Bộ bảo vệ điện áp quá & thấp EXUR7N/EXUR7
Watch Voltage AND Current — Trip, Display and Reclose Automatically
The EXUR7N and EXUR7 are intelligent over/under voltage protectors for single-phase AC circuits, mounted on a 35mm DIN rail in a standard 2P modular body. They continuously monitor both voltage and current, disconnect the load when overvoltage, undervoltage or overcurrent faults occur, and automatically reclose after the line recovers — protecting refrigerators, air conditioners and electronics from unstable grid supply.
Mô hình
EXUR7N / EXUR7 Series — Over & Under Voltage ProtectorEXUR7N-63□ / EXUR7-63□ (40A / 63A / 80A current options)
AC220V / AC110V · 35mm DIN rail · auto reclose · 19-parameter setup
Chi tiết sản phẩm
- Single-phase 2P protector on a 35mm DIN rail with real-time voltage and current display.
- Overvoltage, undervoltage and overcurrent protection with independent, adjustable thresholds.
- Automatic reclose after recovery delay; transient-overvoltage immunity against false trips.
- 40A/63A/80A ratings; AC220V supply (AC110V variant available); 19-parameter menu with setup lock.
Thông tin sản phẩm
EXUR7N Overvoltage and Undervoltage Protector
General
EXUR7N Series Intelligent Over/Under Voltage Protector is a DIN-rail mounted intelligent protection device that integrates real-time dual parameter monitoring of voltage and current, multiple protection logic, and automatic fault self-resetting. Featuring a standard 2-pole (2P) modular design, it can be directly mounted on a 35mm DIN rail and is suitable for terminal protection in single-phase AC distribution systems, providing reliable, precise, and intelligent electrical safety protection for connected loads.
Operating Condition
- Ambient temperature: -25°C~+50°C
- Relative humidity: <50% at 40°C ( without condensation)
- Altitude: ≤2000m
- Environmental conditions: no harmful gases and vapors, no conductive or explosive dust, no severe mechanical vibration.
Tính Năng
Voltage and current display relay used in administrative, industrial and residential buildings and has the function of protecting single-phase lines:
- Working under voltmeter mode;
- Undervoltage protection;
- Overvoltage protection;
- Overcurrent proteciton.
Dữ liệu kỹ thuật
| Supply terminals | N,L |
| Rated supply voltage | AC 220V;DC 80-300V |
| Rated frequency | 40/50/60/70Hz |
| >U setting range | AC130-300V;DC130-300V |
| <U setting range | AC80-210V;DC80-210V |
| Voltage hysteresis | 5V |
| Overvoltage trip delay | 0.5s |
| Voltage accuracy | <1% |
| Max.operating phase voltage | 350V |
| Max.operating current | 40A/63A |
| Độ cao | <2000m |
| Ambient temperature | -25℃~+50℃ |
| Permissable relative humidity | <50%at 40℃(without condensation) |
| Storage temperature | -25℃~+55℃ |
| Kích thước | 85*36*66mm |
| No. | Option | max | min | Default | Step | Unit | Mô tả |
| P1 | Power-on delay | 999 | 1 | 5 | 1/10 | S | Close overvoltage if greater than 300 |
| P2 | Recovery delay | 999 | 1 | 30 | 1/10 | S | Skip this setting when overvoltage is tuned off |
| P3 | Overvoltage | 300 | 130 | 270 | 1/10 | V | Close undervoltage if below 80 |
| P4 | Overvoltage recovery value | 295 | 125 | 265 | 1/10 | V | Skip this setting when undervoltage is tuned off |
| P5 | Undervoltage | 210 | 80 | 170 | 1/10 | V | Long press setting is not recommended |
| P6 | Undervoltage recovery value | 215 | 85 | 175 | 1/10 | V | Close overcurrent if greater than 63.0 |
| P7 | Overvoltage action delay | 10.0 | 0.1 | 0.5 | 0.1/1.0 | S | 0:Turn off counting |
| P8 | Voltage correction | +10% | -10% | 0 | 0.5% | V | Long press setting is not recommended |
| P9 | Overcurrent | 63.0 | 1.0 | 63.0 | 0.1/1.0 | A | Modifying this value will affect the accuracy of the timer |
| P10 | Overflow as delay | 10.0 | 0.1 | 1.0 | 0.1/1.0 | S | 1:Standards |
| P11 | Continuous overcurrent counting | 20 | 0 | 0 | 1 | Times | 2:Manual switch |
| P12 | Current correction | +10% | -10% | 0 | 0.5% | A | 3:Automatic switch |
| P13 | Frequency correction | +2.5% | -2.5% | 0 | 0.1% | Hz | on:Self-recovery |
| P14 | Rapid power failure protection | hơn là | off | hơn là | MS | off:Manual recovery | |
| P15 | Display mode | 3 | 1 | 1 | 1 | on:Protector working properly | |
| P16 | Automatic reset | hơn là | off | hơn là | off:knife mode | ||
| P17 | Action/knife mode | hơn là | off | hơn là | on:Open | ||
| P18 | Energy saving mode | hơn là | off | off | off:Close | ||
| P19 | Setup lock password | 999 | 000 | 112 | 1/10 | When this value is not 112,you can onlyview the parameter and cannot set it |
- In caseofover-voltagefault, under-valtagefault orover-current tault insingleghaseline, the product canpower line over a time delay after voltageor current of the lineis recovered to normal condition.
