Suitable for use on
telephone lines with a maximum (or ringing) voltage of up to 190 volts. For telephone lines
with a British style, jack plug and socket, connection use ESP TN/JP.
For telephone lines
with RJ11 connections protect the middle 2 (of 6) conductors with ESP
TN/RJ11-2/6, the middle 4 (of 6) with ESP TN/RJ11-4/6 or all 6 with
ESP TN/RJ11-6/6.
For wire-in applications the high performance ESP
TN or ready-boxed derivative ESP TN/BX or
ESP TN/2BX, can be used. To protect PBX telephone exchanges and
other equipment with LSA-PLUS connections click
here.
Application
Use these to protect equipment plugged into a telephone or ISDN socket:
computers and computer
modems faxes, phones and answer
machines dial-up fire/burglar
alarms telemetry equipment.
ESP TN/JP
Our Price - GBP 83.51
This is our special discounted online price.
Features and benefits
Controls transient overvoltages
to a low level to ensure maximum protection for your equipment.
Provides repeated protection
in lightning intense environments.
ESP TN/JP and ESP TN/RJ11-6/6
give protection between all six conductors, so whichever wires your system
communicates through you can be sure your equipment is fully protected.
ESP ISDN/RJ45-8/8 gives
protection between ll 8 conductors, fully protecting attached equipment
no matter which wires the system uses.
Correctly applied, ESP
TN/RJ11-2/6, ESP TN/RJ11-4/6 and ESP ISDN/RJ45-4/8 protect all signalling
conductors.
Supplied ready for flat
mounting.
Sturdy ABS housing.
Simple installation.
Substantial earth stud
to enable effective earthing.
Straightforward and comprehensive
installation instructions with every unit.
UK Oftel Approval NS/G/1235/W/100025
5 year warranty.
Installation
Connect in series with the telephone line or ISDN
line. These units are usually installed close to the equipment being
protected and within a short distance of a good electrical earth.
Electrical specification
ESP TN/JP
ESP TN/RJ11-2/6
ESP TN/RJ11-4/6
ESP TN/RJ11-6/6
ESP ISDN/RJ45-4/8
ESP ISDN/RJ45-8/8
Max working voltage¹
-Line to line
-Line to earth
190V
190V
190V
190V
190V
190V
190V
190V
5V
58V
5V/58V²
58V²
Current rating (signal)
300mA
300mA
300mA
300mA
300mA
300mA
In-line resistance
(per line ± 10%)
4.4ohm
4.4ohm
4.4ohm
4.4ohm
4.4ohm
4.4ohm
Bandwidth
(-3dB 50ohm system)
>50MHz
>50MHz
>50MHz
>50MHz
>50MHz
>50MHz
1 Maximum working voltage (DC or AC peak) measured at <95µA
leakage. Post transient recovery voltage >80V.
Transient specification
ESP TN/JP
ESP TN/RJ11-2/6
ESP TN/RJ11-4/6
ESP TN/RJ11-6/6
ESP ISDN/RJ45-4/8
ESP ISDN/RJ45-8/8
Let through voltage (all conductors)¹
5kV,10/700µs test to:
BS 6651:1999 Appendix C, Cat C-High
ITU (formerly CCITT) IX K17
-Line to line
-Earth to earth
200V
200V
200V
200V
200V
200V
200V
200V
27V
80V
27V/80V²
80V
Maximum surge current
10kA
10kA
10kA
10kA
10kA
10kA
1 The maximum transient voltage let-through the protector
throughout the test (+/-10%), line to line & line to earth. Response time
<10ns.
2 Tested with 8/20µs waveshape to ITU (formely CCITT), BS 6651:1999
Appendix C.The connectors may limit the capability of the protector.
Mechanical specification
ESP TN/JP
ESP TN/RJ11-2/6
ESP TN/RJ11-4/6
ESP TN/RJ11-6/6
ESP ISDN/RJ45-4/8
ESP ISDN/RJ45-8/8
Temperature range
-25°C to +70°C
-25°C to +70°C
-25°C to +70°C
-25°C to +70°C
-25°C to +70°C
-25°C to +70°C
Connection type
Standard BT jack plug and socket (to BS 6312)
RJ11 plug and socket
RJ11 plug and socket
RJ11 plug and socket
RJ45 plug and socket
RJ45 plug and socket
Earth connection
M6 stud
M6 stud
M6 stud
M6 stud
M6 stud
M6 stud
Weight
-unit
-packaged
0.15kg
0.2kg
0.15kg
0.2kg
0.15kg
0.2kg
0.15kg
0.2kg
0.15kg
0.2kg
0.15kg
0.2kg
Dimensions
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Suitable for use on
telephone lines with a maximum (or ringing) voltage of up to 190 volts.
Controls transient overvoltages
to a low level to ensure maximum protection for your equipment. 
