EKU5-T1+T2-7 Combined Class I+II Surge Protector with 7kA Impulse Discharge Current

Standard: IEC/EN 61643-11

Surge Rating: Iimp=7kA (10/350 µs), In=25kA (8/20 µs)

IEC/EN Category: Class I+II / Type 1+2

Max. continuous operating voltage: 150, 275, 320, 385, 440V

Housing: Pluggable Design

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Product Introduction

EKU5-T1+T2-7 is a premium surge protective device (SPD) designed to provide comprehensive protection against both direct and indirect lightning strikes. This versatile Type 1+2 combined protector complies with IEC/EN61643-11 standards, making it suitable for installation at the main distribution board to protect sensitive electrical equipment in commercial, industrial, and residential applications.

Applications:

• Industrial power distribution systems

• Commercial building electrical networks

• Telecom infrastructure protection

• Renewable energy installations

Certified for TN-S, TN-C, and TT network systems, this SPD offers voltage protection levels from 1.0kV to 2.0kV depending on configuration. The compact design allows easy integration into existing electrical panels.

Product Parameters

No.of poles	1P	2P	3P	4P	1P+NPE	3P+NPE
Network systems	TN-S, TN-C, TT(only L-N)	TN-S	TN-C	TN-S	TT, TN-S
Mode of protection	L-PE, N-PE(only TN-S), L-PEN, L-N	L-PE, N-PE	L-PEN	L-PE, N-PE	L-N, N-PE
Protective elements	High Energy MOV				High Energy MOV and GDT

Maximum continuous operating voltage (L-N)	Uc	150V	275V	320V	385V	440V
Maximum continuous operating voltage (N-PE)	Uc	255V
Impulse discharge current (10/350μs)	Iimp	7kA
Norminal discharge current (8/20μs)	In	25kA
Maximum discharge current (8/20μs)	Imax	50kA
Voltage protection level (L-N)/(N-PE)	Up	1.2kV/1.5kV	1.4kV/1.5kV	1.6kV/1.5kV	1.8kV/1.5kV	2.0kV/1.5kV
Voltage protection level 5kA	Up	1.0kV	1.2kV	1.4kV	1.5kV	1.6kV
Response time (L-N)/(N-PE)	tA	≤25ns/≤100ns
Operating temperature range	Tu	-40℃ to +80℃
Max. Back-up fuse		160 A gL/gG
Operating state/fault indication		Green/Red(L-N),Yellow(N-PE)
Cross-section area (Min.)/(Max.)		4mm²/35mm²
Mounting		35 mm DIN Rail, EN 60715
Enclosure material		Thermal Plastic UL94-V0
Degree of protection		IP20 (built-in)