Mersen surge arrester STPT2-40K275V-4PGM

Manufacturer: Mersen
Designation: Surge arrester type 2, 4-pole 40kA
Type: STPT2-40K275V-4PGM
Mains type DC: No
Mains type IT: No
Mains form TN: No
Mains form TN-C: No
Mains form TN-C-S: No
Mains form TN-S: Yes
Mains form TT: Yes
Mains form other: No
Number of conductors (without earth): 4
Rated leakage impulse current (8/20): 20 kA
Max. leakage impulse current (8/20): 20 kA
Max. leakage current (8/20): 40 kA
Nominal voltage AC: 400 V
Max. continuous voltage AC: 275 V
Protection level: 1.3 kV
Protection level L-N: 1.3 kV
Protection level N-PE: 1.5 kV
Max. overcurrent protection device (stub wiring - fuse): 125 A
Max. overcurrent protection device (V-wiring): 125 A
Overcurrent protection device (V-wiring - fuse): 125 A
Short-circuit strength (Isccr): 25 kA
Integrated short-circuit protection: No
Integrated back-up fuse: No
Leakage current-free: Yes
Mounting type: Top-hat rail TH35
Size: 4 TE
Max. conductor cross-section rigid (one-pole): 5 kV
Max. conductor cross-section rigid (solid/multistranded): 35 mm²
Max. conductor cross-section flexible (finely stranded): No
Max. conductor cross-section flexible (fine-stranded): 25 mm²
With remote signalling contact: Yes
Signalling on the device: Optical
Test class type 2: Yes
Protection class (IP): IP20

Mersen surge arrester STPT2-40K275V-4PGM is part of the STP T2 40 series of type 2/class II devices for the discharge of voltage peaks, according to EN/IEC 61643-11. It is suitable for the second level of protection in distribution boards preceded by type 1 protective devices or for the first level of protection in commercial and other applications without risk of direct strikes and without an external lightning protection system.