Over Voltage Protection Devices Triple Display
Over Voltage Protection Devices Triple Display
This intelligent DIN rail protector is a multi-functional single-phase AC protection device with tri-color digital display for real-time voltage, current, power and frequency reading. It supports adjustable overvoltage, undervoltage, overcurrent and short-circuit protection, with configurable power-on delay, recovery delay and auto-reset function. Built-in energy metering and password lock prevent misoperation. Standard 35mm DIN rail design fits consumer units, widely used for home, villa and small commercial circuit safety protection against unstable power supply.
This intelligent DIN rail protector is a multi-functional single-phase AC protection device with tri-color digital display for real-time voltage, current, power and frequency reading. It supports adjustable overvoltage, undervoltage, overcurrent and short-circuit protection, with configurable power-on delay, recovery delay and auto-reset function. Built-in energy metering and password lock prevent misoperation. Standard 35mm DIN rail design fits consumer units, widely used for home, villa and small commercial circuit safety protection against unstable power supply.
Product Overview
This Over Voltage Protection Devices is a microcontroller-based single-phase AC protective device mounted on standard 35mm DIN rail. Equipped with a high-brightness tri-color digital screen, it simultaneously displays working voltage, current, active power and frequency. It integrates multiple protection functions: overvoltage protection, undervoltage protection, overcurrent protection and short-circuit protection. All protection thresholds, action time, power-on delay and recovery delay can be freely set through the built-in P-code menu. The auto-reset function will restore power automatically once the grid returns to the safe range. It also supports power statistics, correction calibration and password lock to avoid accidental parameter modification. It is an ideal safety component for distribution boxes in residential buildings, offices, shops and off-grid unstable power areas.
Key Features
✅ Tri-color multi-data display: Real-time display of Voltage, Current, Active Power & Frequency
✅ 4-in-1 protection: Overvoltage, Undervoltage, Overcurrent & Short Circuit protection
✅ Rich adjustable parameters: Power-on delay, recovery delay, protection action time, threshold hysteresis
✅ Auto reset function: Automatic power recovery after fault elimination
✅ Energy monitoring function: Built-in electric energy counter for power consumption reference
✅ Parameter calibration: Voltage & current correction function for high measuring accuracy (0.5 class)
✅ Password lock: Prevent unauthorized personnel from changing protection settings
✅ DIN rail installation: Standard 35mm rail mount, easy to install inside distribution cabinet
✅ Wide working voltage: AC 80~300V, rated 120V / 230V single phase
Technical Specifications
| Item | Specification |
|---|---|
| Model Name | LMGQ8-63T |
| Mounting | 35mm Standard DIN Rail |
| Rated Voltage | AC 120V / 230V |
| Operating Voltage Range | AC 80V ~ 300V |
| Measurement Accuracy | 0.5 class |
| Rated Insulation Voltage | 450V |
| Protection Functions | Overvoltage, Undervoltage, Overcurrent, Short Circuit |
| Power-on Delay | 1 ~ 999s adjustable |
| Recovery Delay | 1 ~ 999s adjustable |
| Storage Temperature | -10℃ ~ +55℃ |
| Operating Temperature | -20℃ ~ +60℃ |
| Protection Class | IP20 |
| Product Size | 853666mm |
Setup Menu Introduction
Users enter the P series menu to customize protection logic:
- P1: Power-on delay time
- P2: Recovery delay time
- P3 / P4: Timer ON / OFF setting
- P5: Overvoltage protection threshold
- P6: Overvoltage recovery value
- P7: Undervoltage protection threshold
- P8: Undervoltage recovery value
- P9: Voltage protection action time
- P10: Voltage correction
- P11: Overcurrent protection threshold
- P12: Current protection action time
- P13: Electric energy counter
- P14: Current correction
- P15: Auto-reset ON / OFF
- P16: Prepaid function
- P17: Short-circuit protection ON / OFF
- P18: Setting password lock
Application Scenarios
Household consumer units, villa power distribution, small shops, office circuits, solar auxiliary AC circuit protection, rural unstable grid load protection, rental house electrical safety control.
