5SD7422-1
SURGE ARR.C/T2/II 350V 2P RD

From SIEMENS

Surge arrester Type 2 Requirement class C, UC 350V Pluggable protective modules 2-pole, 1+1 circuit for TN-S and TT systems with FRN display, narrow Design
Article number5SD7422-1
General data
StandardIEC 61643-11: 2011, EN 61643-11: 2012
Product designationSurge protection device
SPD classification / acc. to EN 61643-11
Test Class I, Type 1No
Test Class II, Type 2Yes
Test Class III, Type 3No
Number of SPD ports1
Design of the productSurge arrester
Design of pole1+N/PE
Designation of the protective pathsL-N, N-PE
accessories1 x 5SD7428-1 + 1 x 5SD7428-0
Mounting typeDIN rail NS 35
Material / of the enclosurePBT
Size of surge arrester1,4 MW
Degree of pollution2
Overvoltage category / acc. to IEC 61010-1III
Protection class IP / at connection all terminalsIP20
Shock acceleration30 gn
Vibrational acceleration / at 5 Hz ... 500 Hz / limited to 2,5 h / per axis5 gn
Ambient temperature / during operation-40 °C ... 80 °C
Ambient temperature / during storage and transport-40 °C ... 80 °C
Relative humidity / during operation5 % ... 95 %
Installation altitude / at height above sea level / maximum2 000 m
Width25.4 mm
Height98 mm
Depth71.5 mm
Net weight210 g
Electrical data
Type of distribution systemTT, TN-S
Operating voltage240 V AC
Continuous operating voltage
between N and PE264 V
between L and (PE)N350 V
Load current40 A
Protective conductor current1 µA (255 V AC)
Discharge current
at (8/20) µs20 kA
1 phase / at (8/20) µs40 kA
Follow current extinguishing capability
between N and PE100 A (264 V a.c.)
Short-circuit rating (SCCR) / at 264 V25 kA
Protection level
maximum1.5 kV
between N and L1.4 kV
between PE and N and/or L1.5 kV
Residual voltage
between L and (PE)N
— at rated value of discharge current / maximum1.5 kV
— at 10 kA / maximum1.3 kV
— at 5 kA / maximum1.2 kV
— at 4 kA maximum1.1 kV
— at 2 kA maximum1 kV
between N and PE
— at rated value of discharge current / maximum0.5 kV
— at 10 kA / maximum0.5 kV
— at 5 kA / maximum0.5 kV
— at 4 kA maximum0.5 kV
— at 2 kA maximum0.5 kV
Response value of the surge voltage / at 6 kV / at (1.2/50) µs
between N and PE1.5 kV
Response time
between L and (PE)N25 ns
between N and PE100 ns
Settable response factor / of trip current1.6
Fuse protection type / at V-shaped connection63 A AC (gG)
Fuse protection type / for T-connector315 A AC (gG)
Connections/Terminals
Type of electrical connectionScrew terminal
Wire stripping length16 mm
Tightening torque4.3 ... 4.7
Wire stripping length16 mm
Connectable conductor cross-section
for finely stranded conductor2.5 ... 16
for rigid conductor2.5 ... 25
finely stranded2.5 ... 16
AWG number / as coded connectable conductor cross section12 ... 4
Design of the thread / of the connection screwM5
Signal designOptical, remote signaling contact
Indicator/remote signaling
Switching function / of the remote-signaling contactsPDT contact
Operating voltage / of the remote-signaling contacts
at AC5 ... 250
at DC125 V (200 mA DC)
Operating current / of the remote-signaling contacts
at AC5 mA ... 1 A
at DC1 A
Connection type of remote signaling contactM2
Connectable conductor cross-section
for remote signaling contacts / for rigid conductor0.14 ... 1.5
for finely stranded conductor / for remote signaling contacts0.14 ... 1.5
AWG number / as coded connectable conductor cross section / for remote signaling contacts / minimum28
AWG number / as coded connectable conductor cross section / for remote signaling contacts / maximum16
Tightening torque / for remote signaling contacts0.25 N·m
Wire stripping length / of the cable / for remote signaling contacts7 mm
NEMA/UL - Data
Type of surge protective device (SPD) / according to UL4CA
Type of distribution system / according to UL1
Type of distribution systemTT, TN-S
Designation of the protective paths / according to ULL-N, L-G, N-G
TOV behavior
at TOV test voltage (L-N)415 V AC (5 s / withstand mode) / 440 V AC (120 min / safe failure mode)
at TOV test voltage (N-PE)1200 V (200 ms / withstand mode)
Measured Limiting Voltage (MLV) / between L and Ground (GND)2.08 kV
Measured Limiting Voltage (MLV) / between L and N2 kV
Measured Limiting Voltage (MLV) / between N and Ground (GND)0.95 kV
Maximum Continuous Operating Voltage (MCOV) / between L and Ground (GND)350 V
Maximum Continuous Operating Voltage (MCOV) / between L and N350 V
Maximum Continuous Operating Voltage (MCOV) / between N and Ground (GND)264 V
Leakage current / according to UL20 kA
Leakage current / according to UL20 kA
Leakage current / according to UL20 kA
Sequential current
between N and Ground (GND) / according to UL200 A (264 V AC)
AWG number / as coded connectable conductor cross section / for remote signaling contacts / according to UL / minimum30
AWG number / as coded connectable conductor cross section / for remote signaling contacts / according to UL / maximum14
Installation altitude above sea level / according to UL6 562 ft
Gross weight [lb] / according to UL0.51 lb
Net weight [lb] / according to UL0.46 lb
Combustibility class acc. to UL 94V0
Standards / according to ULUL 1449 edition 4
Operating voltage / of the remote-signaling contacts / according to UL125 V
Operating current / of the remote-signaling contacts / at AC / according to UL1 A
AWG number / as coded connectable conductor cross section / according to UL / minimum14
AWG number / as coded connectable conductor cross section / according to UL / maximum2

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