BLITZDUCTOR XT Ex (i) – Protection Modules

Surge arrester for intrinsically safe measuring circuits and bus systems

Maximum discharge capacity for two-pole, three-pole or four-pole interfaces
Low voltage protection level, capable of protecting terminal equipment
Wide range of approvals: ATEX, IECEx, CSA Hazloc

Arrester consists of a protection module and a base part

Easy replacement of protection modules without force
All protection components are integrated in the protection module
Arrester with integrated RFID LifeCheck for preventive arrester monitoring

Functional and attractive design

DIN rail mounted arrester with integrated earthing
Minimum space requirements, two pairs over a width of 12 mm
Vibration and shock-tested for safe operation

Details

Prewired surge arrester unit ITAK EXI BXT 24.

lorem ipsum — Prewired surge arrester unit ITAK EXI BXT 24.

Two-part design comprising a universal base part and an application-specific protection module.

All protection elements are integrated in the plug-in module and are monitored by means of LifeCheck.

The module locking mechanism ensures that the module is vibration-proof and protected against polarity reversal.

BXT ML4 BD EX 24

Space-saving surge arrester module with RFID LifeCheck for protecting two pairs in intrinsically safe measuring circuits and bus systems, meets FISCO requirements. ATEX. Insulation strength > 500 V line-earth.
If LifeCheck detects thermal or electrical overload, the arrester has to be replaced. This status is indicated contactlessly by DEHNrecord LC / SCM / MCM.

1 Product

Part No. 920381 BXT ML4 BD EX 24

GTIN 4013364109025, Customs tariff No. (EU): 85363010, Gross weight: 29.90 g, PU: 1.00 pc(s)

Predecessor

Images

Additional information

CAD files

BXT ML4 BD EX 24 surge protection module with LifeCheck
BLITZDUCTOR XT surge arrester module
SPD class: type 2 / P1
tested to EN 61643-21 and
energy-coordinated acc. to IEC 61643-22
For protecting two pairs of intrinsically safe
and galvanically isolated balanced interfaces,
4-20 mA, Profibus PA.
Integrated LifeCheck for contactless arrester testing
Can be plugged into BXT BAS EX base parts
Max. input voltage acc. to EN 60079-11: 30 V
Max. input current acc. to EN 60079-11: 0.5 A
C2 Total nominal discharge current (8/20 µs): 20 kA

Brand: DEHN
Type: BXT ML4 BD EX 24
Part No.: 920381
or equivalent.

Certificates

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	20 kA
Cut-off frequency line-line (f_G )	7.7 MHz
Approvals ^*)	CSA, ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
*⁾ For more detailed information, please visit www.dehn-international.com.

SPD class	T
SPD monitoring	LifeCheck
Nominal voltage (U_N )	24 V
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. continuous operating voltage (a.c.) (U_c )	23 V
Max. input voltage acc. to EN 60079-11 (U_i )	30 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	20 kA
C2 Nominal discharge current (8/20 µs) per line (I_n )	5 kA
Voltage protection level line-line for I_nC2 (U_P )	≤ 52 V
Voltage protection level line-PG for I_nC2 (U_P )	≤ 1400 V
Voltage protection level line-line at 1 kV/µs C3 (U_P )	≤ 45 V
Voltage protection level line-PG at 1 kV/µs C3 (U_P )	≤ 1100 V
Series resistance per line	1.0 ohm
Cut-off frequency line-line (f_G )	7.7 MHz
Capacitance line-line (C)	≤ 0.8 nF
Capacitance line-PG (C)	≤ 16 pF
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection (with plugged-in protection module)	IP 20
Plugs into	base part
Earthing via	base part
Enclosure material	polyamide PA 6.6
Colour	blue
Test standards	IEC 61643-21 / EN 61643-21
Approvals ^*)	CSA, ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
SIL classification	up to SIL3 *⁾
ATEX approvals (1)	KEMA 06ATEX0274 X: II 2 (1) G Ex ia [ia Ga] IIC T6 ... T4 Gb
ATEX approvals (2)	KEMA 06ATEX0274 X: II 2 G Ex ib IIC T6 ... T4 Gb
IECEx approvals (1)	DEK 11.0078X: Ex ia [ia Ga] IIC T6 ... T4 Gb
IECEx approvals (2)	DEK 11.0078X: Ex ib IIC T6 ... T4 Gb
CSA & USA Hazloc approvals (1)	70000011: Class I Div. 1; Class I Zone 1
CSA & USA Hazloc approvals (2)	70000011: Ex ia [ia] IIC T6 ... T4
China Compulsory Certification	CCC No. 2021312304001156
Inmetro approvals	TÜV 17.0697 X: Ex ia [ia Ga] IIC T6 ... T4 Gb
*⁾ For more detailed information, please visit www.dehn-international.com.

