Two-Stage Surge Current Arrester for Signal Lines

Two-Stage Surge Current Arrester for Signal Lines

Nominal Voltage: 24V DC

Maximum Operating Voltage (AC/DC): 25V AC/36V DC

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Product Information:

Coarse and fine surge protection for 2 core signaling networks.

Features:

  • Screwless terminals
  • Coupling impedance (resistance)
  • Use on systems up to 24 volts

Benefits: Coarse and fine surge protection in differential mode (core-core) and common mode (core-PE).

Standards: EN 61643-11 (Surge Protection Devices).

Application: Install close to equipment for protection of communication interfaces.

More Information:

Where low voltage, data, and telecom lines enter and exit the building, they must also be included in the Lightning Protection System.

These include:

  • Electromagnetic shielding
  • Telephone lines
  • Data communication lines
  • Instrumentation, control, signalling lines
  • Coaxial lines for CCTV, TV, & antenna cables
  • Field-based electronic equipment also needs to be protected.

Electrical Specification:

Order number
KM-DM-048/1-RB
Connection (input - output)
screwless terminals - screwless terminals
Nominal voltageUn
24V DC
Maximum operating voltage (AC/DC)Uc
25V AC/36V DC
Nominal load currentIL
0.5A
C2 Nominal discharge current (8/20μs) per coreIn
5kA
C2 Nominal discharge current (8/20μs) cores-PEItotal
10kA
C2 Voltage protection level mode core-core at lnUp
50V
C2 Voltage protection level mode core-PE at lnUp
350V
C3 Voltage protection level mode core-core at 1kV/μsUp
45V
C3 Voltage protection level mode core-PE at 1kV/μsUp
500V
Response time core-core/coreta
1ns
Response time core-PEta
100ns
Serial resistance per coreR
1.6Ω
Threshold frequency core-coref
5MHz
Cross-section of connected conductors (solid) (min - max)
0.08mm² - 4mm²
Cross-section of connected conductors (stranded) (min - max)
0.08mm² - 2.5mm²
Degree of protection
IP20
Range of operating temperatures (min - max)
-40°C - +70°C
Mounting
DIN rail 35mm
According to standard
EN 61643-21+A1,A2:2013, IEC 61643-21+A1,A2:2012 / C2, C3
ETIM Class
EC 001625
Weight
35g (nett), 60g (gross)

Wiring Diagrams for Two-Stage Surge Current Arrester for Signal Lines: