Furse Total Solution to Earthing & Lightning Protection

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ESP DC Series
TSC-0912 - 09.10.12
Technical specification
Electrical specification ESP 12 DC ESP 24 DC ESP 36 DC ESP 48 DC
Nominal voltage (RMS) 12 V 24 V 36 V 48 V
Maximum voltage (RMS) 15 V 30 V 45 V 60 V
Working voltage (RMS) 9-15 V 18-30 V 27-45 V 36-60 V
Max. back-up fuse (see installation instructions) 63 A
Leakage current (to earth) < 250 µA
Indicator circuit current < 10 mA
Volt free contact1
- current rating
- nominal voltage (RMS)
Screw terminal
1 A
250 V
Transient specification ESP 12 DC ESP 24 DC ESP 36 DC ESP 48 DC
Type 2 (BS EN/EN), Class II (IEC)
Nominal discharge current 8/20 µs (per mode) In 5 kA
Let-through voltage Up at I n2 250 V 250 V 250 V 250 V
Maximum discharge current Imax (per mode)3 20 kA
Type 3 (BS EN/EN), Class III (IEC)
Let-through voltage at Uoc of 6 kV 1.2/50 µs and
I sc of 3 kA 8/20 µs (per mode)4
190 V 190 V 190 V 190 V
Mechanical specification ESP 12 DC ESP 24 DC ESP 36 DC ESP 48 DC
Temperature range -40 to +80 ºC
Connection type Screw terminal
Conductor size (stranded) 16 mm2
Earth connection Screw terminal
Volt free contact Connect via screw terminal with conductor up to 2.5 mm2 (stranded)
Degree of protection (IEC 60529) IP20
Case material Steel
Weight - unit 0.6 kg 0.6 kg 0.6 kg 0.6 kg
Weight - packaged 0.7 kg 0.7 kg 0.7 kg 0.7 kg
Dimensions
M5 Clearance
Note: The unit takes
up 20 mm of the length
of the fixing screw
Depth:
73 mm
60 mm
45.5 mm
180 mm 165 mm
1 Minimum permissable load is 5 V DC, 10 mA to ensure
reliable operation.
2 The maximum transient voltage let-through of the protector
throughout the test (±5%) per mode.
3 The electrical system, external to the unit, may constrain the
actual current rating achieved in a particular installation.
4 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.