Surge protection device for power supply systems MERSEN
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General information
Ordercode YESSS
4306-7497 
Product code
83010100
Product group
Surge protection device for power supply systems
Brand
MERSEN
Type
STMT1-50K275V-1P
surge arrester type 1 50kA Uc275V L+N 1-pole 2 module
surge arrester type 1 50kA Uc275V L+N 1-pole 2 module monobloc
Product description
STM T1 50 is the most robust series of single pole Type 1/Class I lightning current arresters, able to discharge energy (current) from a direct lightning strike (10/350µs) on an external lightning protection system (LPS) or overhead supplies, in accordance with EN/IEC 61643-11. Suitable as the first step of protection in incoming power supply panels and areas with high exposure to lightning strikes, fitted with an external lightning protection system.
Product specifications
System configuration DC
Yes
System configuration IT
No
System configuration TN
No
Nominal discharge surge current (8/20)
5 kA
System configuration TN-C
No
Max. continuous voltage AC
0 V
System configuration TN-C-S
No
System configuration TN-S
No
Nominal voltage DC
12 V
System configuration TT
No
Max. continuous voltage DC
15 V
System configuration other
No
Voltage protection level
0.4 kV
Mounting method
DIN rail (top hat rail) 35 mm
Construction size
1 modular spacing
Max. discharge surge current (8/20)
10 kA
Max. conductor cross section solid (solid, stranded)
6 mm²
With remote signalling contact
No
Max. conductor cross section flexible (fine-strand)
6 mm²
Signalling at the device
Optical
Category type 2
No
Degree of protection (IP)
IP20
Integrated backup fuse
No
Integrated short-circuit protection
No
Leakage-current free
No
Product information