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Furse, Wilford Road, Nottingham, NG2 1EB • Tel: +44 (0)115 964 3700 • Email:
enquiry@furse.com• Web:
www.furse.comESP D1 Series (Single Phase)
TSC-0912 - 09.10.12
Technical specification
Electrical specification
ESP 120 D1
ESP 240 D1
ESP 277 D1
Nominal voltage - Phase-Neutral
U
o
(RMS)
120 V
240 V
277 V
Maximum voltage - Phase-Neutral
U
c
(RMS)
150 V
280 V
350 V
Temporary Overvoltage TOV
U
T
1
175 V
350 V
402 V
Short circuit withstand capability
25 kA, 50 Hz
Working voltage
(RMS)
90-150 V
200-280 V
232-350 V
Frequency range
47-63 Hz
Max. back-up fuse
(see installation instructions)
125 A
Leakage current
(to earth)
< 250 µA
Indicator circuit current
< 10 mA
Volt free contact
2
- current rating
- nominal voltage
(RMS)
Screw terminal
1 A
250 V
Transient specification
ESP 120 D1
ESP 240 D1
ESP 277 D1
Type 1 (BS EN/EN), Class I (IEC)
Nominal discharge current 8/20 µs (per mode)
I
n
20 kA
Let-through voltage
U
p at
I
n
3
600 V
900 V
1 kV
Impulse discharge current 10/350 µs
I
imp
(per mode)
4
4 kA
Let-through voltage
U
p at
I
imp
3
500 V
750 V
850V
Impulse discharge current (per phase)
I
imp
5
6.25 kA
Type 2 (BS EN/EN), Class II (IEC)
Nominal discharge current 8/20 µs (per mode)
I
n
20 kA
Let-through voltage
U
p at
I
n
3
600 V
900 V
1 kV
Maximum discharge current
I
max (per mode)
4
40 kA
Maximum discharge current
I
max (per phase)
80 kA
Type 3 (BS EN/EN), Class III (IEC)
Let-through voltage at
U
oc of 6 kV 1.2/50 µs and
I
sc of 3 kA 8/20 µs (per mode)
6
390 V
600 V
680 V
Mechanical specification
ESP 120 D1
ESP 240 D1
ESP 277 D1
Temperature range
-40 to +80 ºC
Connection type
Screw terminal
Conductor size
(stranded)
25 mm
2
Earth connection
Screw terminal
Volt free contact
Connect via screw terminal with conductor up to 1.5 mm
2
(stranded)
Degree of protection
(IEC 60529)
IP20
Case material
FR ABS UL-94 V-0
Weight -
unit
0.4 kg
Weight
-
packaged
0.5 kg
Dimensions
to DIN 43880 - HxDxW
7
90 mm x 88 mm x 72 mm (4TE)
1
Temporary Overvoltage rating is for a maximum duration of
5 seconds tested to BS EN/EN/IEC 61643.
2
Minimum permissable load is 5 V DC, 10 mA to ensure
reliable operation.
3
The maximum transient voltage let-through of the protector
throughout the test (±5%), phase to neutral, phase to earth
and neutral to earth.
4
The electrical system, external to the unit, may constrain the
actual current rating achieved in a particular installation.
5
Rating is considered as the current capability of the protector
for equipotential bonding near the service entrance.
6
Combination wave test within BS EN/IEC 61643,
IEEE C62.41-2002 Location Cats C1 & B3, SS 555:2010,
AS/NZS 1768-2007, UL 1449 mains wire-in.
7
The remote signal contact (removable) adds 10 mm
to height.
72 mm
90 mm
45 mm
50 mm 38 mm
Standard
depth
88 mm