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ESP SL Series

The ESP SL Series is a combined Category D, C, B tested protector (to BS EN 61643) suitable for twisted pair signalling applications which require either a lower in-line resistance, an increased current and/or higher bandwidth. Also suitable for DC power applications less than 0.75 Amps.

Available for working voltages of up to 6, 15, 30, 50, 110 and 180 Volts. For use at boundaries up to LPZ 0 to protect against flashover (typically the service entrance location) through to LPZ 3 to protect sensitive electronic equipment.

Features & benefits

  • Very low let-through voltage (enhanced protection to IEC/BS EN 62305) between all lines
  • Full Mode design capable of handling partial lightning currents as well as allowing continual operation of protected equipment
  • Repeated protection in lightning intense environments
  • Ultra slim 7 mm width ideal for compact protection of large numbers of lines (e.g. process control installations)
  • Optional LED status indication versions available for low current DC power applications - add L suffix to part number - e.g. ESP SL30L
  • Two stage removable protection module with simple quick release mechanism allowing partial removal for easy line commissioning and maintenance as well as full removal for protection replacement
  • Strong, flame retardant, polycarbonate housing
  • High (750 mA) maximum running current
  • High bandwidth enables higher frequency (high traffic or bit rate) data communications
  • Screen terminal enables easy connection of cable screen to earth
  • Suitable for earthed or isolated screen systems - add /I suffix to part number for versions that require isolated screens - e.g. ESP SL30/I
  • Built-in innovative DIN rail foot with locking feature for simple positioning and clip-on mounting to top hat DIN rails
  • 4 mm² terminals allow for larger cross section wiring, stranded wires terminated with ferrules or fitting two wires into a single terminal
  • Convenient earthing through DIN foot and/or earth terminal
  • Very low (1 Ω) in-line resistance (for products from 6V to 110V) allows resistance critical applications (e.g. alarm loops) to be protected
  • ESP SL06-SL180 have UL497b approval under file E240341 (ESP SLTN not included)