Siemens 5SD74448KK11 Surge arrester reliable protection 1pc

Siemens manufactures the 5SD74448KK11 surge arrester, designed to protect electrical systems from voltage spikes. This robust device is ideal for safeguarding residential and industrial electrical installations. Typical applications include preventing damage to electronic equipment and maintaining the reliability of electrical systems.

Type	Surge arrester
Category type 2	true
Construction size	N/A
Degree of protection (IP)	IP20
Integrated backup fuse	false
Integrated short-circuit protection	false
Integrated short-circuit protection selective to fuse gG	N/A
Leakage-current free	N/A
Max. conductor cross section flexible (fine-strand)	25mm²
Max. conductor cross section solid (solid, stranded)	35mm²
Max. continuous voltage AC	300V
Max. continuous voltage DC	N/A
Max. discharge surge current (8/20)	50kA
Max. overcurrent protection device, parallel connection (fuse)	N/A
Max. overcurrent protection device, series connection (fuse)	N/A
Max. PV-voltage	N/A
Mounting method	N/A
Nominal discharge surge current (8/20)	50kA
Nominal voltage AC	230V
Nominal voltage DC	N/A
Number of conductors (without earthing)	4
Short-circuit breaking capacity (Isccr)	25kA
Signalling at the device	N/A
System configuration DC	N/A
System configuration IT	N/A
System configuration other	N/A
System configuration TN	N/A
System configuration TN-C	N/A
System configuration TN-C-S	N/A
System configuration TN-S	N/A
System configuration TT	N/A
Voltage protection level	1.5kV
Voltage protection level L-N	1.5kV
Voltage protection level N-PE	1.5kV
With remote signalling contact	true