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ESP LA & LB Series - Technical specification
Electrical specification
ESP LA-5/25
ESP LA-25/25 ESP LA-9/9
ESP LB-9/9
ESP LA-15/15 ESP LB-15/15
ESP LB-25/25
ABB order code
7TCA085400R0139 7TCA085400R0138 7TCA085400R0140 7TCA085400R0143 7TCA085400R0137 7TCA085400R0141 7TCA085400R0142
Nominal voltage
(1)
23.1 V
23.1 V
23.1 V
5.8 V
15.3 V
6.4 V
5.8 V
Maximum working voltage
U
c (RMS/DC)
(2)
25.7 V
25.7 V
25.7 V
6.4 V
17.1 V
7.13 V
6.4 V
Capacitance
< 500 pF
< 500 pF
< 500 pF
< 2000 pF
< 50 pF
< 50 pF
< 2000 pF
Current rating
300 mA
In-line resistance
~ 0 Ω
Transient specification
ESP LA-5/25
ESP LA-25/25 ESP LA-9/9
ESP LB-9/9
ESP LA-15/15
ESP LB-15/15
ESP LB-25/25
Let-through voltage
(3)
U
p
C2 test 4 kV 1.2/50 μs, 2 kA 8/20 μs to
BS EN/EN/IEC 61643-21
–
–
–
12.5 V
31.5 V
16.0 V
12.5 V
B2 test 1 kV 10/700 μs to BS EN/EN/IEC 61643-21
36.5 V
36.5 V
36.5 V
10.0 V
27.5 V
14.0 V
10.0 V
5 kV, 10/700 μs
(4)
37.5 V
37.5 V
37.5 V
10.5 V
28.5 V
14.6 V
10.5 V
Protection provided
Pins 1, 2, 3, 7 Pins 1-25 to Pins 1-9 to
Pins 1-9 to
Pins 1-15 to Pins 1-15 to Pins 1-25 to
and 20 to
earth/shell
(5)
earth/shell
earth/shell
earth and each earth and each earth/shell
(5)
earth/shell
(5)
other
other
Maximum surge current
8/20 μs to ITU-T K.45:2003, IEEE C62.41.2:2002
200 A
200 A
200 A
300 A
350 A
700 A
300 A
Mechanical specification
ESP LA-5/25
ESP LA-25/25 ESP LA-9/9
ESP LB-9/9
ESP LA-15/15 ESP LB-15/15
ESP LB-25/25
Temperature range
-40 to +80 ºC
Connection type
DB-25 m-f
DB-25 m-f
DB-9 m-f
DB-9 m-f
DB-15 m-f
DB-15 m-f
DB-25 m-f
Earth connection
Shell or 150 mm earth lead (supplied)
Case Material
FR Polymer UL-94 V-0
Weight: – Unit
50 g
50 g
40 g
40 g
50 g
50 g
50 g
– Packaged
70 g
70 g
50 g
50 g
60 g
60 g
70 g
Dimensions
See diagram below
(1)
Nominal voltage (RMS/DC or AC peak) measured at 5 μA
(ESP LA-5/25, ESP LA-9/9, ESP LA-25/25, ESP LA-15/15),
0.5 mA (ESP LB-15/15) and 1 mA (ESP LB-9/9, ESP LB-25/25)
(2)
Maximum working voltage (RMS/DC or AC peak) measured at
1 mA leakage (ESP LA-5/25, ESP LA-9/9, ESP LA-25/25,
ESP LA-15/15) and 10 mA (ESP LB-15/15, ESP LB-9/9 and
ESP LB-25/25)
(3)
The maximum transient voltage let-through of the protector
throughout the test (±10%). 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)
Pin 1 connected to earth/shell
54 mm
41 mm
32 mm
56 mm
Depth (all units): 18 mm
ESP LA-5/25
ESP LA-25/25
ESP LB-25/25
ESP LA-9/9
ESP LB-9/9
ESP LA-15/15
ESP LB-15/15
57 mm
68 mm
Telecoms & computer line protection
ESP LA & LB Series