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

OVR TN/RJ11 & ISDN/RJ45 Series - Technical specification
Electrical specification OVR TN/ OVR TN/ OVR TN/ OVR ISDN/ OVR ISDN/
RJ11-2/6 RJ11-4/6 RJ11-6/6 RJ45-4/8 RJ45-8/8 5
ABB order code 7TCA085400R0337 7TCA085400R0338 7TCA085400R0339 7TCA085460R0359 7TCA085460R0360
Nominal voltage 296 V 296 V 296 V 5 V 5 V/58 V (2)
Maximum working voltage Uc (1) 296 V 296 V 296 V 58 V 58 V
Current rating (signal) 300 mA
In-line resistance (per line ±10%) 4.4 Ω
Bandwidth (-3 dB 50 Ω system) 20 MHz 20 MHz 20 MHz 19 MHz 19 MHz
Transient specification OVR TN/ OVR TN/ OVR TN/ OVR ISDN/ OVR ISDN/
RJ11-2/6 RJ11-4/6 RJ11-6/6 RJ45-4/8 RJ45-8/8
Let-through voltage (all conductors) Up
(3)
C2 test 4 kV 1.2/50 μs, – line to line 395 V 395 V 395 V 28 V 28 V/88 V (5)
2 kA 8/20 μs to – line to earth 395 V 395 V 395 V 88 V 88 V
BS EN/EN/IEC 61643-21
C1 test 1 kV, 1.2/50 μs, – line to line 390 V 390 V 390 V 23 V 23 V/63 V (5)
0.5 kA 8/20 μs to – line to earth 390 V 390 V 390 V 63 V 63 V
BS EN/EN/IEC 61643-21
B2 test 4 kV 10/700 μs – line to line 298 V 298 V 298 V 26 V 26 V/65 V (5)
to BS EN/EN/IEC – line to earth 298 V 298 V 298 V 65 V 65 V
61643-21
5 kV, 10/700 μs (4) – line to line 300 V 300 V 300 V 27 V 27 V/80 V (5)
– line to earth 300 V 300 V 300 V 80 V 80 V
Maximum surge current (6)
D1 test 10/350 μs to 1 kA
BS EN/EN/IEC 61643-21
8/20 μs to ITU-T K.45:2003, 10 kA
IEEE C62.41.2:2002:
Mechanical specification OVR TN/ OVR TN/ OVR TN/ OVR ISDN/ OVR ISDN/
RJ11-2/6 RJ11-4/6 RJ11-6/6 RJ45-4/8 RJ45-8/8
Temperature range -40 to +80 °C
Connection type RJ11 plug RJ11 plug RJ11 plug RJ45 plug RJ45 plug
and socket and socket and socket and socket and socket
Earth connection M4/DIN rail
Case Material FR Polymer UL-94 V-0
Weight – Unit 0.15 kg
– Packaged 0.2 kg
Dimensions See diagram below

106 mm 106 mm

OVR ISDN/RJ45-4/8, 8/8
OVR ISDN/RJ45-4/8, 8/8 54 mm 54 mm60 mm 60 mm
cable length: 0.5 m
cable length: 0.5 m
49 mm 49 mm
(1) Maximum working voltage (DC or AC peak)
OVR TN/RJ11-2/6, 4/6, 6/6
measured at < 10 μA leakage for OVR TN/RJ11 OVR TN/RJ11-2/6, 4/6, 6/6
cable length: 1 m
cable length: 1 m
products and < 5 μA for OVR ISDN/RJ45 products Depth: 24 mm
Depth: 24 mm
(2) Maximum working voltage is 5 V for pairs Fixing centres 49 x 54 mm, M3 clearance
Fixing centres 49 x 54 mm, M3 clearance
3/6 & 4/5, and 58 V for pairs 1/2 & 7/8
(3) The maximum transient voltage let-through of the
protector throughout the test (±10%), line to line &
line to earth, both polarities. Response time < 10 ns
(4) Test to IEC 61000-4-5:2006, ITU-T (formerly
CCITT) K.20, K.21 and K.45,Telcordia GR-
1089-CORE, Issue 2:2002, ANSI TIA/EIA/
IS-968-A:2002 (formerly FCC Part 68)
(5) The first let-through voltage value is for pairs
3/4 & 5/6, and the second value is for pairs 1/2 & 7/8
(6) The installation and connectors external to the
protector may limit the capability of the protector