Surge protection device for power supply systems MERSEN
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General information
Ordercode YESSS
6720-7111 
Product code
83010108
Product group
Surge protection device for power supply systems
Brand
MERSEN
Type
STMT1-50K275V-3P
surge arrester type 1 50kA Uc275V 3+0 3-pole 6 module
surge arrester type 1 50kA Uc275V 3+0 3-pole 6 module monobloc
Product description
This extremely robust surge arrester is able to divert the energy (the current) of a direct lightning strike (10/350 ?s) into an external lightning protection system or an overhead line, in accordance with EN / IEC 61643. It is suitable for the first protection level in the main switchboard and For areas with a high risk of lightning strikes that are equipped with an external lightning protection system.
Product specifications
System configuration DC
No
System configuration IT
No
System configuration TN
No
Nominal discharge surge current (8/20)
50 kA
System configuration TN-C
Yes
Max. continuous voltage AC
275 V
System configuration TN-C-S
No
Nominal voltage AC
400 V
System configuration TN-S
No
System configuration TT
No
System configuration other
No
Voltage protection level
2 kV
Number of conductors (without earthing)
3
Voltage protection level L-N
2 kV
Mounting method
DIN rail (top hat rail) 35 mm
Short-circuit breaking capacity (Isccr)
50 kA
Construction size
6 modular spacing
Max. conductor cross section solid (solid, stranded)
35 mm²
With remote signalling contact
No
Max. conductor cross section flexible (fine-strand)
25 mm²
Signalling at the device
None
Category type 2
No
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
No
Product information