Installation & Warning
- This device must be installed by a qualified electrician.
- A circuit breaker should be installed at the front input side for pre-protection.
- Confirm wiring L / N IN and OUT correctly before power on.
- Do not install in environments with corrosive gas, direct strong sunlight and rain splash.
- The energy metering data is only for reference and cannot be used as legal billing standard.
Product Overview
This Over Voltage Protection Devices is a microcontroller-based single-phase AC protective device mounted on standard 35mm DIN rail. Equipped with a high-brightness tri-color digital screen, it simultaneously displays working voltage, current, active power and frequency. It integrates multiple protection functions: overvoltage protection, undervoltage protection, overcurrent protection and short-circuit protection. All protection thresholds, action time, power-on delay and recovery delay can be freely set through the built-in P-code menu. The auto-reset function will restore power automatically once the grid returns to the safe range. It also supports power statistics, correction calibration and password lock to avoid accidental parameter modification. It is an ideal safety component for distribution boxes in residential buildings, offices, shops and off-grid unstable power areas.
Key Features
✅ Tri-color multi-data display: Real-time display of Voltage, Current, Active Power & Frequency
✅ 4-in-1 protection: Overvoltage, Undervoltage, Overcurrent & Short Circuit protection
✅ Rich adjustable parameters: Power-on delay, recovery delay, protection action time, threshold hysteresis
✅ Auto reset function: Automatic power recovery after fault elimination
✅ Energy monitoring function: Built-in electric energy counter for power consumption reference
✅ Parameter calibration: Voltage & current correction function for high measuring accuracy (0.5 class)
✅ Password lock: Prevent unauthorized personnel from changing protection settings
✅ DIN rail installation: Standard 35mm rail mount, easy to install inside distribution cabinet
✅ Wide working voltage: AC 80~300V, rated 120V / 230V single phase
Technical Specifications
| Item | Specification |
|---|---|
| Model Name | LMGQ8-63T |
| Mounting | 35mm Standard DIN Rail |
| Rated Voltage | AC 120V / 230V |
| Operating Voltage Range | AC 80V ~ 300V |
| Measurement Accuracy | 0.5 class |
| Rated Insulation Voltage | 450V |
| Protection Functions | Overvoltage, Undervoltage, Overcurrent, Short Circuit |
| Power-on Delay | 1 ~ 999s adjustable |
| Recovery Delay | 1 ~ 999s adjustable |
| Storage Temperature | -10℃ ~ +55℃ |
| Operating Temperature | -20℃ ~ +60℃ |
| Protection Class | IP20 |
| Product Size | 853666mm |
Setup Menu Introduction
Users enter the P series menu to customize protection logic:
- P1: Power-on delay time
- P2: Recovery delay time
- P3 / P4: Timer ON / OFF setting
- P5: Overvoltage protection threshold
- P6: Overvoltage recovery value
- P7: Undervoltage protection threshold
- P8: Undervoltage recovery value
- P9: Voltage protection action time
- P10: Voltage correction
- P11: Overcurrent protection threshold
- P12: Current protection action time
- P13: Electric energy counter
- P14: Current correction
- P15: Auto-reset ON / OFF
- P16: Prepaid function
- P17: Short-circuit protection ON / OFF
- P18: Setting password lock
Application Scenarios
Household consumer units, villa power distribution, small shops, office circuits, solar auxiliary AC circuit protection, rural unstable grid load protection, rental house electrical safety control.
Installation & Warning
- This device must be installed by a qualified electrician.
- A circuit breaker should be installed at the front input side for pre-protection.
- Confirm wiring L / N IN and OUT correctly before power on.
- Do not install in environments with corrosive gas, direct strong sunlight and rain splash.
- The energy metering data is only for reference and cannot be used as legal billing standard.
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