Page 568 - Din prodcuts 2020

5/124 ELECTRICAL INSTALL ATION SOLUTIONS FOR BUILDINGS 2CHC 420 001 C0201

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Protection and safety
Telecoms & computer line protection
OVR TN/RJ11 & ISDN/RJ45 Series

5
Combined Category D, C, B tested protector (to BS EN 61643) suitable to
protect telephony equipment plugged into a Modem (RJ11) or ISDN (RJ45)
socket. 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 • Supplied in a sturdy ABS housing ready for flat mounting,
IEC/BS EN 62305) between all lines - Full Mode protection or vertically via TS35 ‘Top Hat’ DIN rail
• Full Mode design capable of handling partial lightning • OVR TN/RJ11-2/6, OVR TN/RJ11-4/6 and
currents as well as allowing continual operation of OVR TN/RJ11-6/6 are suitable for telecommunication
protected equipment applications in accordance with Telcordia and ANSI
• Repeated protection in lightning intense environments Standards (see Application Note OVR AN005)
• Substantial earth connection to enable effective earthing

Application
• For PSTN (e.g. POTS, dial-up, lease line, T1/E1, *DSL and • For S/T interface ISDN lines with RJ45 connections protect
Broadband) use TN/RJ11 the middle 4 (of 8) conductors (paired 3&6, 4&5) with OVR
• OVR TN/RJ11… are suitable for use on telephone lines with ISDN/RJ45-4/8, or all 8 (outside pairs 1&2, 7&8) with OVR
a maximum (or ringing) voltage of up to 296 Volts ISDN/RJ45-8/8
• For telephone lines with RJ11 connections protect the
middle 2 (of 6) conductors with OVR TN/RJ11-2/6, the For further information on RJ45 ISDN applications, see sep-
middle 4 (of 6) with OVR TN/RJ11-4/6 or all 6 with arate Application Note OVR AN002 and for global telephony
OVR TN/RJ11-6/6 applications, see separate Application Note
• For S/T interface ISDN lines, use OVR ISDN/RJ45-4/8 and OVR AN005 (contact us for a copy).
OVR ISDN/RJ45-8/8

Installation
Connect in series with the telephone or ISDN line. These Accessories
units are usually installed close to the equipment being OVR CAT5e/UTP-1
protected and within a short distance of a good electrical 1 metre cable with RJ45 connections
earth.

Plug-in series connection for Plug-in series connection for
OVR TN/RJ11-2/6, 4/6 & 6/6 OVR ISDN/RJ45-4/8 & 8/8

DIRTY CLEAN DIRTY CLEAN
ELECTRONIC SYSTEMS PROTECTION ELECTRONIC SYSTEMS PROTECTION
Plug-in Lightning Barrier Plug-in Lightning Barrier
Wilford Road, Wilford Road,
Nottingham, Nottingham,
NG2 1EB, UK NG2 1EB, UK
To From To From
phone equipment ISDN equipment
socket Earth line Earth

NOTE: For non-ISDN wire-in applications the high performance OVR TN, OVR SLTN or OVR TNQ can be used.
Protect PBX telephone exchanges and other equipment with LSA-PLUS connections using OVR KT series.