Furse lightning protectors for signal and telephone lines

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Use on twisted pair signalling applications which require either a lower in-line resistance, an increased current or a higher bandwidth than the D Series.
Also suitable for DC power applications less than 1.25 amps.
Available for working voltages of up to 6, 15, 30 or 50 volts.

Application

Use these units to protect resistance sensitive, higher frequency or running current systems. Typical uses include the protection of:

alarm systems
high speed digital communications equipment
systems with long signal lines

Features and benefits

Controls transient overvoltages to a low level to ensure maximum protection for your equipment.

Protection between all lines closes all transient paths to equipment for complete protection.

Provides repeated protection in lightning intense environments.

Very low (1ohm) in-line resistance allows resistance critical applications (eg alarm loops) to be protected.

High (1.25A) maximum running current.

ESP 30E installed on top hat DIN rail

ESP E Range Brochure

ESP 06E Protector

High bandwidth enables higher frequency (high traffic or bit rate) data communications.

Strong, flame retardant, ABS housing.

Supplied ready for flat mounting on base or side.

Built-in DIN rail foot for simple clip-on mounting to top hat DIN rails.

Protector flat mounted on side

Colour coded terminals give a quick and easy installation check - grey for the dirty (line) end and green for clean .

Screen terminal enables easy connection of cable screen to earth.

Substantial earth stud to enable effective earthing.

Integral earthing plate enables enhanced connection to earth via CME kit.

Straightforward, comprehensive installation instructions.

UK Oftel Approval NS/G/1235/W/100025.

5 year warranty.

Installation

Installation diagram

Connect in series with the data communication or signal line either near where it enters or leaves the building or close to the equipment being protected (eg within its control panel). Either way it must be very close to the systems earth star point. Install protectors either within an existing cabinet/cubicle or in a separate enclosure. If installing several protectors together these can be simultaneously mounted and earthed via a CME kit.

Suitable accessories

Simultaneously mount and earth up to 4 of these protectors on a CME 4, up to 8 on a CME 8, up to 16 on a CME 16 or up to 32 on a CME 32 - click here for details.

Enclosures suitable for up to two (WBX 2/G) or three (WBX 3/G) protectors, or a CME 4 and its associated protectors (WBX 4), CME 8 and protectors (WBX 8) or one or two CME 16 kits and protectors (WBX 16/2) can be found here.

Protectors installed on a combined mounting and earthing kit (CME 8) within a WBX 8 enclosure.

Electrical specification

	ESP 06E	ESP 15E	ESP 30E	ESP 50E
Nominal voltage¹	6V	15V	30V	50V
Maximum working voltage²	7.79V	16.7V	36.7V	56.7V
Current rating (signal)	1.25A	1.25A	1.25A	1.25A
In-line resistance (per line ± 10%)	1.0ohm	1.0ohm	1.0ohm	1.0ohm
Bandwidth (-3dB 50ohm system)	1.5MHz	>10MHz	>10MHz	>10MHz

1 Nominal voltage (DC or AC peak) measured at <10µA (ESP 15E, ESP 30E, ESP 50E) and <200µA (ESP 06E).
2 Maximum working voltage (DC or AC peak) measured at <5mA leakage (ESP 15E, ESP 30E, ESP 50E), <10mA (ESP 06E).

Transient specification

	ESP 06E	ESP 15E	ESP 30E	ESP 50E
Let through voltage (all conductors)1 5kV,10/700µs test to: BS 6651:1999 Appendix C, Cat C-High ITU (formerly CCITT) IX K17	10.8V	26.2V	44.3V	65.8V
Maximum surge current² -per signal wire -per pair	10kA 20kA	10kA 20kA	10kA 20kA	10kA 20kA

1 The maximum transient voltage let-through the protector throughout the test (+/-10%), line to line & line to earth. Response time <10ns.
2 Tested with 8/20µs waveshape to ITU (formely CCITT), BS 6651:1999 Appendix C.

Mechanical specification

	ESP 06E	ESP 15E	ESP 30E	ESP 50D	ESP 50E
Temperature range	-25°C to +70°C	-25°C to +70°C	-25°C to +70°C	-25°C to +70°C	-25°C to +70°C
Connection type	Screw terminal	Screw terminal	Screw terminal	Screw terminal	Screw terminal
Connection size (stranded)	1.5mm²	1.5mm²	1.5mm²	1.5mm²	1.5mm²
Earth connection	M6 stud	M6 stud	M6 stud	M6 stud	M6 stud
Weight -unit -packaged (per 10)	0.08kg 0.85kg	0.08kg 0.85kg	0.08kg 0.85kg	0.08kg 0.85kg	0.08kg 0.85kg
Dimensions

ESP E Range Brochure