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BXT ML2 BD S EX 24

Space-saving surge arrester module with RFID LifeCheck for protecting one pair in intrinsically safe measuring circuits and bus systems, direct or indirect shield earthing. Insulation strength > 500 V line-earth.
If LifeCheck detects thermal or electrical overload, the arrester has to be replaced. This status is indicated contactlessly by DEHNrecord LC / SCM / MCM.

1 Product

Part No. 920280 BXT ML2 BD S EX 24

GTIN 4013364142138, Customs tariff No. (EU): 85363010, Gross weight: 29.00 g, PU: 1.00 pc(s)

Predecessor

Images

Additional information

CAD files

BXT ML2 BD S EX 24 surge arrester module with LifeCheck
BLITZDUCTOR XT surge arrester module
SPD class: type 2 / P1
tested to EN 61643-21 and
energy-coordinated acc. to IEC 61643-22
For protecting one pair of intrinsically safe
and galvanically isolated balanced interfaces,
4-20 mA, Profibus PA.
Direct or indirect shield earthing
Integrated LifeCheck for contactless arrester testing
Can be plugged into BXT BAS EX base parts
Max. input voltage acc. to EN 60079-11: 30 V
Max. input current acc. to EN 60079-11: 0.5 A
C2 Total nominal discharge current (8/20 µs): 10 kA

Brand: DEHN
Type: BXT ML2 BD S EX 24
Part No.: 920280
or equivalent.

Certificates

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
Cut-off frequency line-line (f_G )	6 MHz
Approvals ^*)	ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
*⁾ For details see: www.dehn-international.com

SPD class	T
SPD monitoring	LifeCheck
Nominal voltage (U_N )	24 V
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. continuous operating voltage (a.c.) (U_c )	23.3 V
Max. input voltage acc. to EN 60079-11 (U_i )	30 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
C2 Nominal discharge current (8/20 µs) per line (I_n )	5 kA
Voltage protection level line-line for I_impD1 (U_P )	≤ 50 V
Voltage protection level line-PG for I_impD1 (U_P )	≤ 1300 V
Voltage protection level line-line for I_nC2 (U_P )	≤ 52 V
Voltage protection level line-PG for I_nC2 (U_P )	≤ 1400 V
Voltage protection level line-line at 1 kV/µs C3 (U_P )	≤ 45 V
Voltage protection level line-PG at 1 kV/µs C3 (U_P )	≤ 1100 V
Series resistance per line	1.0 ohm
Cut-off frequency line-line (f_G )	6 MHz
Capacitance line-line (C)	≤ 1.0 nF
Capacitance line-PG (C)	≤ 16 pF
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection (with plugged-in protection module)	IP 20
Plugs into	base part
Earthing via	base part
Enclosure material	polyamide PA 6.6
Colour	blue
Test standards	IEC 61643-21 / EN 61643-21
Approvals ^*)	ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
ATEX approvals (1)	KEMA 06ATEX0274 X: II 2 (1) G Ex ia [ia Ga] IIC T6 ... T4 Gb
ATEX approvals (2)	KEMA 06ATEX0274 X: II 2 G Ex ib IIC T6 ... T4 Gb
IECEx approvals (1)	DEK 11.0078X: Ex ia [ia Ga] IIC T6 ... T4 Gb
IECEx approvals (2)	DEK 11.0078X: Ex ib IIC T6 ... T4 Gb
CSA & USA Hazloc approvals (1)	70000011: Class I Div. 1; Class I Zone 1
CSA & USA Hazloc approvals (2)	70000011: Ex ia [ia] IIC T6 ... T4
China Compulsory Certification	CCC No. 2021312304001156
Inmetro approvals	TÜV 17.0697 X: Ex ia [ia Ga] IIC T6 ... T4 Gb
*⁾ For details see: www.dehn-international.com

