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Home » NEWEST Products » New by Manufacturer » Bourns » Model 1840 DIN Rail Signal and Data Line Protector - Bourns
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Bourns Model 1840 DIN Rail Signal and Data Line Protectors

Bourns Model 1840 DIN Rail
Signal and Data Line Protectors

Bourns® 1840 Model Signal and Data Line Protectors are heavy-duty, multi-staged Surge Protection Devices (SPD) designed to protect sensitive electronic circuits and components from damaging surge voltages and currents. Features include low peak clamping voltage, ability to repeatedly protect against surge, convenient DIN-1 and DIN-3 rail mounting, and cable shields that may be either grounded or arc-protected to ground. The device's extremely fast response and low clamping voltages make the series well-suited for the protection of sensitive signal and data lines associated with computer, data communication, instrumentation, broadcasting and industrial controls. The devices may be used directly with EIA standard interfaces RS-232, RS-422, RS-423, RS-485 and with 4-20 mA and 50 mA instrumentation loops. The Model 1840 Model Signal and Data Line Protectors are fast, rugged and capable of protecting against fast rising voltage transients as well as the severe current surges associated with lightning discharges, in each case up to rated limits.

Features
  • Low peak clamping voltage even during severe current surges
  • Ability to repeatedly protect against surge currents in excess of 10,000 amperes
  • Convenient mounting and grounding to any flat surface or to DIN-1 (TS-32) or DIN-3 (TS-35) rail
  • Cable shields are passed through and may be either grounded or arc-protected to ground
  • Vibration-resistant screw-type clamp terminals
  • Flame-resistant epoxy-filled housing

Applications
  • Computers
  • Data communication
  • Instrumentation
  • Broadcasting
  • Industrial controls
Specifications
  • Surge Life
    • 100 Amps 10 x 1000 μsec: 300 operations min.
    • 100 Amps 10 x 1000 μsec: 300 operations min.
    • 500 Amps 10 x 1000 μsec: 50 operations min.
    • 1000 Amps 10 x 1000 μsec: 10 operations min.
    • 3kA, 6kV / 8 x 20 μsec Combination Wave: 100 operations min.
    • 10kA / 8 x 20 μsec: 10 operations min.
    • 20kA / 8 x 20 μsec: 5 operations min.
  • ESD @ 8kV: 10 operations min.
  • Shield ARC Protection 6kV/3kA: 5 operations min.
  • Capacitance @ 1 MHz: L/G: 45pF, L/L: 35pF
  • Series Resistance: 12Ω typical
  • Maximum Load Continuous Current: 220mA
  • DC Leakage Current at Rated L/G Voltage: <10μA
  • Blocking Current: 300mA; typical 450mA
  • Signal/Data Attenuation: 3db @ 30MHz with 50Ω termination
  • Operating Temperature: -40ºC to +60ºC
  • Response Time: < 1 μsec
  • Wire Size: 20AWG
Circuit Diagram
Circuit Diagram
 
Part NumberDescriptionVoltage RatingHeightData Sheet
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