ITAK Ex (i)

Prewired unit
Built-in arrester, tested to ATEX and FISCO
Suitable for protecting Ex (i) measuring circuits

ITAK EXI BXT

Prewired BXT ML4 BD EX 24 and BXT BAS EX surge arrester unit completely mounted in a junction box for intrinsically safe measuring circuits, meets FISCO requirements.

1 Product

Part No. 989408 ITAK EXI BXT 24

GTIN 4013364120396, Customs tariff No. (EU): 85371098, Gross weight: 1.00 kg, PU: 1.00 pc(s)

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Prewired ITAK EXI BXT 24 surge arrester unit
Switchbox for information technology systems
with integrated SPD, SPD class TYPE 2/P1
for the protection of intrinsically safe circuits for
2 pair, suitable for mounting in Ex zones 1 or 2
Max. input voltage acc. to EN 60079-11: 30 V
Max. input current acc. EN 60079-11: 0.5 A
Total nominal discharge current (8/20 µs): 20 kA

Brand: DEHN
Type: ITAK EXI BXT 24
Part No.: 989408
or equivalent.

Technical data

SPD class	T
Max. continuous operating voltage (d.c.) (U_C )	33 V
Max. input current acc. EN 60079-11 (I_i )	0.5 A
Total nominal discharge current (8/20 µs) (I_n )	20 kA
Cut-off frequency line-line (f_G )	7.7 MHz
Degree of protection	IP 65
Approvals for installed BXT	CSA, ATEX, IECEx, CSA & USA Hazloc, SIL

SPD class	T
SPD monitoring system	LifeCheck
Nominal voltage (U_N )	24 V
Max. continuous operating voltage (d.c.) (U_C )	33 V
Max. input voltage acc. to EN 60079-11 (U_i )	30 V
Max. input current acc. EN 60079-11 (I_i )	0.5 A
Total nominal discharge current (8/20 µs) (I_n )	20 kA
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
Operating temperature range (T_U )	-40 °C ... +80 °C
Degree of protection	IP 65
For mounting on	walls in Ex zone 1, 2
Connection (input / output)	cable gland (M20 x 1.5)
Cross-sectional area, solid	0.08-4 mm²
Cross-sectional area, flexible	0.08-2.5 mm²
Cross-sectional area (equipotential bonding)	4 mm²
Tightening torque (terminals)	0.4 Nm
Earthing via	screw terminal on enclosure panel
Enclosure material	aluminium, grey
Test standards for installed BXT	IEC 61643-21 / EN 61643-21
Approvals for installed BXT	CSA, ATEX, IECEx, CSA & USA Hazloc, SIL

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ITAK Ex (i)

ITAK EXI BXT

Part No. 989408 ITAK EXI BXT 24

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ITAK Ex (i)

ITAK EXI BXT

Part No. 989408 ITAK EXI BXT 24

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