Whole House Surge Suppression 220V 10kA 25kA Low Residual Voltage Protection Device
Product Summary
SLV-10S/SLV-20S is a compact ultra-low residual voltage surge protector designed for single-phase power supply systems, ideal for fine lightning protection in LPZ 1-2 and subsequent lightning protection zones. As a series-installed fine arrester at the front end of equipment, it integrates full-mode ...
Product Custom Attributes
Whole House Surge Suppression 220V
,DIN Rail Mount SPD
,Low Residual Voltage Surge Protector
Basic Properties
Trading Properties
Product Description
SLV-10S/SLV-20S is a compact ultra-low residual voltage surge protector designed for single-phase power supply systems, ideal for fine lightning protection in LPZ 1-2 and subsequent lightning protection zones.
As a series-installed fine arrester at the front end of equipment, it integrates full-mode protection to shield against surges in line-neutral, line-earth, and neutral-earth paths.
With nominal discharge current of 10kA (SLV-10S) and 20kA (SLV-20S), this SPD efficiently diverts transient overvoltages caused by lightning or power grid fluctuations.
The "no leakage current, no afterflow" design ensures energy efficiency and operational safety, while the ultra-low residual voltage minimizes impact on sensitive devices.
| Product features |
● Full mode protection |
● Large flow capacity and super low residual pressure |
● No leakage current, no afterflow |
● Suitable for installation in LPZ 1-2 and subsequent lightning protection zones, used for single-phase power supply systems, and a fine lightning arrester installed in series at the front level of the equipment. |
Product usage and maintenance instructions
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Operation & Maintenance
| Installation Notes
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Product Specification
| Standards | IEC 61643.11 | |
| SPD type | T2,T3 | |
| Models | SLV-10S | SLV-20S |
| Nominal operating voltage Un | 220Vac(50Hz) | |
| Maximum continuous operating voltage Uc | 320Vac(50Hz) | |
| Nominal discharge current (8/20μs)In | 10kA | 20kA |
| Maximum discharge current (8/20μs) Imax | 25kA | 40kA |
| Voltage protection level In@Up | ≤0.8kV | ≤1.0kV |
| L-N,L-E,N-E(3kA&6kV) Uoc | ≤650V | |
| Response time tA | ≤25ns | |
| Load current IR | 15A (Load greater than 15A can be connected in parallel, and the residual voltage remains unchanged) | |
| Failure mode | open circuit | |
| Deterioration indication | LED green: OK; LED red: Fail | |
| Protection Circuit | L-N,L-E,N-E | |
Mechanical parameters
| Installation method | DIN Rail 35mm |
| Screw torque | 3N*m |
| Strip length | 10mm |
| Wiring cross-sectional area | 2.5mm²-10mm² |
| Product size | 97mmx69mmx55mm |
| Shell material and surface technology | Shell material and surface technology |
| Installation position | Indoor |
| Degrees of protection provided by enclosure | IP20 |
| Temperature range | -40℃…+80℃ |
| Humidity range | Relative humidity ≤ 95% (max 40 ℃) |
Notices
● Confirm that the system voltage matches 220Vac(50Hz) before installation.
● Use wiring with cross-sectional area 2.5mm²-10mm² and fasten screws to 3N·m torque.
● Grounding wire length should be less than 0.5 meters to optimize protection effect.
● Replace the SPD immediately if the LED indicator turns red (failure status).
● Do not exceed the maximum load current (20A) to avoid overheating.
● This product is for indoor use only; avoid exposure to moisture or direct sunlight.
FAQ
Q1: What is the load current capacity of SLV 10K-320?
A1: It supports a maximum load current of 20A, suitable for most household and small commercial equipment.
Q2: How to confirm if the product is working normally?
A2: Check the LED indicator—green indicates normal operation, red indicates failure and requires replacement.
Q3: Can it be used in regions with frequent lightning strikes?
A3: Yes, with maximum discharge current of 20kA, it effectively handles lightning-induced surges when paired with proper grounding.
Q4: Is professional installation required?
A4: It is recommended to be installed by qualified electricians to ensure correct wiring, grounding, and compliance with electrical codes.
Q5: What is the service life of this SPD?
A5: Under normal operating conditions, the service life is 5-8 years. It is recommended to inspect annually and replace if necessary.
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