Low Voltage Surge Protection Device Spd DIN Rail Mount Surge Suppression Device 220V 10kA 25kA
Product Summary
SLV-10S/SLV-20S is a compact ultra-low residual voltage surge protection device 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 ...
Product Custom Attributes
220V Low Voltage Surge Protection Device
,25kA Surge Protection Device Spd
,DIN Rail Mount Surge Suppression Device
Basic Properties
Trading Properties
Product Description
SLV-10S/SLV-20S is a compact ultra-low residual voltage surge protection device 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.
Equipped with LED status indication (green: normal; red: failed) and open-circuit failure mode, it provides clear operational status and safe fault handling. The compact size (97mmx69mmx55mm) and 35mm DIN Rail mounting make it suitable for space-constrained environments. It supports parallel connection for loads exceeding 15A without changing residual voltage, making it versatile for homes, offices, and light industrial equipment protection.
| Applications |
| ● Single-phase power systems in residential buildings, offices, and small commercial spaces |
| ● Front-end protection for household appliances, office equipment, and sensitive electronics |
| ● Light industrial single-phase equipment and control systems |
| ● Indoor power supply lines in apartments, shops, and small workshops |
| ● Auxiliary equipment protection in communication rooms and data centers |
Product features
| 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
1.For loads exceeding 15A, parallel installation of multiple SPDs is allowed to maintain protection performance.
2.Use wiring with cross-sectional area 2.5mm²-10mm² and tighten screws to 3N·m torque.
3.Ensure reliable grounding with ground resistance ≤4Ω to guarantee surge diversion efficiency.
4.Replace the SPD immediately if the LED indicator turns red (failure status) or after severe surge impact.
5.Do not disassemble the product; improper operation may damage internal components.
6.Avoid using in environments beyond the specified temperature and humidity range.
FAQ
Q1: Can SLV-10S/SLV-20S be used for air conditioners or refrigerators?
A1: Yes, it is suitable for protecting household appliances with rated current ≤15A; for larger loads, parallel installation is recommended.
Q2: What is the difference between SLV-10S and SLV-20S?
A2: The core difference is discharge current: SLV-10S has In=10kA/Imax=25kA, while SLV-20S has In=20kA/Imax=40kA. Other parameters and design are consistent.
Q3: Does the product support hot-swapping?
A3: No, hot-swapping is not supported. Please disconnect the power supply before replacing the SPD.
Q4: What is the failure mode of this SPD?
A4: It adopts open-circuit failure mode, which automatically disconnects from the circuit when faulty to avoid short circuits or other hazards.
Q5: Can it be installed outdoors?
A5: No, it is designed for indoor use only. For outdoor applications, choose products with IP67 protection level.
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