GRV8-1UVR Single Phase Undervoltage Relay
Key attributes
| Brand | Switchgear parts |
| Model NO. | GRV8-1UVR Single Phase Undervoltage Relay |
| Rated frequency | 45Hz-65Hz |
| Series | GRV8 |
Product descriptions from the supplier
Product Highlight：
Reliable Protection: Shields motors, air conditioning systems, and other inductive loads from harmful under voltage conditions.
True RMS Measurement: Delivers precise voltage monitoring, even in environments with harmonics or distorted waveforms.
Wide Compatibility: Functions across a 45Hz to 65Hz frequency range, adaptable to diverse power systems.
High Precision: Offers voltage measurement accuracy of less than 1% for consistent performance.
User-Friendly Design: Features an LED status indicator and a compact 1-MODULE format for easy DIN rail mounting.
The GEYA GRV8-1UVR is a single-phase undervoltage relay specifically designed for industrial and commercial applications. It is intended to protect inductive loads, such as air conditioning systems and motors, from damage caused by sudden low voltage fluctuations. Utilizing advanced True RMS measurement technology, this device continuously monitors the supply voltage in real time and promptly disconnects the load when the voltage falls below a preset threshold, effectively preventing equipment damage and production interruptions.
Function： Under voltage
Rated supply voltage(Un)：220V/230V/240V
Rated supply frequency：45Hz-65Hz
Under voltage threshold：Fixed 75% of Un
Applications：
Product is used for highly fluctuating inductive load such as Air.
Conditioning system inIndustrial and commercial establishments.
lt protects the system equipment and load from sudden under voltage fuctuations.
| Item | GRV8-1UVR Single Phase Undervoltage Relay |
| Function | Under voltage |
| Monitoring terminials | L-N |
| Supply terminals | L-N |
| Rated supply voltage(Un) | 220V/230V/240V |
| Rated supply frequency | 45Hz-65Hz |
| Under voltage threshold | R:fixed 75% of Un |
| Trip delay time(Tu) | 0.1s |
| Hysteresis | 5V |
| Measurement error | ≤1% |
| Power on delay time(Td) | Adjustable: 5min-15min |
| Recovery delay time(Tr) | Adjustable: 5min-15min |
| Konb setting accuracy | 10% of scale value |
| Supply indication | green LED |
| Output indication | red LED |
| Output | 1×SPDT |
| Current rating | 10A/AC1 |
| Switching voltage | 250VAC/24VDC |
| Mechanical life | 1*107 |
| Electrical life(AC1) | 1*105 |
| Operating temperature | -20℃ to +55℃（-4℉ to 131℉） |
| Storage temperature | -35℃ to +75℃（-22℉ to 158℉） |
| Mounting/DIN rail | Din rail EN/IEC 60715 |
| Protection degree | IP40 for front panel/IP20 terminals |
| Operating position | any |
| Overvoltage category | III |
| Pollution degree | 2 |
| Max.Cable size(mm²） | solid wire max.1×2.5or 2×1.5/with sleeve max.1×2.5(AWG 12) |
| Tightening torque | 0.8Nm |
| Dimensions | 90×18×64mm |
| Weight | 63g,65g |
| Standards | EN 60255-1,IEC60947-5-1 |
Online store
On-time delivery rate
Response time
100.0%
≤4h
Company overview
Workplace: 1000m²
Total staff:
Highest Annual Export(usD): 300000000
Services
Business Type: Sales
Main Categories: Low Voltage Electrical Apparatus/Instrument meters/Production equipment/Electrical fittings/Equipment Parts
Whole life care manager
Whole-life care management services for equipment procurement, use, maintenance, and after-sales, ensuring safe operation of electrical equipment, continuous control, and worry-free electricity consumption.
The equipment supplier has passed platform qualification certification and technical evaluation,
ensuring compliance, professionalism, and reliability from the source.
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