Porduct Overview

EKU5-T2-40 AC Surge Protective Device is a Class II device designed to protect against transient overvoltage from fast switching operations or indirect lightning strikes. It can discharge induced voltage surges (8/20 μs) and is suitable for use as the second level of protection in supply distribution panels with Type 1 protectors, or as the first level of protection for applications not directly exposed to lightning strikes and without an external lightning protection system.

Technical parameters

Technical Data

Table 1

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(onlyTN-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

Table 2

Maximum continuous operating voltage (L-N)	Uc	150V	275V	320V	385V	440V
Maximum continuous operating voltage (N-PE)	Uc	255V
Norminal discharge current (8/20μs) (L-N)/(N-PE)	In	20kA
Maximum discharge current (8/20μs) (L-N)/(N-PE)	Imax	40kA
Voltage protection level (L-N)/(N-PE)	Up	0.8kV/1.5kV	1.3kV/1.5kV	1.5kV/1.5kV	1.8kV/1.5kV	2.0kV/1.5kV
Voltage protection level 5kA	Up	0.6kV	1.0kV	1.2kV	1.4kV	1.6kV
Response time (L-N)/(N-PE)	tA	≤25ns/≤100ns
Operating temperature range	Tu	-40℃ to +80℃
Max. Back-up fuse		125 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)

Dimensions

Basic circuit diagram

Installation Size

Product selection form

SPD Type Reference List
No. of Poles	Max. Continuous Operating AC Voltage
No. of Poles	150V	275V	320V	385V	440V
1P	EKU5-T2-40-1P150	EKU5-T2-40-1P275	EKU5-T2-40-1P320	EKU5-T2-40-1P385	EKU5-T2-40-1P440
2P	EKU5-T2-40-2P150	EKU5-T2-40-2P275	EKU5-T2-40-2P320	EKU5-T2-40-2P385	EKU5-T2-40-2P440
3P	EKU5-T2-40-3P150	EKU5-T2-40-3P275	EKU5-T2-40-3P320	EKU5-T2-40-3P385	EKU5-T2-40-3P440
4P	EKU5-T2-40-4P150	EKU5-T2-40-4P275	EKU5-T2-40-4P320	EKU5-T2-40-4P385	EKU5-T2-40-4P440
1P+NPE	EKU5-T2-40-1PN150	EKU5-T2-40-1PN275	EKU5-T2-40-1PN320	EKU5-T2-40-1PN385	EKU5-T2-40-1PN440
3P+NPE	EKU5-T2-40-3PN150	EKU5-T2-40-3PN275	EKU5-T2-40-3PN320	EKU5-T2-40-3PN385	EKU5-T2-40-3PN440
With Remote Signaling
1P	EKU5-T2-40-1P150S	EKU5-T2-40-1P275S	EKU5-T2-40-1P320S	EKU5-T2-40-1P385S	EKU5-T2-40-1P440S
2P	EKU5-T2-40-2P150S	EKU5-T2-40-2P275S	EKU5-T2-40-2P320S	EKU5-T2-40-2P385S	EKU5-T2-40-2P440S
3P	EKU5-T2-40-3P150S	EKU5-T2-40-3P275S	EKU5-T2-40-3P320S	EKU5-T2-40-3P385S	EKU5-T2-40-3P440S
4P	EKU5-T2-40-4P150S	EKU5-T2-40-4P275S	EKU5-T2-40-4P320S	EKU5-T2-40-4P385S	EKU5-T2-40-4P440S
1P+NPE	EKU5-T2-40-1PN150S	EKU5-T2-40-1PN275S	EKU5-T2-40-1PN320S	EKU5-T2-40-1PN385S	EKU5-T2-40-1PN440S
3P+NPE	EKU5-T2-40-3PN150S	EKU5-T2-40-3PN275S	EKU5-T2-40-3PN320S	EKU5-T2-40-3PN385S	EKU5-T2-40-3PN440S