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2-pair Telecom surge protector unit

B280-T
Part Number 72726
B280-T
  • 2-pair surge protection unit
  • For Telephone lines
  • Removable protection circuit
  • Wall mounting and screw connection
  • UL497 A&B

The B280 units are designed to protect terminals connected to telephone or data networks. The protection printed circuit is removable for easy and fast maintenance (S280). These compact boxes are designed for wall mouting and screw connection.


Network
RTC, ADSL, SDSL, SHDSL
Nominal line voltage
Un 150 V
Max. DC operating voltage
Uc 170 Vdc
Max. frequency
f max. > 10 MHz
Insertion loss
< 1 dB
Max. load current
@25°C
IL 300 mA
Max. discharge current
max. withstand @ 8/20 µs by pole
Imax 20 kA
Protection mode(s)
Common/Differential mode
Protection level
Following the test category C3 (IEC61643-21) - Line/Line
Up 220 V
Protection level
Following the test category C3 (IEC61643-21) - Line/PE
Up 20 V
Impulse current
2 x 10/350µs Test - D1 Category
Iimp 2.5 kA
Nominal discharge current
C2 Category
In 5 kA
Line resistance
< 4.7 Ohm
Technology
GDT+Clamping diode
SPD configuration
2 pairs
Connection to Network
By screw terminal: cross section 0.4-1.5mm²
Format
Wall mounting box
Mounting
Wall mounting by screws (not supplied)
Housing material
Thermoplastic UL94 V-0
Operating temperature
Tu -40/+85°C
Protection rating
IP20
Failsafe mode
Short-circuit - transmision cut-off - fault mode 2
Spare module(s)
S280-T
Dimensions
See diagram
Standards compliance
IEC 61643-21 / EN 61643-21 / UL497A
Certification
UL 497B