Siemens manufactures the 5SD74641 surge arrester, rated at 40 kA, suitable for protecting electrical installations from voltage surges. This device is commonly used in residential, commercial, and industrial applications to prevent damage from lightning strikes or electrical faults. Its robust design ensures reliable performance and safety for various electrical systems.
| Type |
Surge arrester |
| Category type 2 |
TRUE |
| Construction size |
4 modular spacing |
| Degree of protection (IP) |
IP20 |
| Dim |
(L x W x H) 71.5 x 71.5 x 99 mm |
| Height |
99mm |
| Integrated backup fuse |
FALSE |
| IP Rating |
IP20 |
| Leakage Current |
40kA |
| Length |
71.5mm |
| Max. conductor cross section flexible (fine-strand) |
25mm² |
| Max. conductor cross section solid (solid, stranded) |
35mm² |
| Max. continuous voltage AC |
350V |
| Max. discharge surge current (8/20) |
40 |
| Max. overcurrent protection device, parallel connection (fuse) |
125 |
| Max. overcurrent protection device, series connection (fuse) |
80 |
| Misc Attribute |
Material: PA 6.6/PBT |
| Nominal discharge surge current (8/20) |
40kA |
| Number of conductors (without earthing) |
3 |
| Operating Temperature |
-40 °C - +80°C |
| Short-circuit breaking capacity (Isccr) |
25 |
| Signalling at the device |
Optic |
| System configuration DC |
FALSE |
| System configuration IT |
FALSE |
| System configuration other |
FALSE |
| System configuration TN |
FALSE |
| System configuration TN-C |
FALSE |
| System configuration TN-C-S |
FALSE |
| System configuration TN-S |
FALSE |
| System configuration TT |
FALSE |
| Voltage protection level L-N |
1.4kV |
| Voltage protection level N-PE |
1.5kV |
| Voltage Rating |
230V |
| Width |
71.5mm |
| With remote signalling contact |
TRUE |
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