Surge protection device for power supply systems MERSEN
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General information
Ordercode YESSS
6720-7114 
Product code
83020195
Product group
Surge protection device for power supply systems
Brand
MERSEN
Type
STPT2-40K275V-4PG-N
surge arrester type 2 40kA Uc275V 3+1 TT 4-pole 4
surge arrester type 2 40kA Uc275V 3+1 TT 4-pole 4 module plugin
Product description
This combined arrester is suitable for the discharge of lightning currents and protection against voltage peaks, according to EN / IEC 61643. It can be used for the first protection level in the main switchboard and for areas that are outdoors and in which the systems are usually connected to an external one Lightning protection system.
Product specifications
System configuration DC
No
System configuration IT
No
System configuration TN
No
Nominal discharge surge current (8/20)
20 kA
System configuration TN-C
No
Max. continuous voltage AC
275 V
System configuration TN-C-S
No
Nominal voltage AC
400 V
System configuration TN-S
Yes
System configuration TT
Yes
System configuration other
No
Number of conductors (without earthing)
4
Voltage protection level L-N
1.3 kV
Mounting method
DIN rail (top hat rail) 35 mm
Voltage protection level N-PE
1.5 kV
Short-circuit breaking capacity (Isccr)
20 kA
Construction size
4 modular spacing
Max. discharge surge current (8/20)
40 kA
With remote signalling contact
No
Signalling at the device
Optical
Category type 2
Yes
Degree of protection (IP)
IP20
Integrated backup fuse
No
Max. overcurrent protection device, parallel connection (fuse)
125 A
Max. overcurrent protection device, series connection (fuse)
125 A
Integrated short-circuit protection
No
Leakage-current free
Yes
Product information