DEHNshield®

Application-optimised prewired combined lightning current and surge arrester based on spark gap technology
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements
For protecting residential buildings and special applications (see brochure No. DS193)

Capable of protecting terminal equipment
Discharge capacity up to 50 kA (10/350 µs)
Operating state/fault indication by indicator flag in the inspection window

For protecting compact low-voltage consumer's installations against surges, even in case of direct lightning strikes. For installation in conformity with the lightning protection zones concept at the boundaries from 0_A – 2.

Details

DEHNshield TNC 255: Application-optimised combined lightning current and surge arrester for TN-C systems
DEHNshield TNS 255: Application-optimised combined lightning current and surge arrester for TN-S systems
DEHNshield TT 255: Application-optimised combined lightning current and surge arrester for TT and TN-S systems ("3+1" circuit)
DEHNshield TN 255: Application-optimised combined lightning current and surge arrester for single-phase TN systems
DEHNshield TT 2P 255: Application-optimised combined lightning current and surge arrester for single-phase TT and TN systems ("1+1" circuit)

The space-saving and application-optimised DEHNshield family offers various benefits that are characteristic of spark-gap-based Type 1 arresters such as the "wave breaker function". This function and the associated reduction of the pulse time reduce the energy of the lightning current to an acceptable level for downstream protection stages or terminal equipment. Moreover, DEHNshield arresters are directly energy coordinated with other arresters of the Red/Line product family.
Application-optimised DEHNshield combined lightning current and surge arresters combine lightning equipotential bonding up to 50 kA (10/350 µs) lightning impulse currents and surge protection in a single device.
This clearly distinguishes DEHNshield from varistor-based arresters of this application and performance class.

Due to their technical parameters which are rated for use in simple and compact electrical installations, DEHNshield arresters are ideally suited for this application class. For this reason, they are a space-saving and application-optimised solution in particular for residential buildings.
DEHNshield arresters also provide optimal protection in buildings without external lightning protection system where roof superstructures or overhead line supplies are installed. According to VdS 2031, it is advisable to use Type 1 SPDs for these buildings. A detailed application description can be found in brochure DS193.
If an installation is protected by backup fuses up to 160 A, no additional backup fuse is required.
If applications are not sufficiently defined, it is advisable to use DEHNventil. Fulfilling the most stringent technical requirements, DEHNventil provides adequate protection at any time and is suitable for any application.
The energy coordinated arresters even allow to protect terminal equipment if the distance between DEHNshield and the consumers is ≤ 5 m. Owing to their non-exhausting spark gap and low space requirements, the application-optimised combined lightning current and surge arresters can be easily integrated into distribution boards.
The follow-current-limiting spark gap technology ensures selectivity even in case of low-value fuses (35 A gL/gG), meaning that upstream fuses are not tripped by mains follow currents.

Busbars and pin-shaped terminals from DEHN + SÖHNE can be used for connecting DEHNshield to other DIN rail mounted devices. The type designation of DEHNshield allows to easily choose the right arrester for the relevant system configuration of the low-voltage consumer’s installation.
The operating state/fault indication of every protective path immediately provides information on the availability of the arrester even if no operating current is present.

Further Models / Accessory:

DEHNshield TNC
DEHNshield TNS
DEHNshield TT
DEHNshield TN
DEHNshield TT 2P

DEHNshield TNC

Basic circuit diagram DSH TNC 255

Dimension drawing DSH TNC 255

Application-optimised prewired combined lightning current and surge arrester for TN-C systems

Application-optimised prewired spark-gap-based combined lightning current and surge arrester
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements

Capable of protecting terminal equipment

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-1
Energy coordination with terminal equipment
Energy coordination with terminal equipment (≤ 5 m)
Nominal a.c. voltage	U_N	V
Max. continuous operating a.c. voltage	U_C	V
Lightning impulse current (10/350 µs) [L1+L2+L3-PEN]	I_total	kA
Specific energy [L1+L2+L3-PEN]	W/R	kJ/ohms
Lightning impulse current (10/350 µs) [L-PEN]	I_imp	kA
Specific energy [L-PEN]	W/R	kJ/ohms
Nominal discharge current (8/20 µs)	I_n	kA
Voltage protection level	U_P	kV
Follow current extinguishing capability a.c.	I_fi	kA_rms
Response time	t_A	ns
Max. mains-side overcurrent protection		A gL/gG
Temporary overvoltage (TOV)	U_T	V / 5 sec.
TOV characteristic
Operating temperature range	T_U
Operating state/fault indication
Number of ports
Cross-sectional area (L1, L2, L3, PEN)	min.
Cross-sectional area (L1, L2, L3, PEN)	max.
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity		module(s), DIN 43880
Amount
Further Pictures
Options