- In case of transient over voltageinline, the product canprotect the equipmant from false aperation.
- In case that theline subjects to unstable Voltage connectionand other fault, the product willdisconnec theline.
- When fault vollage of thelinereaches thepeak, the product it self will not bedamaged.
Wiring Diagram / Dimensional Drawing
Front-face Panel
Setup Menu
EXUR7 Overvoltage and Undervoltage Protector
General
EXUR7 Series Intelligent Over/Under Voltage Protector is a DIN-rail mounted intelligent protection device that integrates real-time dual parameter monitoring of voltage and current, multiple protection logic, and automatic fault self-resetting. Featuring a standard 2-pole (2P) modular design, it can be directly mounted on a 35mm DIN rail and is suitable for terminal protection in single-phase AC distribution systems, providing reliable, precise, and intelligent electrical safety protection for connected loads.
Operating Condition
- Ambient temperature: -25°C~+50°C
- Relative humidity: <50% at 40°C ( without condensation.
- Altitude: ≤2000m
- Environmental conditions: no harmful gases and vapors, no conductive or explosive dust, no severe mechanical vibration
Tính Năng
Voltage and current display relay used in administrative, industrial and residential buildings and has the function of protecting single-phase lines:
- Working under voltmeter mode;
- Undervoltage protection;
- Overvoltage protection;
- Overcurrent proteciton.
Dữ liệu kỹ thuật
| Supply terminals | N,L |
| Rated supply voltage | AC 220V;DC 80-300V |
| Rated frequency | 40/50/60/70Hz |
| >U setting range | AC130-300V;DC130-300V |
| <U setting range | AC80-210V;DC80-210V |
| Voltage hysteresis | 5V |
| Overvoltage trip delay | 0.5s |
| Voltage accuracy | <1% |
| Max.operating phase voltage | 350V |
| Max.operating current | 40A/63A |
| Độ cao | <2000m |
| Ambient temperature | -25℃~+50℃ |
| Permissable relative humidity | <50%at 40℃(without condensation) |
| Storage temperature | -25℃~+55℃ |
| Kích thước | 85*36*66mm |
| No. | Option | max | min | Default | Step | Unit | Mô tả |
| P1 | Power-on delay | 999 | 1 | 5 | 1/10 | S | Close overvoltage if greater than 300 |
| P2 | Recovery delay | 999 | 1 | 30 | 1/10 | S | Skip this setting when overvoltage is tuned off |
| P3 | Overvoltage | 300 | 130 | 270 | 1/10 | V | Close undervoltage if below 80 |
| P4 | Overvoltage recovery value | 295 | 125 | 265 | 1/10 | V | Skip this setting when undervoltage is tuned off |
| P5 | Undervoltage | 210 | 80 | 170 | 1/10 | V | Long press setting is not recommended |
| P6 | Undervoltage recovery value | 215 | 85 | 175 | 1/10 | V | Close overcurrent if greater than 63.0 |
| P7 | Overvoltage action delay | 10.0 | 0.1 | 0.5 | 0.1/1.0 | S | 0:Turn off counting |
| P8 | Voltage correction | +10% | -10% | 0 | 0.5% | V | Long press setting is not recommended |
| P9 | Overcurrent | 63.0 | 1.0 | 63.0 | 0.1/1.0 | A | Modifying this value will affect the accuracy of the timer |
| P10 | Overflow as delay | 10.0 | 0.1 | 1.0 | 0.1/1.0 | S | 1:Standards |
| P11 | Continuous overcurrent counting | 20 | 0 | 0 | 1 | Times | 2:Manual switch |
| P12 | Current correction | +10% | -10% | 0 | 0.5% | A | 3:Automatic switch |
| P13 | Frequency correction | +2.5% | -2.5% | 0 | 0.1% | Hz | on:Self-recovery |
| P14 | Rapid power failure protection | hơn là | off | hơn là | MS | off:Manual recovery | |
| P15 | Display mode | 3 | 1 | 1 | 1 | on:Protector working properly | |
| P16 | Automatic reset | hơn là | off | hơn là | off:knife mode | ||
| P17 | Action/knife mode | hơn là | off | hơn là | on:Open | ||
