NOV-40 self resetting overvoltage and undervoltage protector
Key attributes
| Brand | Switchgear parts |
| Model NO. | NOV-40 self resetting overvoltage and undervoltage protector |
| Rated voltage | AC220V |
| Rated normal current | 40A |
| Rated frequency | 50/60Hz |
| Series | NOV |
Product descriptions from the supplier
The NOV type self resetting overvoltage and undervoltage protector is an intelligent distribution protection device, with the core function of monitoring line voltage. When the voltage exceeds the safe range (undervoltage 140V-210V, overvoltage 230V-300V), the power can be automatically cut off within 0.5 seconds; After the voltage returns to normal, it will automatically reconnect after a preset delay (adjustable from 1-600 seconds) without the need for manual intervention throughout the process. Its IP20 protection level meets the installation requirements of conventional distribution boxes.
Advantages of NOV type self resetting overvoltage and undervoltage protector:
1. Accurate protection: With an error range of ± 2%, the protection action is precise and reliable.
2. Quick response: The delay of overvoltage and undervoltage action is only 0.5 seconds, quickly cutting off the dangerous power supply.
3. Flexible self recovery: Adjustable reset time of 1-600 seconds, suitable for different device restart needs.
4. Durable and long-lasting: up to 100000 electrical cycles and 1 million mechanical cycles, with stability.
5. Wide compatibility: Suitable for AC 220V/50-60Hz power grid, with strong applicability.
Product features of NOV type self resetting overvoltage and undervoltage protector:
1. Wide threshold protection:
Undervoltage protection covers 140V to 210V, while overvoltage protection covers 230V to 300V, effectively responding to various voltage abnormal scenarios.
2. High precision monitoring:
± 2% error control, accurate voltage judgment, avoiding misoperation or leakage protection.
3. Quick response mechanism:
After detecting abnormal voltage, it only takes 0.5 seconds to complete the power-off action, reducing the risk of equipment damage.
4. Intelligent reset:
Provide flexible reset delay settings ranging from 1 second to 600 seconds to meet the safe restart interval requirements of various electrical appliances such as air conditioners and refrigerator compressors.
5. Double long-life design:
The electrical components have a breaking life of 100000 times, and the mechanical structure supports up to 1 million operations, ensuring long-term stable operation.
6. Standard protection:
IP20 shell protection effectively prevents large solid foreign objects from entering, suitable for installation in standard distribution box environments.
·Accurate and fast protection, no dead angle for voltage fluctuations: The overvoltage and undervoltage thresholds can be accurately adjusted within the range of 230-300V/140-210V, and the trip response time is only 0.5 seconds, which can instantly cut off the abnormal voltage circuit to avoid equipment insulation breakdown and component burnout.
·Automatic reset and maintenance-free, reducing labor costs: It automatically recloses after the voltage returns to normal, no manual closing or replacement of accessories is required. Especially suitable for unattended scenarios (such as PV power stations, remote control equipment), the operation and maintenance cost is reduced by 80%.
·High-durability design for more reliable stable operation: Adopting a flame-retardant ABS shell with an IP20 protection level, it is dustproof and shockproof; the electrical life is ≥10⁵ times and the mechanical life is ≥10⁶ times, supporting long-term and high-frequency voltage fluctuation protection with a service life of more than 8 years.
·Wide scenario adaptation, flexible and efficient installation: Compatible with AC 80V-400V wide voltage input, suitable for 220V residential power distribution and 380V industrial control scenarios; adopting 35mm standard DIN rail installation, it is compact in size and can be densely arranged with circuit breakers and relays, reducing installation time by 50%.
he NOV-40 Self-Resetting Overvoltage and Undervoltage Protector is an intelligent electrical device specially designed for voltage protection of single-phase/three-phase power distribution systems. With a rated current of 40A, it is compatible with AC 220V/380V voltage scenarios, featuring dual protection of overvoltage and undervoltage as well as automatic reset function. When the grid voltage exceeds the set threshold (overvoltage ≥230-300V/undervoltage ≤140-210V), the device trips quickly within 0.5 seconds to cut off the circuit; after the voltage returns to normal, it can automatically reclose within 1-600 seconds without manual operation. Widely used in residential power distribution, commercial buildings, industrial control, PV power distribution and other scenarios, it protects household appliances and precision equipment from damage caused by voltage fluctuations.
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