310 / 582
BETA Protecting
Overvoltage Protection Devices
Configuration
6/24
Siemens ET B1 · 10/2008
6
*
You can order this quantity or a multiple thereof.
Combination surge arresters, type 1 and type 2
Surge arresters, type 2
5
SD7 441-1 for 1-wire systems
5
SD7 442-1 for TN-S/TT systems
5
SD7 443-1 for TN-C systems
5
SD7 444-1 for TN-S/TT systems
5
SD7 463-. for TN-C systems
5
SD7 473-. for IT systems
RS = remote signaling
RS
I2_16015
L1
L1
PEN
PEN
F1
PEN
L1
N
PE
L1
N
PE
F1
I2_13784b
L1
L1
N
RS
I2_13786b
L1
PEN
L2
L3
F1
PEN
L1
L2
L3
PEN
L2
L3
L1
RS
I2_13788b
L1
L2
L3
N
PE
L1
L2
L3
N
PE
F1
L1
L2
L3
N
RS
F1
L1
L2
L3
PEN
L1
L2
L3
PEN
F2
I2_13944
PEN
L1 L2 L3
RS
F1
L1
L2
L3
PE
L1
L2
L3
PE
F2
I2_13945
PE
L1 L2 L3
RS
© Siemens AG 2008