Low Residual Voltage Surge Protection Devic Three Phase 20KA 40KA 35mm Standard DIN Rail
Product Summary
This 3+NPE three-phase surge arrester is designed for LPZ1-LPZ2 terminal lightning zones with patented GMR ultra-low residual voltage technology to clamp switching and lightning transients quickly. Full L1/L2/L3-N plus independent N-E discharge circuits deliver ≤25ns L-N response time, the 320Vac ...
Product Custom Attributes
Low Residual Voltage SPD DIN Rail
,Three Phase Surge Protection Device 20KA
,T2 SPD 35mm Standard DIN Rail
Basic Properties
Trading Properties
Product Description
| Product features |
| ● Proprietary GMR technology for ultra-low residual clamping voltage. |
| ● Complete 3+NPE multi-mode phase and earth surge paths. |
| ● Combined T2+T3 staged overvoltage limitation. |
| ● Tool-free single module plug-and-play replacement. |
| ● Stable performance across -40℃ to +80℃ ambient range. |
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● Suitable for installation in LPZ 1 -2 and subsequent lightning protection zones , it is used as a fine lightning arrester for three-phase power supply systems . |
Specification
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Based on criteria |
GB/T 18802.11-2020 |
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SPD type |
T2,T3 |
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SPD model |
SLV 20-385/3+NPE |
SLV 20-320/3+NPE |
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Electrical parameters |
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Nominal operating voltage Un |
220Vac(50Hz) |
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Maximum continuous operating voltage Uc |
385Vac(50Hz) |
320Vac(50Hz) |
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Nominal discharge current (8/20μs)In |
20kA |
20kA |
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Maximum discharge current (8/20μs)Imax |
40kA |
40kA |
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Voltage protection level In@Up |
L-N:≤1 .3kV N-E:≤1 .5kV |
L-N:≤1 .0kV N-E:≤1 .5kV |
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L 123-N(3kA&6kV) Uoc |
≤600V |
≤800V |
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Response time tA |
L-N:≤25ns N-E:≤100ns |
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Protected mode |
L1,L2,L3-N,N-E |
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Mechanical parameters |
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Way to install |
DIN 35mm guide rail |
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Screw torque |
5 N*m |
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Strand length |
12mm |
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Wiring cross-sectional area |
2.5mm²-32mm² |
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Product size |
90mmx72mmx68mm |
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Shell Material and Flame Retardant Rating |
Mineral nylon PA6 ,V0 |
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Warning system |
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Degradation indicator |
Green window: OK; red window: Fail |
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Remote communication contact type |
Normally closed , normally open switching contact |
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Remote communication contact switching capability |
125Vac/1A,125Vdc/0 .2A |
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Work environment |
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Installation site |
Indoor |
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Outer shell protection rating |
IP20 |
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Temperature range |
-40℃…+80℃ |
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Humidity range |
Relative humidity ≤95% (max 40°C) |
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FAQ
Q1: What advantages does low residual voltage bring vs standard SPDs?
A: Ordinary Type 2 SPDs usually deliver residual voltage above 1.3kV; our 320Vac variant reaches ≤1.0kV to minimize transient impact on sensitive measuring hardware.
Q2: Does GMR technology require special wiring layout?
A: Standard 3+NPE three-phase five-wire connection works without custom modifications.
Q3: Why is N-E response slower than L-N channel?
A: Datasheet lists N-E response ≤100ns due to neutral-earth loop impedance characteristics, without compromising overall equipment protection.
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