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Low Residual Voltage Surge Protection Devic Three Phase 20KA 40KA 35mm Standard DIN Rail

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Shenzhen LLH Electrical Co., Ltd.

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Low Residual Voltage Surge Protection Devic Three Phase 20KA 40KA 35mm Standard DIN Rail

Model Number : LPM 80-385/3+NPE

Packaging Details : Box

Surge Capacity : In 20kA, Imax 40kA (8/20μs)

Housing Flame Grade : Mineral Nylon PA6 V0

Delivery Time : 7-15 days

SPD Class : Combined T2 + T3 Dual Stage

Supply Ability : 5000-10000 pieces/mouth

Mount Rail : 35mm Standard DIN Rail

Payment Terms : L/C,D/A,D/P,T/T,Western Union

Core Suppression Tech : Patented GMR Low Residual Technology

MOQ : 1 piece

Min L-N Voltage Protection Level : ≤1.0kV

Place of Origin : China

Brand Name : LLH

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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 variant achieves residual voltage as low as 1.0kV to mitigate calibration drift on PLCs, sensors and CNC controllers. Vibration-resistant pluggable modules integrate green/red visual status indicator and NC/NO dry remote contacts, compatible with 2.5~32mm² wide cables. Operating range -40℃ ~ +80℃ suits sealed high-temperature cabinets, fully compliant with GB/T 18802.11-2020 for fine terminal protection of automation, lab and medical equipment.

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.

● 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

Low Residual Voltage Surge Protection Devic Three Phase 20KA 40KA 35mm Standard DIN Rail

Based on criteria	GB/T 18802.11-2020
SPD type	T2,T3
SPD model	SLV 20-385/3+NPE	SLV 20-320/3+NPE
Electrical parameters
Nominal operating voltage Un	220Vac(50Hz)
Maximum continuous operating voltage Uc	385Vac(50Hz)	320Vac(50Hz)
Nominal discharge current (8/20μs)In	20kA	20kA
Maximum discharge current (8/20μs)Imax	40kA	40kA
Voltage protection level In@Up	L-N:≤1 .3kV N-E:≤1 .5kV	L-N:≤1 .0kV N-E:≤1 .5kV
L 123-N(3kA&6kV) Uoc	≤600V	≤800V
Response time tA	L-N:≤25ns N-E:≤100ns
Protected mode	L1,L2,L3-N,N-E
Mechanical parameters
Way to install	DIN 35mm guide rail
Screw torque	5 N*m
Strand length	12mm
Wiring cross-sectional area	2.5mm²-32mm²
Product size	90mmx72mmx68mm
Shell Material and Flame Retardant Rating	Mineral nylon PA6 ,V0
Warning system
Degradation indicator	Green window: OK; red window: Fail
Remote communication contact type	Normally closed , normally open switching contact
Remote communication contact switching capability	125Vac/1A,125Vdc/0 .2A
Work environment
Installation site	Indoor
Outer shell protection rating	IP20
Temperature range	-40℃…+80℃
Humidity range	Relative humidity ≤95% (max 40°C)

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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