Coupling impedance (resistance), screwless
terminals.
- Coarse and fine surge protection for 2-core
signalling networks.
- Installation close to protected equipment.
- For protection of communication interfaces
and measuring lines of I&C, electronic security and fire detection systems,
etc. against impact of surge voltage.
- Coarse and fine surge protection in differential mode (core – core) and coarse protection in common mode (core – PE).
Specifications:
| Parameter name | Parameter value | |
| Type
  of SPD | C2,C3 | |
| Location
  of SPD | ST 2+3 | |
| Mounting | DIN rail 35 mm | |
| Nominal
  voltage | Un | 6 V DC | 
| Maximum
  operating voltage | Uc | 6.00 V AC | 
| Maximum
  operating voltage | Uc | 8.50 V DC | 
| Nominal
  load current | IL | 0.500 A | 
| Treshold
  frequency core-core | f | 1.00 MHz | 
| Serial
  resistance per core | R | 1.60 Ω | 
| D1
  impulse discharge current (10/350 µs) per core | Iimp | 0.50 kA | 
| D1
  total discharge current (10/350 µs) cores-PE | ITotal | 1.00 kA | 
| C2
  nominal discharge current (8/20 µs) per core | In | 5.00 kA | 
| C2
  total discharge current (8/20 µs) cores-PE | ITotal | 10.00 kA | 
| C2
  voltage protection level mode core-PE at In | Up | 350 V | 
| C2
  voltage protection level mode core-core at In | Up | 18 V | 
| C3
  voltage protection level mode core-PE at 1 kV/µs | Up | 500 V | 
| C3
  voltage protection level mode core-core at 1 kV/µs | Up | 12 V | 
| Response
  time core-core | ta | 1 ns | 
| Response
  time core-PE | ta | 100 ns | 
| Connection
  (input - output) | screwless terminals/screwless terminals | |
| Cross-section
  of connected conductors solid (min) | 0.08 mm2 | |
| Cross-section
  of connected conductors solid (max) | 4.00 mm2 | |
| Cross-section
  of connected conductors stranded (min) | 0.08 mm2 | |
| Cross-section
  of connected conductors stranded (max) | 2.50 mm2 | |
| Degree
  of protection | IP 20 | |
| Range
  of ambient temperatures (min/max) | -40 / 70 °C | |
| According
  to standard | EN 61643-21+A1,A2:2013, IEC
  61643-21+A1,A2:2012 | |
| ETIM
  Class | EC001625 | |
| Customs
  tariff number | 85363010 | |
| EAN | 8595090560616 | 
Dimensions:
Surge protection for 2-core floating signalling networks, 6 V DC
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