N8UE2-40 Type 2 AC Surge Protection Device

Description

The N8UE2-40 is a high-performance Type 2 surge protection device built to protect electrical systems and sensitive equipment from transient overvoltages caused by switching events and indirect lightning strikes. With a robust maximum discharge current of 40kA (8/20μs) and a nominal discharge current of 20kA, it delivers powerful suppression while maintaining a low voltage protection level of 1.5kV and an ultra-fast response time ≤25ns. Available in 1P–4P configurations, it mounts easily on a standard 35mm DIN rail and supports backup fuses up to 125A. The flame-retardant UL 94 V-0 housing and wide terminal compatibility (1.5–35mm² cables) ensure secure and versatile installation. Engineered for extreme conditions, it operates reliably from –40℃ to +85℃ and at altitudes up to 5000m. IP20 rated for indoor use.

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Technical Data

Item	Parameter
Operating Temperature Range	-40 ℃~85 ℃
Permissible Operating Humidity	5 %~95 %
Atmospheric pressure and altitude	-500 m ~ +5000 m
Model NO.	N8UE2-40
SPD Type	Type 2
Protection Mode	L1/2/3/N-PE
Maximum Continuous Operating Voltage (AC)Uc	275 V
Frequency	50/60 Hz
Nominal Discharge Current In (8/20 μs)	20 kA
Maximum Discharge Current Imax (8/20 μs)	40 kA
Voltage Protection Level Up	1.5 kV
Back-Up Fuse (max)	125 A gL/gG
Response Time tA	≤ 25 ns
Terminal Screw Torque	MC cable: 1.5 mm²~25 mm² SC cable: 1.5 mm²~35 mm²
Degree of Protection	IP 20
Dimensions	1P:82±1mm×18±1mm×66±1mm (L×W×H) 2P:82±1mm×36±1mm×66±1mm (L×W×H) 3P:82±1mm×54±1mm×66±1mm (L×W×H) 4P:82±1mm×72±1mm×66±1mm (L×W×H)
Mounting	35 mm guide rail
Housing material	UL 94 V-0