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BXT ML4 BC EX 24

Space-saving surge arrester module with RFID LifeCheck for protecting up to four unearthed single lines sharing a common reference potential in intrinsically safe measuring circuits, meets FISCO requirements. ATEX. Insulation strength > 500 V line-earth.
If LifeCheck detects thermal or electrical overload, the arrester has to be replaced. This status is indicated contactlessly by DEHNrecord LC / SCM / MCM.

1 Product

Part No. 920384 BXT ML4 BC EX 24

GTIN 4013364109162, Customs tariff No. (EU): 85363010, Gross weight: 28.60 g, PU: 1.00 pc(s)

Images

Additional information

CAD files

BXT ML4 BC EX 24 surge arrester module with LifeCheck
BLITZDUCTOR XT surge arrester module
SPD class: type 2 / P1
tested to EN 61643-21 and
energy-coordinated acc. to IEC 61643-22
For protecting four intrinsically safe single cores
of galvanically isolated interfaces
Temperature measurement
Integrated LifeCheck for contactless arrester testing
Can be plugged into BXT BAS EX base parts
Max. input voltage acc. to EN 60079-11: 30 V
Max. input current acc. to EN 60079-11: 0.5 A
C2 Total nominal discharge current (8/20 µs): 20 kA

Brand: DEHN
Type: BXT ML4 BC EX 24
Part No.: 920384
or equivalent.

Certificates

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	20 kA
Cut-off frequency line-line (f_G )	6.4 MHz
Approvals ^*)	CSA, ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
*⁾ For more detailed information, please visit www.dehn-international.com.

SPD class	T
SPD monitoring	LifeCheck
Nominal voltage (U_N )	24 V
Max. continuous operating voltage (d.c.) (U_c )	33 V
Max. continuous operating voltage (a.c.) (U_c )	23.3 V
Max. input voltage acc. to EN 60079-11 (U_i )	30 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	20 kA
C2 Nominal discharge current (8/20 µs) per line (I_n )	5 kA
Voltage protection level line-line for I_impD1 (U_P )	≤ 53 V
Voltage protection level line-PG for I_impD1 (U_P )	≤ 1300 V
Voltage protection level line-line for I_nC2 (U_P )	≤ 55 V
Voltage protection level line-PG for I_nC2 (U_P )	≤ 1400 V
Voltage protection level line-line at 1 kV/µs C3 (U_P )	≤ 45 V
Voltage protection level line-PG at 1 kV/µs C3 (U_P )	≤ 1100 V
Series resistance per line	1 ohm
Cut-off frequency line-line (f_G )	6.4 MHz
Capacitance line-line (C)	≤ 0.8 nF
Capacitance line-PG (C)	≤ 16 pF
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection (with plugged-in protection module)	IP 20
Plugs into	base part
Earthing via	base part
Enclosure material	polyamide PA 6.6
Colour	blue
Test standards	IEC 61643-21 / EN 61643-21
Approvals ^*)	CSA, ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
SIL classification	up to SIL3 *)
ATEX approvals (1)	KEMA 06ATEX0274 X: II 2 (1) G Ex ia [ia Ga] IIC T6 ... T4 Gb
ATEX approvals (2)	KEMA 06ATEX0274 X: II 2 G Ex ib IIC T6 ... T4 Gb
IECEx approvals (1)	DEK 11.0078X: Ex ia [ia Ga] IIC T6 ... T4 Gb
IECEx approvals (2)	DEK 11.0078X: Ex ib IIC T6 ... T4 Gb
CSA & USA Hazloc approvals (1)	70000011: Class I Div. 1; Class I Zone 1
CSA & USA Hazloc approvals (2)	70000011: Ex ia [ia] IIC T6 ... T4
China Compulsory Certification	CCC No. 2021312304001156
Inmetro approvals	TÜV 17.0697 X: Ex ia [ia Ga] IIC T6 ... T4 Gb
*⁾ For more detailed information, please visit www.dehn-international.com.