DSH TNC 255
941 300
Type 1 / Class I
Type 1 + Type 2
Type 1 + Type 2 + Type 3
230 / 400
255
37.5
352.00
12.5
39.06
12.5 / 37.5
≤ 1.5
10
≤ 100
160
440
withstand
-40 °C...+80 °C
green / red
1
1.5 mm² solid/flexible
35 mm² stranded/25 mm² flexible
35 mm DIN rails acc. to EN 60715
thermoplastic, red, UL 94 V-0
indoor
IP 20
4
pc(s)

Further Information

Further Information
	Product Specifications (Text)
	Product Specifications (PDF)
	Installation Instructions

Certificates
	CE_DEHNshield

DEHNshield TNS

Basic circuit diagram DSH TNS 255

Dimension drawing DSH TNS 255

Application-optimised prewired combined lightning current and surge arrester for TN-S systems

Application-optimised prewired spark-gap-based combined lightning current and surge arrester
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements

Capable of protecting terminal equipment

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-1
Energy coordination with terminal equipment
Energy coordination with terminal equipment (≤ 5 m)
Nominal a.c. voltage	U_N	V
Max. continuous operating a.c. voltage	U_C	V
Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE]	I_total	kA
Specific energy [L1+L2+L3+N-PE]	W/R	kJ/ohms
Lightning impulse current (10/350 µs) [L, N-PE]	I_imp	kA
Specific energy [L,N-PE]	W/R	kJ/ohms
Nominal discharge current (8/20 µs)	I_n	kA
Voltage protection level [L-PE]/[N-PE]	U_P	kV
Follow current extinguishing capability a.c.	I_fi	kA_rms
Response time	t_A	ns
Max. mains-side overcurrent protection		A gL/gG
Temporary overvoltage (TOV) [L-N]	U_T	V / 5 sec.
TOV characteristic
Operating temperature range	T_U
Operating state/fault indication
Number of ports
Cross-sectional area (L1, L2, L3, N, PE, 9)	min.
Cross-sectional area (L1, L2, L3, N, PE, 9)	max.
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity		module(s), DIN 43880
Amount
Further Pictures
Options

DSH TNS 255
941 400
Type 1 / Class I
Type 1 + Type 2
Type 1 + Type 2 + Type 3
230 / 400
255
50
625.00
12.5
39.06
12.5 / 50
≤ 1.5 / ≤ 1.5
10
≤ 100
160
440
withstand
-40 °C...+80 °C
green / red
1
1.5 mm² solid/flexible
35 mm² stranded/25 mm² flexible
35 mm DIN rails acc. to EN 60715
thermoplastic, red, UL 94 V-0
indoor
IP 20
4
pc(s)

Further Information

Further Information
	Product Specifications (Text)
	Product Specifications (PDF)
	Installation Instructions

Certificates
	CE_DEHNshield

DEHNshield TT

Basic circuit diagram DSH TT 255

Dimension drawing DSH TT 255

Application-optimised prewired combined lightning current and surge arrester for TT and TN-S systems ("3+1" circuit)

Application-optimised prewired spark-gap-based combined lightning current and surge arrester
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements

Capable of protecting terminal equipment

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-1
Energy coordination with terminal equipment
Energy coordination with terminal equipment (≤ 5 m)
Nominal a.c. voltage	U_N	V
Max. continuous operating a.c. voltage	U_C	V
Lightning impulse current (10/350 µs) [L1+L2+L3+N-PE]	I_total	kA
Specific energy [L1+L2+L3+N-PE]	W/R	kJ/ohms
Lightning impulse current (10/350 µs) [L-N]/[N-PE]	I_imp	kA
Specific energy [L-N]/[N-PE]	W/R	kJ/ohms
Nominal discharge current (8/20 µs) [L-N]/[N-PE]	I_n	kA
Voltage protection level [L-N]/[N-PE]	U_P	kV
Follow current extinguishing capability [L-N]/[N-PE]	I_fi
Response time	t_A	ns
Max. mains-side overcurrent protection		A gL/gG
Temporary overvoltage (TOV) [L-N]	U_T	V / 5 sec.
Temporary overvoltage (TOV) [N-PE]	U_T	V / 200 ms
TOV characteristic
Operating temperature range	T_U
Operating state/fault indication
Number of ports
Cross-sectional area (L1, L2, L3, N, PE, 9)	min.
Cross-sectional area (L1, L2, L3, N, PE, 9)	max.
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity		module(s), DIN 43880
Amount
Further Pictures
Options

DSH TT 255
941 310
Type 1 / Class I
Type 1 + Type 2
Type 1 + Type 2 + Type 3
230 / 400
255
50
625.00
12.5 / 50
39.06 / 625.00
12.5 / 50
≤ 1.5 / ≤ 1.5
10 kA_rms / 100 A_rms
≤ 100
160
440
1200
withstand
-40 °C...+80 °C
green / red
1
1.5 mm² solid/flexible
35 mm² stranded/25 mm² flexible
35 mm DIN rails acc. to EN 60715
thermoplastic, red, UL 94 V-0
indoor
IP 20
4
pc(s)

