DIN SURGE DIVERTER
INSTALLATION INSTRUCTIONS
2003 ERICO
Inc, 34600 Solon Rd, Solon, OH 44139 Phone (440) 248-0100 Fax (440) 519-1675 Page 1 of 1
1. PREPARATION
DANGER: Possible electrical shock or burn
hazard. Qualified personnel should only install this
product. Failure to lockout electrical power during
installation or maintenance can result in fatal electrocution or
severe burns. Before making any connections to this
electrical panel please ensure that power has been removed
from all associated wiring, electrical panels, and other
electrical equipment.
CAUTION NOTES:
1. The installation of this DIN Surge Diverter (DSD) should
follow observe nationally recognized codes of authorities
having jurisdiction to ensure correct and safe operation.
2. Check to ensure that the maximum continuous operating
voltage Uc of the DSD selected is higher than that
expected on the circuit being protected.
3. It is important to ensure that the maximum line current
rating IL of the DSD is not exceeded.
4. The ground (earth) terminal must be connected to a low
impedance earth (<10 ohms) for correct operation.
5. Do not perform a “Flash Test” or use a Megger to test
circuits that are protected with these DSD units. This may
damage the DSD(s) and affect the insulation readings
being performed.
6. Do not attempt to open or tamper with the DSD unit in any
way as this may compromise performance and will void
warranty.
2. INTRODUCTION
The CRITEC low voltage DIN Surge Diverter (DSD12 and
DSD24) protectors have been designed to protect equipment
from the damaging effects of surges on low voltage data,
control and signaling lines.
3. ELECTRICAL CONNECTION
Please follow the sequence indicated:
1. First, ensure that power is removed from the area and the
circuits to be connected.
2. Connect line side wiring to the DSD screw terminals
marked (a, b). The “line side” of the DSD is the “exposed
side” where the surge is expected to originate.
3. Connect equipment side wiring to the DSD screw
terminals marked (a’, b’). The “equipment side” of the DSD
is the protected side and wires to the equipment being
protected.
4.The DSD should be installed as close to the equipment
being protected as possible. Where protecting long cable
runs (< 30 meters), a DSD unit should be installed at either
end of the cable.
5. Connect the DSD ground terminal to a low impedance
ground using as direct a path as possible. When the DSD
is installed on a DIN rail, grounding of the unit can be
achieved by connecting the rail to ground.
Table 1. DSD operating specifications
Model DSD 12 DSD 24
Nominal System Voltage Un 12V-- 24V--
Max. Cont. Operating Voltage Uc 15V-- 28V--
Max. Line Current I
L
10A
Imax 600A 8/20µs 300A 8/20µs
Dimensions 67mm x 62mm x 6mm
Connection =2.5 mm
2
(#18 to #13 AWG)
Mounting 35mm top hat DIN rail
Temperature -25 to +70°C (-13 to +158°F)
PRODUCT SERIES
DSD-12, DSD-24
(2 pages)
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