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ESP KT & KE Series - Technical specification
Electrical specification ESP KT1 ESP KT1/PTC ESP KT2 ESP K10T1 ESP K10T1/PTC ESP K10T2
ABB order code 7TCA085400R0135 7TCA085400R0034 7TCA085400R0136 7TCA085400R0130 7TCA085400R0131 7TCA085400R0133
Maximum working – line to line 296 V 296 V 5 V 296 V 296 V 5 V
voltage Uc(1) – line to earth 296 V 296 V 58 V 296 V 296 V 58 V
Current rating (signal) 300 mA 145 mA 300 mA 300 mA 145 mA 300 mA
In-line resistance (per line ±10%) 4.4 Ω
Bandwidth (-3 dB 50 Ω system) 20 MHz 20 MHz 20 MHz 20 MHz 19 MHz 19 MHz
Transient specification ESP KT1 ESP KT1/PTC ESP KT2 ESP K10T1 ESP K10T1/PTC ESP K10T2
Let-through voltage (all conductors) (2) Up
C2 test 4 kV 1.2/50 μs, – line to line 395 V 395 V 28 V 395 V 395 V 28 V
2 kA 8/20 μs to
BS EN/EN/IEC 61643-21 – line to earth 395 V 395 V 88 V 395 V 395 V 88 V
C1 test 1 kV, 1.2/50 μs, – line to line 390 V 390 V 23 V 390 V 390 V 23 V
0.5 kA 8/20 μs to
BS EN/EN/IEC 61643-21 – line to earth 390 V 390 V 63 V 390 V 390 V 63 V
B2 test 4 kV 10/700 μs to – line to line 298 V 298 V 26 V 298 V 298 V 26 V
BS EN/EN/IEC 61643-21 – line to earth 298 V 298 V 65 V 298 V 298 V 65 V
5 kV, 10/700 μs (3) – line to line 300 V 300 V 27 V 300 V 27 V 27 V
– line to earth 300 V 300 V 80 V 300 V 80 V 80 V
Maximum surge current(4)
D1 test 10/350 μs to – line to line 1 kA
BS EN/EN/IEC 61643-21: – line to earth 2 kA
8/20 μs to ITU-T K.45:2003, – line to line 5 kA
IEEE C62.41.2:2002: – line to earth 10 kA
Power Faults specification ESP KT1 ESP KT1/PTC ESP KT2 ESP K10T1 ESP K10T1/PTC ESP K10T2
Power/Line Cross and Power Induction - tests to: ITU-T (formerly CCITT) K.20, K.21 and K.45, Telcordia GR-1089-CORE, Issue 2:2002, UL 60950/IEC 950
Power/line cross – 110/230 Vac – – 110/230 Vac –
(15 min) (15 min)
Power induction – 600 V, 1 A – – 600 V, 1 A –
(0.2 sec) (0.2 sec)
Mechanical specification ESP KT1, ESP KT2, ESP KT1/PTC ESP K10T1, ESP K10T2, ESP K10T1/PTC ESP KE10
Temperature range -40 to +80 ºC –
Connection type To LSA-PLUS disconnection modules (BT part number 237A) –
Earth connection Via ESP KE10 earth bar Via integral earth clip/external –
M4 bush
Material FR Polymer UL-94 V-0 Stainless Steel
Weight: – Unit 0.01 kg 0.10 kg 0.01 kg
– Packaged 0.12 kg (per 10) 0.12 kg 0.10 kg (per 10)
Dimensions See diagram below
(1) Maximum working voltage (DC or AC peak) at 10 μA for
ESP KT1, ESP KT1/PTC, ESP K10T1, ESP K10T1/PTC and at
5 μA for ESP KT2 and ESP K10T2
(2) 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
(3) 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)
(4) The installation and connections external to the protector
may limit the capability of the protector
22 mm
Depth: 21 mm
110 mm
110 mm 22 mm 9.5 mm
59 mm
40 mm
20 mm
40 mm
59 mm
Telecoms & computer line protection
ESP KT & KE Series