| P18 | Energy saving mode | hơn là | off | off | off:Close | ||
| P19 | Setup lock password | 999 | 000 | 112 | 1/10 | When this value is not 112,you can onlyview the parameter and cannot set it |
- In caseofover-voltagefault, under-valtagefault orover-current tault insingleghaseline, the product canpower line over a time delay after voltageor current of the lineis recovered to normal condition.
- In case of transient over voltageinline, the product canprotect the equipmant from false aperation.
- In case that theline subjects to unstable Voltage connectionand other fault, the product willdisconnec theline.
- When fault vollage of thelinereaches thepeak, the product it self will not bedamaged.
Wiring Diagram / Dimensional Drawing
Front-face Panel
Setup Menu
Cách Chúng Tôi Hỗ Trợ Doanh Nghiệp Của Bạn
OEM / ODM
Custom faceplates, market-specific factory defaults and packaging on the standard DIN rail platform.
Custom faceplates · Factory defaults · Calibration data
Bán buôn
Factory-direct pricing for distributors in high-voltage-fluctuation markets where appliance protection is a fast-growing category.
Giá nhà máy · MOQ linh hoạt · Vận chuyển toàn cầu
Hỗ trợ nhà phân phối
Market-setup guides, threshold tables and priority production for channel partners in residential electrical retail.
Setup guides · Threshold tables · Priority lead times
Ready to Stock the EXUR7N / EXUR7 Series?
OEM/ODM, wholesale pricing and distributor support — one enquiry gets you a factory-direct quotation for over/under voltage protectors in 40A, 63A and 80A ratings, pre-set to your market’s voltage window.
Câu hỏi thường gặp
What is an over/under voltage protector and why install one?
An over/under voltage protector disconnects a load when the line voltage leaves a safe window — for example above 270V or below 170V on a 220V line — and reconnects it after the supply recovers. It protects compressors, refrigerators, air conditioners and electronics from brown-outs, neutral drift and grid surges. The EXUR7N/EXUR7 also monitors current, adding overcurrent protection for the circuit.
What is the difference between EXUR7N and EXUR7?
Functionally they are identical — the same dual voltage/current monitoring, the same protection logics and the same 19-parameter setup. EXUR7N and EXUR7 are two model-name families within the same platform, offered so different distribution channels and markets can carry separate part numbers. Order either; specify the current rating (40/63/80A) and supply voltage.
Does the protector reset automatically after a fault?
Yes, if auto-reclose is enabled. After an overvoltage, undervoltage or overcurrent trip, the protector waits for the configured recovery delay (default 30 tenths of a second units in the P2 parameter) and reconnects automatically once conditions are normal. Set the menu to manual recovery where an attended reset is required by local rules.
Where should it be installed — before or after the main breaker?
The protector protects a branch or the whole single-phase load, so it is installed downstream of the main overcurrent device, on the DIN rail of the distribution board, upstream of the socket circuits or appliances it guards. Its own terminals are rated for the model’s current (40/63/80A); the upstream breaker provides short-circuit backup.
Can it be used on a 110V supply?
Yes — the EXUR7N/EXUR7 platform includes an AC110V supply variant in addition to the standard AC220V version, with the same over/under voltage and overcurrent functions scaled to the 110V window. Confirm the supply variant when ordering.
