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Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email:
enquiry@furse.com• Web:
www.furse.comESP D/BX Series
TSC-0912 - 09.10.12
Very low let-through voltage (enhanced protection to BS EN 62305)
between all lines - Full Mode protection
Full mode design capable of handling partial lightning currents as well
as allowing continual operation of protected equipment
Repeated protection in lightning intense environments
Low in-line resistance minimises unnecessary reductions in
signal strength
Ready-boxed to IP66 and supplied ready for flat mounting
Available with screw terminals or with IDC terminals (by adding /I suffix
to part number)
Colour coded terminals for quick and easy installation check -
grey for the dirty (line) end and green for clean
Screen terminal enables easy connection of cable screen to earth
Substantial earth stud to enable effective earthing
ESP TN/BX and ESP TN/2BX are suitable for telecommunication
applications in accordance with Telcordia and ANSI Standards (see
Application Note AN005
)
Supplied as standard with screw terminals - for IDC terminals order part
code plus /I (e.g. ESP TN/BX/I)
ESP TN/BX has Network Rail Approval PA05/02877. NRS PADS reference
087/037286
Features and benefits
Combined Category D, C, B tested protector (to BS EN 61643) based
on the ESP D Series and ESP TN but ready-boxed to IP66 for use in
damp or dirty environments. Suitable for most twisted pair
signalling applications. Available for working voltages of up to 6,
15, 30, 50 and 110 Volts. ESP TN suitable for Broadband, POTS,
dial-up, T1/E1, lease line and *DSL telephone applications. For use
at boundaries up to LPZ
0
A
to protect against flashover (typically
the service entrance location) through to LPZ 3 to protect sensitive
electronic equipment.
Connect in series with the data
communication, signal or
telephone line either near where it
enters/leaves the building or close
to the equipment being protected.
Either way, it must be very close to
the system’s earth star point.
Installation
Use these ready-boxed protectors
on twisted pair lines in dirty or
damp environments.
For two wire lines, use /BX
versions. For four wire lines,
use /2BX versions.
Application
A
LINE
CLEAN
LIGHTNINGBARRIER
ESP 06D/BX
EARTH
STUD
A
B
B
For installation in the equipment panel, protectors which are not boxed may be more
suitable. If your system requires a protector with a very low resistance, higher current or
higher bandwidth use the ESP E or H Series. Unboxed protectors for 3-wire RTD systems are
available - as are plug-in protectors for telephone lines and compact Slim Line protectors.
Security alarm panel with ESP TN/BX
(bottom) providing protection from
transient overvoltages on the dial-up
telephone line. Note how the ESP TN/BX is
earthed via a bond to the ESP 240-16A/BX
(top) installed on the mains power supply to
the panel
Install in series (in-line)
DIRTY
CLEAN
From line
To
equipment
Earth
ESP 30D/2BX with lid removed to show
internal connections. Note the colour coded,
grey and green, terminals