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BXT ML2 BD HF EX 6

Space-saving surge arrester module with RFID LifeCheck for protecting one pair in intrinsically safe measuring circuits and RS485 bus systems. Insulation strength > 500 V line-earth.
If LifeCheck detects thermal and electrical overload, the arrester has to be replaced. This status is indicated contactlessly by DEHNrecord LC / SCM / MCM.

1 Product

Part No. 920538 BXT ML2 BD HF EX 6

GTIN 4013364125285, Customs tariff No. (EU): 85363010, Gross weight: 27.20 g, PU: 1.00 pc(s)

Predecessor

Images

Additional information

CAD files

BXT ML2 BD HF EX 6 surge arrester module with LifeCheck
BLITZDUCTOR XT surge arrester module
SPD class: type 2 / P1
tested to EN 61643-21
and energy-coordinated acc. to IEC 61643-22
for protecting one pair of intrinsically safe circuits
and galvanically isolated RS485 bus systems
Integrated LifeCheck for contactless SPD testing
Can be plugged into BXT BAS EX base parts
Max. input voltage acc. to EN 60079-11: 4.2 V
Max. input current acc. to EN 60079-11: 4.8 A
C2 Total nominal discharge current (8/20 µs): 10 kA

Brand: DEHN
Type: BXT ML2 BD HF EX 6
Part No.: 920538
or equivalent.

Certificates

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_c )	6 V
Max. input current acc. to EN 60079-11 (I_i )	4.8 A
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
Cut-off frequency line-line (f_G )	100 MHz
Approvals ^*)	ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
*⁾ For more detailed information, please visit www.dehn-international.com.

SPD class	T
SPD monitoring	LifeCheck
Nominal voltage (U_N )	6 V
Max. continuous operating voltage (d.c.) (U_c )	6 V
Max. continuous operating voltage (a.c.) (U_c )	4.2 V
Max. input voltage acc. to EN 60079-11 (U_i )	4.2 V
Max. input current acc. to EN 60079-11 (I_i )	4.8 A
Max. input current acc. to EN 60079-11 (without protection module only up to 60 °C) (I_i )	4.8 A
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
C2 Nominal discharge current (8/20 µs) line-line (I_n )	300 A
C2 Nominal discharge current (8/20 µs) per line (I_n )	5 kA
Voltage protection level line-line for I_nC2 (U_P )	≤ 35 V
Voltage protection level line-PG for I_nC2 (U_P )	≤ 1800 V
Voltage protection level line-line at 1 kV/µs C3 (U_P )	≤ 20 V
Voltage protection level line-PG at 1 kV/µs C3 (U_P )	≤ 1400 V
Cut-off frequency line-line (f_G )	100 MHz
Capacitance line-line (C)	≤ 25 nF
Capacitance line-PG (C)	≤ 20 pF
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection (with plugged-in protection module)	IP 20
Plugs into	base part
Earthing via	base part
Enclosure material	polyamide PA 6.6
Colour	blue
Test standards	IEC 61643-21 / EN 61643-21
Approvals ^*)	ATEX, IECEx, CCC, CSA & USA Hazloc, SIL, Inmetro, UKCA
SIL classification	up to SIL3 *)
ATEX approvals (1)	KEMA 06ATEX0274 X: II 2 (1) G Ex ia [ia Ga] IIC T6 ... T4 Gb
ATEX approvals (2)	KEMA 06ATEX0274 X: II 2 G Ex ib IIC T6 ... T4 Gb
IECEx approvals (1)	DEK 11.0078X: Ex ia [ia Ga] IIC T6 ... T4 Gb
IECEx approvals (2)	DEK 11.0078X: Ex ib IIC T6 ... T4 Gb
CSA & USA Hazloc approvals (1)	70000011: Class I Div. 1; Class I Zone 1
CSA & USA Hazloc approvals (2)	70000011: Ex ia [ia] IIC T6 ... T4
China Compulsory Certification	CCC No. 2021312304001156
Inmetro approvals	TÜV 17.0697 X: Ex ib IIC T6 ... T4 Gb
*⁾ For more detailed information, please visit www.dehn-international.com.

