Furse Total Solution to Earthing & Lightning Protection

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Electrical specification ESP SL15X ESP SL30X
Nominal voltage 1 15 V 30 V
Maximum working voltage Uc2 16.7 V 36.7 V
Current rating (signal) 750 mA
In-line resistance (per line ±10%) 1.0 Ω
Bandwidth (-3 dB 50 Ω system) 45 MHz 45 MHz
Intrinsically Safe specification ESP SL15X ESP SL30X
Maximum voltage Ui 30 V
Maximum power Pi
- per -40 ºC < Ta < 40 ºC
- per -40 ºC < Ta < 60 ºC
- per -40 ºC < Ta < 80 ºC
1.3 W
1.2 W
1.0 W
Capacitance Ci 0 µF
Inductance Li 0 µH
Certificate number IECEx SIR 10.0030X, Sira 10ATEX2063X
Classification II 2 (1) G, Ex ia (ia Ga) IIC T4 Gb
Transient specification ESP SL15X ESP SL30X
Let-through voltage (all conductors)3 Up
C2 test 4 kV 1.2/50 µs, 2 kA 8/20 µs to
BS EN/EN/IEC 61643-21
38.4 V 63.0 V
C1 test 1 kV, 1.2/50 µs, 0.5 kA 8/20 µs to
BS EN/EN/IEC 61643-21
29.4 V 51.3 V
B2 test 4 kV 10/700 µs to BS EN/EN/IEC 61643-21 26.8 V 45.4 V
5 kV, 10/700 µs4 27.5 V 46.3 V
Maximum surge current
D1 test 10/350 µs to - per signal wire
BS EN/EN/IEC 61643-21 - per pair
1.25 kA
2.5 kA
8/20 µs to ITU-T K.45:2003, - per signal wire
IEEE C62.41.2:2002 - per pair
10 kA
20 kA
Mechanical specification ESP SL15X ESP SL30X
Temperature range -40 to +80 ºC
Connection type Screw terminal
Conductor size (stranded) 4 mm2
Earth connection Via DIN rail or 4 mm2 earth terminal
Case material FR polycarbonate UL94 V-0
Weight - unit 0.08 kg
Weight - packaged (per 10) 0.85 kg
Dimensions
Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email: • Web:
Technical specification
ESP SL X Series NEW
TSC-0912 - 09.10.12
Use the standard ESP SL ‘Slim Line’ Series for non-hazardous areas. The ESP SL Series is also available for protection of 3-wire, RS 485, RTD &
telecommunication applications (ESP SL/3W, ESP SL RS485, ESP SL RTD & ESP SL TN).
7 mm
104.6 mm
106.5 mm
2 S 1 2 SE 1
1 Nominal voltage (DC or AC peak) measured at < 10 µA.
2 Maximum working voltage (DC or AC peak) measured at
< 1 mA leakage.
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).