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
C3 (10/1000μs), 300 applications@10 A, X-X (Line/Line)
 Up

220 V
Protection level
C3 (10/1000μs), 300 applications@10 A, X-C (Line/Earth)
 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+TVS 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 / UL497B
Certification

UL 497B