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BXT M2 BD S EX 24

Space-saving surge arrester module for protecting one pair of intrinsically safe measuring circuits and bus systems, direct or indirect shield earthing, insulation strength > 500 V line-earth.

1 Product

Part No. 920383 BXT M2 BD S EX 24

GTIN 4013364126725, Customs tariff No. (EU): 85363010, Gross weight: 50.00 g, PU: 1.00 pc(s)

Images

Additional information

CAD files

BXT M2 BD S EX 24 surge arrester module
BLITZDUCTOR XT surge arrester module
SPD class: type 2 / P1
teested to EN 61643-21
and energy-coordinated acc. to IEC 61643-22
for protecting one pair of intrinsically safe
and galvanically isolated balanced interfaces,
4-20 mA, Profibus PA, direct or indirect shield earthing
Can be plugged into BXT BAS EX base parts
Max. input voltage acc. to EN 60079-11: 30 V
Max. input current acc. to EN 60079-11: 0.5 A
C2 Total nominal discharge current (8/20 µs): 10 kA

Brand: DEHN
Type: BXT M2 BD S EX 24
Part No.: 920383
or equivalent.

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_c )	36 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
Cut-off frequency line-line (f_G )	7.7 MHz
Approvals ^*)	ATEX, CSA & USA Hazloc, SIL
*⁾ For details see: www.dehn-international.com

SPD class	T
Nominal voltage (U_N )	24 V
Max. continuous operating voltage (d.c.) (U_c )	36 V
Max. continuous operating voltage (a.c.) (U_c )	25.4 V
Max. input voltage acc. to EN 60079-11 (U_i )	30 V
Max. input current acc. to EN 60079-11 (I_i )	0.5 A
D1 Total lightning impulse current (10/350 µs) (I_imp )	4 kA
D1 Lightning impulse current (10/350 µs) per line (I_imp )	1 kA
C2 Total nominal discharge current (8/20 µs) (I_n )	10 kA
C2 Nominal discharge current (8/20 µs) per line (I_n )	5 kA
Voltage protection level line-line for I_impD1 (U_P )	≤ 55 V
Voltage protection level line-PG for I_impD1 (U_P )	≤ 1300 V
Voltage protection level line-line for I_nC2 (U_P )	≤ 58 V
Voltage protection level line-PG for I_nC2 (U_P )	≤ 1400 V
Voltage protection level line-line at 1 kV/µs C3 (U_P )	≤ 50 V
Voltage protection level line-PG at 1 kV/µs C3 (U_P )	≤ 1100 V
Series resistance per line	1.0 ohm
Cut-off frequency line-line (f_G )	7.7 MHz
Capacitance line-line (C)	≤ 0.8 nF
Capacitance line-PG (C)	≤ 16 pF
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection (with plugged-in protection module)	IP 20
Plugs into	base part
Earthing via	base part
Enclosure material	polyamide PA 6.6
Colour	blue
Test standards	IEC 61643-21 / EN 61643-21
Approvals ^*)	ATEX, CSA & USA Hazloc, SIL
ATEX approvals (1)	KEMA 09ATEX0178 X: II 2 (1) G Ex ia IIC T4 ... T6 Gb
ATEX approvals (2)	KEMA 09ATEX0177 X: II 3 G Ex nA II T4 ... T6 Gc
IECEx approvals (1)	KEM 09.0077X: Ex ia [ia Ga] IIC T4 ... T6 Gb
IECEx approvals (2)	KEM 09.0077X: Ex nA IIC T4 ... T6 Gc
CSA & USA Hazloc approvals (1)	2392869: Class I Div. 1; Class I Zone 1
CSA & USA Hazloc approvals (2)	2392869: Ex ia IIC T4 ... T6
*⁾ For details see: www.dehn-international.com

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BLITZDUCTOR XT Ex (i) – Protection Modules

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