1-pair Data surge protector unit
B180-48D3
Part Number: 510402
  • Compact 1-pair surge protection unit
  • 48 V
  • Removable protection circuit
  • Wall mounting and screw connection
  • UL497 A&B

The B180 units are designed to protect terminals connected to telephone or data networks. The protection printed circuit is removable for easy and fast maintenance (S180). These compact boxes are designed for wall mouting and screw connection.


Network 48 V line
Nominal line voltage Un 48 V
Max. DC operating voltage Uc 53 V
Max. frequency f max. > 3 MHz
Insertion loss < 1 dB
Max. load current IL 300 mA
Max. discharge current Imax 20 kA
Protection mode(s) Common/Differential mode
Protection level Up 70 V
Protection level Up 20 V
Impulse current Iimp 2.5 kA
Nominal discharge current In 5 kA
Line resistance < 4.7 Ohm
Technology GDT+Clamping diode
SPD configuration 1 pair
Connection to Network screw terminal - mini/maxi cross section : 0.4/1.5 mm²
Format wall mounting box
Mounting wall (screws non included)
Housing material Thermoplastic UL94-V0
Operating temperature Tu -40/+85°C
Protection rating IP20
Failsafe mode Short-circuit - transmision cut-off - fault mode 2
Spare module(s) S180-48D3
Dimensions See diagram
Weight 0.043 kg
Standards compliance IEC 61643-21 / EN 61643-21 / UL497A
Certification UL listed