LVMA LMGQ5 Digital VA Protector | Over/Under Voltage Current Protector

LVMA LMGQ5 Digital VA Protector | Over/Under Voltage Current Protector

Model: LMGQ5-63
Rated Voltage: 220V
Rated Current: 63A
Pole: 2 Pole/4 Pole
Voltage Detection Error: ≤1%
Output Voltage: Over / Under Voltage (1s) Phase, Failure/ Phase Sequence (1s)
Electrical Life: 100000 time
Mechanical Life: 1 Million time
Ambient Temperature: -20°C~55°C
Maximum Wire Area: 25m²

Model: LMGQ5-63
Rated Voltage: 220V
Rated Current: 63A
Pole: 2 Pole/4 Pole
Voltage Detection Error: ≤1%
Output Voltage: Over / Under Voltage (1s) Phase, Failure/ Phase Sequence (1s)
Electrical Life: 100000 time
Mechanical Life: 1 Million time
Ambient Temperature: -20°C~55°C
Maximum Wire Area: 25m²

1. Product Overview

The LVMA Digital VA-Protector is an intelligent, DIN-rail mount protection device designed to monitor and protect single-phase AC 230V electrical systems from overvoltage, undervoltage, overcurrent, and overload conditions. Featuring a dual digital display for real-time voltage and current readings, this device allows users to set adjustable protection thresholds, ensuring reliable safety for home appliances, industrial equipment, and commercial electrical systems. Its compact design and user-friendly interface make it ideal for installation in distribution boxes, control panels, and residential meter boxes.

2. Key Specifications

Parameter Details
Rated Voltage AC 230V / 50Hz
Rated Current 1-63A (adjustable)
Protection Functions Overvoltage, Undervoltage, Overcurrent, Overload
Voltage Setting Range 160-280V (adjustable)
Current Setting Range 1-63A (adjustable)
Response Time ≤0.1s
Display Type Dual LED digital display (voltage + current)
Mounting Type 35mm DIN rail mount
Enclosure Rating IP20
Operating Temperature -10°C ~ +60°C
Housing Material Flame-retardant PC (UL94 V-0)
Reset Mode Automatic / Manual selectable

Option Code Options Maximum Minimum Default
P-1 Power-on delay 999 1 5
P-2 Recovery delay 999 1 30
P-3 Overvoltage 300 130 270
P-4 Overvoltage recovery 295 125 265
P-5 Undervoltage 210 80 170
P-6 Undervoltage recovery 215 85 175
P-7 Over/Undervoltage action time 10.0 0.1 0.5
P-8 Voltage correction +9.9% -9.9% 0
P-9 Overcurrent protection 63.0 0.1 63.0
P-10 Overcurrent action time 10.0 0.1 1.0
P-11 Continuous overcurrent times 20 0 off
P-12 Current correction +9.9% -9.9% 0
P-13 Frequency correction +2.5% -2.5% 0
P-14 Active power correction +2.5% -2.5% 0
P-15 Temperature correction +5.0% -5.0% 0
P-16 Protection function switch on off on
P-17 Automatic Recovery on off on
P-18 Energy saving mode on off off

3. Core Features

Dual Digital Display: Real-time simultaneous monitoring of voltage and current with clear LED readouts for at-a-glance system status.

Adjustable Protection Thresholds: Set custom limits for overvoltage, undervoltage, and overcurrent to match specific equipment requirements.

Multi-Function Protection: Combines overvoltage, undervoltage, overcurrent, and overload protection in a single compact device.

DIN Rail Mount Design: Standard 35mm DIN rail form factor for easy installation in distribution boxes and control panels.

User-Friendly Interface: Simple button controls for quick setup, adjustment, and reset operations.

Automatic/Manual Reset: Choose between automatic recovery after faults or manual reset for added safety in critical applications.

Flame-Retardant Housing: UL94 V-0 rated material prevents fire spread in case of electrical faults.

Compact & Space-Saving: 2-module width design minimizes space usage in crowded panels.

4. Applications

  • Residential home electrical systems and appliance protection
  • Commercial building distribution panels
  • Industrial equipment and motor control systems
  • Solar power grid-tie systems
  • HVAC and pump control circuits
  • Office and retail electrical distribution
  • Battery charging and power distribution systems

5. Why Choose LVMA Digital VA-Protector?

  • All-in-One Protection: Combines multiple safety functions in one device, reducing installation complexity and costs.
  • Real-Time Monitoring: Dual digital display provides continuous visibility into system voltage and current levels.
  • Flexible Configuration: Adjustable thresholds and reset modes make it suitable for a wide range of applications.
  • Reliable Safety: Fast response time and robust protection prevent costly damage to equipment from electrical anomalies.
  • Easy Installation: DIN rail mount and simple wiring allow for quick integration into new or existing systems.
  • Durable Construction: Flame-retardant housing and high-quality components ensure long-term performance in demanding environments.

