2-pair Data surge protector unit

B280-24D3
Part Number 72773
B280-24D3
  • 2-pair surge protection unit
  • 24 V
  • 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
 LS, 4-20 mA
Nominal line voltage
 Un 24 V
Max. DC operating voltage
 Uc 28 Vdc
Max. frequency
 f max. > 3 MHz
Insertion loss
 < 1 dB
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 40 V
Protection level
@ In (8/20 µs)
 Up L/PE 20 V
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)
 S280-24D3
Dimensions
 See diagram
Weight
 0.122 kg
Standards compliance
 IEC 61643-21 / EN 61643-21 / UL497A
Certification
 UL 497B