Furse, Wilford Road, Nottingham, NG2 1EB Tel: +44 (0)115 964 3700 Email: enquiry@furse.com Web: www.furse.com
ESP RS485, RS485Q & SL RS485 Series NEW
Very low let-through voltage (enhanced protection to BS EN 62305)
between all lines - Full Mode protection
Full mode design capable of handling partial lightning currents as well
as allowing continual operation of protected equipment
Repeated protection in lightning intense environments
45 MHz bandwidth greatly exceeds 12 Mbps maximum speeds
Low in-line resistance minimises reductions in signal strength
Suitable for earthed or isolated screen systems
Built-in DIN rail foot for simple mounting to top hat DIN rails
Convenient earthing through DIN foot and/or earth terminal
ESP RS485 can be flat mounted on base or side
ESP RS485 and ESP RS485Q have colour coded terminals for quick and
easy installation check
ESP SL RS485 has ultra slim 7 mm width ideal for compact protection of
large numbers of lines (e.g. process control installations)
ESP SL RS485 includes two stage removable protection module with
simple quick release mechanism allowing partial removal for easy line
commissioning and maintenance as well as full removal for protection
replacement
ESP SL RS485 includes optional LED status indication - add L suffix to
part number - i.e. ESP SL RS485L
Features and benefits
Combined Category D, C, B tested protector (to BS EN 61643)
specifically designed for RS 485 and Fieldbus applications, such as
Profibus DP. For use at boundaries up to LPZ 0A(ESP RS485 &
ESP RS485Q), or LPZ 0B(ESP SL RS485) protect against flashover
(typically the service entrance location) through to LPZ 3. Available
as standard ESP RS485 format, or compact ESP RS485Q and Slim Line
ESP SL RS485 versions for installations where a high number of lines
require protection.
Replacement module for
ESP SL RS485
ESP SLRS485/M
Standard module replacement
ESP SLRS485/B
Base replacement
Combined Mounting/Earthing kits
for ESP RS485
CME 4 For up to 4 x ESP RS485
CME 8 For up to 8 x ESP RS485
CME 16 For up to 16 x ESP RS485
CME 32 For up to 32 x ESP RS485
For weatherproof enclosures,
please contact us.
Accessories
Connect in series with the signal
line either near where it enters or
leaves the building or close to the
equipment being protected
ensuring it is very close to the
system’s earth star point. Install
protectors either within an
existing cabinet/cubicle or in a
separate enclosure.
Installation
LPZ
RS485 0A3
RS485Q 0A3
SL RS485 0B3
ESP RS485
ESP RS485
DIRTY CLEAN
From
line
To
equipment
Earth
1
S
2
3
S
4
Lightning Barrier
From line
LINE CLEAN
Earth
To equipment
Furse
Wilford Road,
Nottingham,
NG2 1EB, UK
Clean
Line
Nominal voltage
Max working voltage, Uc
Current rating
In-line resistance
Max surge current
Let-throughvoltage, Up
30V
36.7V
750mA
1.01.0
20kA
63V
ESP RS485Q installed in series (in-line)
ESP SL RS485 installed in series
ESP RS485 installed in series
DIRTY CLEAN
From
line
To
equipment
Earth
The ESP SL ‘Slim Line’ Series is also available for protection of 3-wire and RTD applications
(ESP SL/3W & ESP SL RTD). The ESP SL X Series has approvals for use in hazardous areas.
NEW
NEW NEW
1Nominal voltage (DC or AC peak) measured at < 10 µA.
2Maximum working voltage (DC or AC peak) measured at
< 5 mA.
3The maximum transient voltage let-through of the protector
throughout the test (±10%), line to line & line to earth, both
polarities. Response time < 10 ns.
4Test 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).
Furse, Wilford Road, Nottingham, NG2 1EB Tel: +44 (0)115 964 3700 Email: enquiry@furse.com Web: www.furse.com
ESP RS485, RS485Q & SL RS485 Series
NEW
Technical specification
Electrical specification ESP RS485 ESP SL RS485 ESP RS485Q
Nominal voltage115 V
Maximum working voltage Uc216.7 V
Current rating (signal) 300 mA
In-line resistance (per line ±10%) 1
Bandwidth (-3 dB 50 system) 45 MHz
Transient specification ESP RS485 ESP SL RS485 ESP RS485Q
Let-through voltage (all conductors)3Up
C2 test 4 kV 1.2/50 µs, 2 kA 8/20 µs to
BS EN/EN/IEC 61643-21
55.0 V
C1 test 1 kV, 1.2/50 µs, 0.5 kA 8/20 µs to
BS EN/EN/IEC 61643-21
42.0 V
B2 test 4 kV 10/700 µs to BS EN/EN/IEC 61643-21 27.2 V
5kV, 10/700 µs428.2 V
Maximum surge current
D1 test 10/350 µs to - per signal wire
BS EN/EN/IEC 61643-21 - per pair
2.5 kA
5 kA
1.25 kA
2.5 kA
2.5 kA
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 RS485 ESP SL RS485 ESP RS485Q
Temperature range -40 to +80 ºC
Connection type Screw terminal Screw terminal Pluggable 12 way screw terminal
Conductor size (stranded) 2.5 mm24 mm22.5 mm2
Earth connection M6 stud Via DIN rail or 4 mm2earth terminal Via DIN rail or M5 threaded hole
in base of unit
Case material ABS UL94 V-0 FR polycarbonate UL94 V-0 ABS UL94 V-0
Weight - unit 0.08 kg 0.08 kg 0.1 kg
Weight -packaged (per 10) 0.85 kg 0.85 kg 1.3 kg
Dimensions
7 mm
104.6 mm
106.5 mm
2S1 2SE1
95 mm
69 mm
42 mm
M3 clearance
Depth: 18 mm
87 mm
120 mm
38 mm
19 mm
54 mm
105 mm
M4 clearance
109 mm
M4 clearance
ESP RS485
ESP RS485Q
ESP SL RS485