Siemens Dig.Industr. Combined Surge Arrester 5SD7444-8KK11

Manufacturer: Siemens Dig.Industr.
Description: Combined surge arrester Type 1 + 2, UC 300V
Type: 5SD7444-8KK11
Number of conductors (excluding ground): 4
Nominal surge current (8/20): 50 kA
Maximum surge current (8/20): 50 kA
Nominal voltage AC: 230 V
Maximum continuous voltage AC: 300 V
Protection level: 1.5 kV
Protection level L-N: 1.5 kV
Protection level N-PE: 1.5 kV
Short-circuit withstand strength (Isccr): 25 kA
Integrated short-circuit protection: no
Integrated pre-fuse: no
Size: other
Maximum conductor cross-section rigid (single/multistranded): 35 mm²
Maximum conductor cross-section flexible (fine-stranded): 25 mm²
With remote signaling contact: yes
Device signaling: optical
Test class Type 2: yes
Protection class (IP): IP20

Additional details: Combined surge arrester Type 1 + 2, requirement class B+C, UC 300V, Iimp=7.5 kA, 4-pole, 3+1 circuit for TN-S and TT systems, for 40 mm busbar system with remote display.