Protector 21A (Pack of 10)

£9.98 ex VAT£11.98 inc VAT

Description

Protector 21A (Pack of 10)

This 3 pole over-voltage gas discharge tube (GDT) with failsafe is designed to fit into 5B type protection magazines and protect telephone circuits.

Features

  • Fits into standard 3 pole magazines (“protector mounting 5B”)
  • Manufactured to standard 21A, with a lower spark over-voltage than previous versions
  • Lower spark over-voltage offers circuits greater protection while still allowing plenty of headroom above standard telecoms voltage

Specifications

  • Totally non-radioactive over-voltage protection
  • Very high current handling capabilities
  • Designed to perform to ITU (formerly CCITT) K12
  • DC sparkover voltage: 150 – 250V
  • Minimum insulation resistance: 1000µΩ @ 100VDC
  • Maximum impulse sparkover voltage: 450V @ 1KV/ µS
  • Maximum capacitance: 1.5pF @ 1µHz bias Ø VDC line to ground
  • Minimum handover voltage: 100V (using ITU K12)

Additional information

Pack Size

Pack of 100