maximum Output Power (V): 300 V
Minimum Output Power (V): 140 V
Maximum Spike Current (A): 63 A
Maximum Power Handling Capacity (W): 13860 W

Safety Features

Safety Features: No
Surge Protection: No
Overload Protection: Yes
Over Volt Protection: Yes
Other Safety Features: No, Fuse Protection, Automatic Cut-Off on Fault – Instantly disconnects the load during over-voltage, under-voltage, or phase fault conditions., Phase Loss Protection – Shuts down power if any phase fails, preventing motor and equipment damage., Phase Imbalance Protection – Detects uneven voltage across phases and trips to protect three-phase loads., Auto-Reconnect with Delay – Restores power only after voltage stabilizes, reducing risk from unstable supply., Over-Current Protection (model dependent) – Prevents damage due to overload conditions.
Under Volt Protection: Yes
Phase Reversal Protection: No

Real Instruments 3-Phase Automatic Over/Under Voltage Protector with Auto-Reconnect Din-Rail Voltage Guard(White)

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90-day price history

About this product

Specifications

General

Additional Features

Body

Dimensions

In The Box

Operational Conditions

Performance Features

Power Features

Safety Features

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