Further Information

Further Information
	Product Specifications (Text)
	Product Specifications (PDF)
	Installation Instructions

Certificates
	CE_DEHNshield

DEHNshield TN

Basic circuit diagram DSH TN 255

Dimension drawing DSH TN 255

Application-optimised prewired combined lightning current and surge arrester for single-phase TN systems

Application-optimised prewired spark-gap-based combined lightning current and surge arrester
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements

Capable of protecting terminal equipment

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-1
Energy coordination with terminal equipment
Energy coordination with terminal equipment (≤ 5 m)
Nominal a.c. voltage	U_N	V
Max. continuous operating a.c. voltage	U_C	V
Lightning impulse current (10/350 µs) [L+N-PE]	I_total	kA
Specific energy [L+N-PE]	W/R	kJ/ohms
Lightning impulse current (10/350 µs) [L, N-PE]	I_imp	kA
Specific energy [L,N-PE]	W/R	kJ/ohms
Nominal discharge current (8/20 µs)	I_n	kA
Voltage protection level [L-PE]/[N-PE]	U_P	kV
Follow current extinguishing capability a.c.	I_fi	kA_rms
Response time	t_A	ns
Max. mains-side overcurrent protection		A gL/gG
Temporary overvoltage (TOV) [L-N]	U_T	V / 5 sec.
TOV characteristic
Operating temperature range	T_U
Operating state/fault indication
Number of ports
Cross-sectional area (L, N, PE, 9)	min.
Cross-sectional area (L, N, PE, 9)	max.
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity		module(s), DIN 43880
Amount
Further Pictures
Options

DSH TN 255
941 200
Type 1 / Class I
Type 1 + Type 2
Type 1 + Type 2 + Type 3
230
255
25
156.25
12.5
39.06
12.5 / 25
≤ 1.5 /≤ 1.5
10
≤ 100
160
440
withstand
-40 °C...+80 °C
green / red
1
1.5 mm² solid/flexible
35 mm² stranded/25 mm² flexible
35 mm DIN rails acc. to EN 60715
thermoplastic, red, UL 94 V-0
indoor
IP 20
2
pc(s)

Further Information

Further Information
	Product Specifications (Text)
	Product Specifications (PDF)
	Installation Instructions

DEHNshield TT 2P

Basic circuit diagram DSH TT 2P 255

Dimension drawing DSH TT 2P 255

Application-optimised prewired combined lightning current and surge arrester for single-phase TT and TN systems ("1+1" circuit)

Application-optimised prewired spark-gap-based combined lightning current and surge arrester
Space-saving arrester for compact and simply equipped electrical installations with reduced technical requirements

Capable of protecting terminal equipment

Type
Part No.
SPD according to EN 61643-11 / IEC 61643-1
Energy coordination with terminal equipment
Energy coordination with terminal equipment (≤ 5 m)
Nominal a.c. voltage	U_N	V
Max. continuous operating a.c. voltage	U_C	V
Lightning impulse current (10/350 µs) [L+N-PE]	I_total	kA
Specific energy [L+N-PE]	W/R	kJ/ohms
Lightning impulse current (10/350 µs) [L-N]/[N-PE]	I_imp	kA
Specific energy [L-N]/[N-PE]	W/R	kJ/ohms
Nominal discharge current (8/20 µs) [L-N]/[N-PE]	I_n	kA
Voltage protection level [L-N]/[N-PE]	U_P	kV
Follow current extinguishing capability [L-N]/[N-PE]	I_fi
Response time	t_A	ns
Max. mains-side overcurrent protection		A gL/gG
Temporary overvoltage (TOV) [L-N]	U_T	V / 5 sec.
Temporary overvoltage (TOV) [N-PE]	U_T	V / 200 ms
TOV characteristic
Operating temperature range	T_U
Operating state/fault indication
Number of ports
Cross-sectional area (L, N, PE, 9)	min.
Cross-sectional area (L, N, PE, 9)	max.
For mounting on
Enclosure material
Place of installation
Degree of protection
Capacity		module(s), DIN 43880
Amount
Further Pictures
Options

DSH TT 2P 255
941 110
Type 1 / Class I
Type 1 + Type 2
Type 1 + Type 2 + Type 3
230
255
25
156.25
12.5 / 25
39.06 / 156.25
12.5 / 25
≤ 1.5 / ≤ 1.5
10 kA_rms / 100 A_rms
≤ 100
160
440
1200
withstand
-40 °C...+80 °C
green / red
1
1.5 mm² solid/flexible
35 mm² stranded/25 mm² flexible
35 mm DIN rails acc. to EN 60715
thermoplastic, red, UL 94 V-0
indoor
IP 20
2
pc(s)

Further Information