6. Technical Documents & Support

  • Download the full datasheet for detailed specifications, wiring diagrams, and setup instructions.
  • Contact our engineering team for custom voltage/current ranges or OEM/ODM solutions for bulk projects.
  • Request a quote with your project details for competitive pricing and lead times.

1. Product Overview

The LVMA Digital VA-Protector is an intelligent, DIN-rail mount protection device designed to monitor and protect single-phase AC 230V electrical systems from overvoltage, undervoltage, overcurrent, and overload conditions. Featuring a dual digital display for real-time voltage and current readings, this device allows users to set adjustable protection thresholds, ensuring reliable safety for home appliances, industrial equipment, and commercial electrical systems. Its compact design and user-friendly interface make it ideal for installation in distribution boxes, control panels, and residential meter boxes.

2. Key Specifications

Parameter Details
Rated Voltage AC 230V / 50Hz
Rated Current 1-63A (adjustable)
Protection Functions Overvoltage, Undervoltage, Overcurrent, Overload
Voltage Setting Range 160-280V (adjustable)
Current Setting Range 1-63A (adjustable)
Response Time ≤0.1s
Display Type Dual LED digital display (voltage + current)
Mounting Type 35mm DIN rail mount
Enclosure Rating IP20
Operating Temperature -10°C ~ +60°C
Housing Material Flame-retardant PC (UL94 V-0)
Reset Mode Automatic / Manual selectable

Option Code Options Maximum Minimum Default
P-1 Power-on delay 999 1 5
P-2 Recovery delay 999 1 30
P-3 Overvoltage 300 130 270
P-4 Overvoltage recovery 295 125 265
P-5 Undervoltage 210 80 170
P-6 Undervoltage recovery 215 85 175
P-7 Over/Undervoltage action time 10.0 0.1 0.5
P-8 Voltage correction +9.9% -9.9% 0
P-9 Overcurrent protection 63.0 0.1 63.0
P-10 Overcurrent action time 10.0 0.1 1.0
P-11 Continuous overcurrent times 20 0 off
P-12 Current correction +9.9% -9.9% 0
P-13 Frequency correction +2.5% -2.5% 0
P-14 Active power correction +2.5% -2.5% 0
P-15 Temperature correction +5.0% -5.0% 0
P-16 Protection function switch on off on
P-17 Automatic Recovery on off on
P-18 Energy saving mode on off off

3. Core Features

Dual Digital Display: Real-time simultaneous monitoring of voltage and current with clear LED readouts for at-a-glance system status.

Adjustable Protection Thresholds: Set custom limits for overvoltage, undervoltage, and overcurrent to match specific equipment requirements.

Multi-Function Protection: Combines overvoltage, undervoltage, overcurrent, and overload protection in a single compact device.

DIN Rail Mount Design: Standard 35mm DIN rail form factor for easy installation in distribution boxes and control panels.

User-Friendly Interface: Simple button controls for quick setup, adjustment, and reset operations.

Automatic/Manual Reset: Choose between automatic recovery after faults or manual reset for added safety in critical applications.

Flame-Retardant Housing: UL94 V-0 rated material prevents fire spread in case of electrical faults.

Compact & Space-Saving: 2-module width design minimizes space usage in crowded panels.

4. Applications

  • Residential home electrical systems and appliance protection
  • Commercial building distribution panels
  • Industrial equipment and motor control systems
  • Solar power grid-tie systems
  • HVAC and pump control circuits
  • Office and retail electrical distribution
  • Battery charging and power distribution systems

5. Why Choose LVMA Digital VA-Protector?

  • All-in-One Protection: Combines multiple safety functions in one device, reducing installation complexity and costs.
  • Real-Time Monitoring: Dual digital display provides continuous visibility into system voltage and current levels.
  • Flexible Configuration: Adjustable thresholds and reset modes make it suitable for a wide range of applications.
  • Reliable Safety: Fast response time and robust protection prevent costly damage to equipment from electrical anomalies.
  • Easy Installation: DIN rail mount and simple wiring allow for quick integration into new or existing systems.
  • Durable Construction: Flame-retardant housing and high-quality components ensure long-term performance in demanding environments.

6. Technical Documents & Support

  • Download the full datasheet for detailed specifications, wiring diagrams, and setup instructions.
  • Contact our engineering team for custom voltage/current ranges or OEM/ODM solutions for bulk projects.
  • Request a quote with your project details for competitive pricing and lead times.

Data Download

LVMA low voltage selection manual

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