keyword 2 poles with lead wire, DC discharge start voltage 230V
Product Info Product name: U-4B (UL)
Item code: 11008111

Mounted between the neutral line and ground of the communication circuit board and power supply circuit of the 2-pole arrester (GDT) communication device, and used to protect the device from induced voltage and TOV (temporary overvoltage) induced in the line to do.

Main applications

  • various electronic devices and protection of communication lines
  • switch
  • PBX
  • telephone
  • FAX
  • AC power
  • Inverter

・ Small size and high current resistance
・ Low capacitance
・ Broadband compatible
・ Excellent heat and mechanical shock due to use of ceramic envelope
・ Excellent current resistance and temperature environment characteristics of repeated surge

Dimensions  (Unit: mm)
item conditions Performance
DC discharge start voltage 100 V / s 230 V ± 15%
Impulse discharge start voltage 100 V / μs 600 V or less
Impulse discharge start voltage 10 kV / μs 900 V or less
Insulation resistance DC 100 V 10000 MΩ or more
Capacitance 1 MHz 1.0 pF or less
DC holdover voltage Voltage 135 V, current 200 mA 150 ms or less
Alternating current Voltage 100 V, current 80 A, 50 Hz 1/2 cycle or less
Impulse life 10/1000 μs, 500 A 300 times
Impulse current capacity 8/20 μs, 5 kA 10 times
Impulse current capacity 8/20 μs, 10 kA Once
AC current tolerance 10 A, 1 s, 50 Hz 5 times
AC current tolerance 65 A, 9 cycle, 50 Hz Once
mass - 1.5 g
Notes on use

When using this product for AC power, be sure to use it together with a varistor.

If the arrester is used alone, a follow current may occur.

We also have AV series (2 poles) and AV3P series (3 poles) with arresters and varistors integrated.