Mersen surge arrester type 2 STPT2-40K275V-4P

Manufacturer: Mersen
Designation: Surge arrester type 2 40kA Uc275V 4+0 TNS
Type: STPT2-40K275V-4P
Mains type DC: No
Mains type IT: No
Mains type TN: No
Mains type TN-C: No
Mains type TN-C-S: No
Mains type TN-S: Yes
Mains type TT: Yes
Mains type other: No
Number of conductors (without earth): 4
Rated leakage impulse current (8/20): 20 kA
Max. leakage impulse current (8/20): 40 kA
Max. leakage current (8/20): 40 kA
Nominal voltage AC: 400 V
Max. continuous voltage AC: 275 V
Protection level: 1.3 kV
Max. overcurrent protection device (fuse): 125 A
Short-circuit strength (Isccr): 25 kA
Integrated short-circuit protection: No
Integrated back-up fuse: No
Leakage current-free: No
Mounting type: Top-hat rail TH35
Size: 4 TE
Max. conductor cross-section rigid (one-piece): 4 TE
Max. conductor cross-section rigid (solid/multistranded): 35 mm²
Max. conductor cross-section flexible (fine-stranded): No
Max. conductor cross-section flexible (flexible): 25 mm²
With remote signalling contact: No
Signalling on the device: Optical
Test class type 2: Yes
Protection class (IP): IP20

Mersen surge arrester type 2 STPT2-40 is a series of type 2/class II devices for arresting voltage peaks, according to EN/IEC 61643-11. Suitable for the second level of protection in distribution boxes preceded by type 1 protective devices or for the first level of protection in commercial and other applications without risk of direct impact and without external lightning protection system.