LMGQ1 Adjustable Voltage & Current Protector DIN Rail 230V

LMGQ1 Adjustable Voltage & Current Protector DIN Rail 230V

Supply terminals:N,L
Rated supply voltage:AC 220V
Rated frequency:50/60Hz
>U setting range:130~300V
<U setting range:80~210V
Over-voltage trip delay:0.5s
Voltage accuracy:<1%
Max.operating phase voltage:350V
Max.operating current:40A/50A/63A/80A/100A
Altitude:≤2000m
Ambient temperature:-25°C~+50°C

Supply terminals:N,L
Rated supply voltage:AC 220V
Rated frequency:50/60Hz
>U setting range:130~300V
<U setting range:80~210V
Over-voltage trip delay:0.5s
Voltage accuracy:<1%
Max.operating phase voltage:350V
Max.operating current:40A/50A/63A/80A/100A
Altitude:≤2000m
Ambient temperature:-25°C~+50°C

1. Product Overview

The Adjustable Voltage & Current Protector is a compact, DIN rail mount protection device designed for single-phase 230V AC electrical systems. It provides fully adjustable overvoltage, undervoltage, and overcurrent protection, with a dual digital display for real-time monitoring of voltage and current levels. This device allows users to set custom protection thresholds, making it ideal for safeguarding home appliances, industrial equipment, and commercial power circuits from electrical anomalies.

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 high/low limits)
Current Setting Range 1-63A (adjustable overload limit)
Trip Delay Adjustable (prevents nuisance tripping)
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

3. Core Features

✅ Adjustable Protection Thresholds: Customize overvoltage, undervoltage, and overcurrent limits to match specific equipment requirements.

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

✅ DIN Rail Mount Design: Compact form factor fits standard 35mm DIN rails, ideal for installation in distribution boxes and control panels.

✅ Adjustable Trip Delay: Prevents nuisance tripping caused by transient voltage/current spikes.

✅ User-Friendly Interface: Simple SET/up/down buttons for quick setup and adjustment of protection parameters.

✅ 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.

✅ Wide Application Compatibility: Suitable for residential, commercial, and industrial single-phase AC systems.

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 This Adjustable VA Protector?

  • Customizable Protection: Adjustable thresholds allow tailored protection for different loads, from sensitive electronics to heavy machinery.
  • Real-Time Monitoring: Dual digital display provides continuous visibility into system voltage and current levels.
  • Flexible Configuration: Adjustable trip delay and reset modes make it suitable for a wide range of applications.
  • Easy Installation: DIN rail mount and simple wiring allow for quick integration into new or existing systems.
  • Reliable Safety: Fast response time and robust protection prevent costly damage to equipment from electrical anomalies.
  • 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 Adjustable Voltage & Current Protector is a compact, DIN rail mount protection device designed for single-phase 230V AC electrical systems. It provides fully adjustable overvoltage, undervoltage, and overcurrent protection, with a dual digital display for real-time monitoring of voltage and current levels. This device allows users to set custom protection thresholds, making it ideal for safeguarding home appliances, industrial equipment, and commercial power circuits from electrical anomalies.

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 high/low limits)
Current Setting Range 1-63A (adjustable overload limit)
Trip Delay Adjustable (prevents nuisance tripping)
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

3. Core Features

✅ Adjustable Protection Thresholds: Customize overvoltage, undervoltage, and overcurrent limits to match specific equipment requirements.

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

✅ DIN Rail Mount Design: Compact form factor fits standard 35mm DIN rails, ideal for installation in distribution boxes and control panels.

✅ Adjustable Trip Delay: Prevents nuisance tripping caused by transient voltage/current spikes.

✅ User-Friendly Interface: Simple SET/up/down buttons for quick setup and adjustment of protection parameters.

✅ 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.

✅ Wide Application Compatibility: Suitable for residential, commercial, and industrial single-phase AC systems.

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 This Adjustable VA Protector?

  • Customizable Protection: Adjustable thresholds allow tailored protection for different loads, from sensitive electronics to heavy machinery.
  • Real-Time Monitoring: Dual digital display provides continuous visibility into system voltage and current levels.
  • Flexible Configuration: Adjustable trip delay and reset modes make it suitable for a wide range of applications.
  • Easy Installation: DIN rail mount and simple wiring allow for quick integration into new or existing systems.
  • Reliable Safety: Fast response time and robust protection prevent costly damage to equipment from electrical anomalies.
  • 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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