
● Do not use the appliance in the presence of inflammable substances.
● If it is necessary to transport the device, this should be done with great care. Abrupt
stops, bumps and violent impact could damage the unit or injure the user.
● Use only the accessories indicated by the manufacturer. Any change that is not expressly
approved by the manufacturer will invalidate the guarantee.
● Use only original spare parts. Non-original spare parts could cause fire, electrical discharge
or other hazards.
● Do not use cables that seem worn or old.
● Before connecting all the cables make sure the device is properly connected to the earth
circuit.
● Before starting any operation, make sure the power supply is disconnected.
● The appliance should only be considered switched off when the power supply has been
disconnected and the connecting cables to other devices have been removed.
● Connect the device to a power source corresponding to the indications given on the
marking label. Before proceeding with the installation make sure that the power line is
properly isolated. The supply voltage should never exceed the limit (±10%).
● Make especially sure that the power supply line is insulated at a sufficient distance from all
the other cables, including lightning protection devices.
● Installation category (also called Overvoltage Category) specifies the level of mains
voltage surges that the equipment will be subjected to. The category depends upon the
location of the equipment, and on any external surge protection provided. Equipment in an
industrial environment, directly connected to major feeders/short branch circuits, is
subjected to Installation Category III. If this is the case, a reduction to Installation
Category II is required. This can be achieved by use of an insulating transformer with an
earthed screen between primary and secondary, or by fitting listed Surge Protective
Devices (SPDs) from live to neutral and from neutral to earth. Listed SPDs shall be
designed for repeated limiting of transient voltage surges, suitable rated for operating
voltage and designated as follows: Type 2 (Permanently connected SPDs intended for
installation on the load side of the service equipment overcurrent device); Nominal
Discharge Current (In) 20 kA min. For example: FERRAZ SHAWMUT, STT2240SPG-CN,
STT2BL240SPG-CN rated 120 Vac / 240 Vac, (In=20 kA). Maximum distance between
installation and reduction is 5 m.
● A disconnecting device, readily and easily accessible, must be incorporated in the electrical
system of the building for rapid intervention.
● The unit has been made for connection using a 3-pole cable. To make a correct connection
to the earth circuit, follow the instructions in this handbook.
● The separate protective earthing terminal provided on this product shall be permanently
connected to earth.
● If the device has to be removed from the installation, always disconnect the earth cable
last.
● Take all necessary precautions to prevent the apparatus from being damaged by
electrostatic discharge.
2.2 Compliance
The EU Declaration of Conformity for this product is available for download at
www.siqura.com/support-files.
Safety and compliance
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