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
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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
@ In (8/20 µs)
 Up L/L 220 V
Protection level
@ In (8/20 µs)
 Up L/PE 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
Weight
 0.123 kg
Standards compliance
 IEC 61643-21 / EN 61643-21 / UL497A
Certification
 UL 497B