Page 68 - Surge-Protection-E_0.pdf

Surge Arresters – Type 2

DEHNguard 5 kA (NL)
• High reliability due to "Thermo Dynamic Control" monitoring
system
• Easy installation and retrofitting thanks to narrow design
(width of 18 / 36 mm)
• Application-optimised discharge capacity of
5 kA (In) / 15 kA (Imax) (8/20 µs) per pole
• Energy coordination with other arresters of the Red/Line family
• Operating state / fault indication by green / red indicator flag
in the inspection window
• Vibration and shock-tested according to EN 60068-2

For protecting low voltage consumer installations against surges. For installation
in conformity with the lightning protection zone concept at the boundaries from
0B – 1 and higher.

DG TT 2P 5 275 (NL): Compact surge arrester for single-phase TT and TN systems (1+1 configuration)
DG TT 5 275 (NL): Compact surge arrester for TT and TN-S systems (3+1 configuration)

The compact surge arresters of the DEHNguard TT 5 275 series comple- Dynamic Control“ monitoring device which meets the high safety stand-
ment the proven DEHNguard M family for applications with reduced tech- ards for surge arresters.
nical parameters. The dual Thermo Dynamic Control monitoring device was not only devel-
DEHNguard TT ... 5 275 arresters take up little space and are therefore oped on the basis of applicable national and international product stand-
ideally suited for retrofitting in existing installations and applications with ards, but also reflects decades of experience in the world market of surge
restricted space. Consequently, the devices can be used to protect individ- protective devices and considers many practical applications where ar-
ual parts of installations (e.g. lighting systems or pumps). In case of mul- resters might be damaged.
ti-phase application, e.g. in TT systems (3+1), the arresters only require The standard mechanical operating state / fault indication reliably indi-
two modules. Since the devices can be used up to 63 A without an addi- cates the status of the surge protective device.
tional backup fuse, easy and cost-optimised installation of surge protec-
tive devices is ensured. Consequently, the devices of the DEHNguard TT 5 275 series are ideally
suited for retrofitting, applications with restricted space and reduced tech-
In this context, the safety-relevant features of the DEHNguard series have nical requirements.
not been neglected. The DEHNguard 5 kA devices feature a “Thermo

900 458 DG TT 2P 5 275 NL
900 450 DG TT 2P 5 275 DEHNguard TT 2P 5 275 (NL)
Compact surge arrester for single-phase TT and TN systems (1+1 circuit); version NL with neutral left.
900 458 4013364320574 04 01 02 19 76 g
63,00 €
900 450 4013364157989 04 01 02 19 77 g
63,00 €
Type DG TT ... 2P 5 275 2P 5 275 NL
Part No. 900 450 900 458
SPD according to EN 61643-11 type 2 type 2
275 V (50 / 60 Hz)
Max. continuous operating voltage (a.c.) [L-N] (UC)
275 V (50 / 60 Hz)
Surge Arresters – Type 2 Max. continuous operating voltage (a.c.) [N-PE] (UC) 255 V (50 / 60 Hz) 255 V (50 / 60 Hz)
5 kA
5 kA
Nominal discharge current (8/20 µs) [L-N] (In)
Nominal discharge current (8/20 µs) [N-PE] (In)
20 kA
20 kA
15 kA
Max. discharge current (8/20 µs) [L-N] (Imax)
15 kA
Max. discharge current (8/20 µs) [N-PE] (Imax)
Voltage protection level (UP) 40 kA 40 kA
≤ 1.5 kV
≤ 1.5 kV
Max. mains-side overcurrent protection MCB C 63 A MCB C 63 A
DEHNguard TT 5 275 (NL)
900 459 DG TT 5 275 NL
900 455 DG TT 5 275
Compact surge arrester for TT and TN-S systems (3+1 circuit); version NL with neutral left.
900 459 4013364320581 04 01 02 19 143 g
128,00 €
900 455 4013364157996 04 01 02 19 143 g
128,00 €
Type DG TT ... 5 275 5 275 NL
Part No. 900 455 900 459
SPD according to EN 61643-11 type 2 type 2
Max. continuous operating voltage (a.c.) [L-N] (UC) 275 V (50 / 60 Hz) 275 V (50 / 60 Hz)
Max. continuous operating voltage (a.c.) [N-PE] (UC) 255 V (50 / 60 Hz) 255 V (50 / 60 Hz)
Nominal discharge current (8/20 µs) [L-N] (In) 5 kA 5 kA
Nominal discharge current (8/20 µs) [N-PE] (In) 20 kA 20 kA
Max. discharge current (8/20 µs) [L-N] (Imax) 15 kA 15 kA
Max. discharge current (8/20 µs) [N-PE] (Imax) 40 kA 40 kA
Voltage protection level (UP) ≤ 1.5 kV ≤ 1.5 kV
Max. mains-side overcurrent protection MCB C 63 A MCB C 63 A
64 You will find detailed product information on our website Valid as of August 1, 2020