Commercial or technical designation of a manufacturer's product family sharing a common design and compatible characteristics.

Range of tasks and systems for which the manufacturer recommends the component.

Primary function of the device and its intended use as defined by its design and the manufacturer's documentation.

Permissible installation location of the product: indoors, outdoors, in a technical area, or as part of equipment.

Environmental conditions under which installation and operation of the product are permitted.

Permissible spatial orientation of the component during installation and operation.

Declared type or combined type of surge protective device according to the applicable SPD product standard.

Functional response of the SPD to an overvoltage: voltage limiting, voltage switching, or a combination of both.

Principal technologies or nonlinear protective components used by the product to limit or divert a surge overvoltage.

Constructional classification of an SPD by number of ports, for example one-port or two-port design according to the applicable standard.

Declared behaviour of the SPD at end of life or after failure of a protective element, including open-circuit or short-circuit state where provided by design.

SPD construction and installation type according to UL 1449 classification, distinct from IEC Type 1, Type 2, and Type 3 classification.

External horizontal dimension of the product between its outermost lateral points.

External vertical dimension of the product from its lowest to its highest point.

External distance between the foremost and rearmost surfaces of the product.

Horizontal dimension of the mounting cutout or opening required to install the product in a prepared surface or recess.

Vertical dimension of the mounting cutout or opening required to install the product in a prepared surface or recess.

Depth of the mounting cutout or recess intended to accommodate the recessed part of the product.

Depth of the enclosure portion installed within a wall or mounting recess.

Distance by which the front part of the installed product projects beyond the wall surface.

Primary material from which the product is manufactured.

Grade, alloy, class, or technical designation of the product's primary material.

Primary visually perceived colour of the product's external surface.

Designation of the product's primary surface colour according to the RAL colour system.

Type of final surface finish of the product determining its appearance and service properties.

Character of the surface microrelief and visual structure after manufacturing or finishing.

Technological surface treatment applied to modify its protective, mechanical, or decorative properties.

Type of protective, functional, or decorative coating applied to the surface.

Material or chemical basis of the coating applied to the surface of the product or one of its parts.

Thickness of the coating layer applied to the surface of the product or one of its parts.

Indicates whether the product material is classified as halogen-free according to the characteristics declared by the manufacturer.

Classification of a material according to its ability to ignite, sustain combustion, and cease burning under a specified test.

Temperature of the heated wire used when testing the material or product against an ignition source.

Lowest declared glow-wire temperature at which ignition of the material is assessed according to the specified method.

Installation arrangement permitted by the product design, such as wall-mounted, flush-mounted, floor-mounted, or another specified mounting type.

Method used to mechanically secure the product to a support, surface, or load-bearing structure.

Type of surface or supporting base to which the product may be fixed.

Number of holes provided in the product for mechanical fixing.

Diameter of the hole provided for a fixing element used when mounting the product.

Geometric shape of the hole intended for mechanical fixing of the product.

Distance between the centres of mounting holes in the horizontal direction.

Distance between the centres of mounting holes in the vertical direction.

Horizontal dimension of the mounting pattern between the outermost fixing points of the product.

Vertical dimension of the mounting pattern between the outermost fixing points of the product.

Size designation of the screw, bolt, or other threaded fastener used for mounting the product.

Designation of the thread provided in the product's mounting holes or fixing elements.

Tightening torque recommended or permitted for fasteners during product installation.

Indicates whether the required fasteners are included with the product.

Primary material of screws, bolts, nuts, rivets, and other product fasteners.

Indicates whether equipment may be mounted directly to the mounting surface without an intermediate DIN rail.

Indicates whether the design provides for mounting equipment on a DIN rail.

List of DIN rail profiles with which the product is mechanically compatible.

Indicates whether the intended installation of the product can be carried out without tools.

Minimum free space required above the product for installation, cooling, or servicing.

Minimum free space required below the product for installation, cooling, or servicing.

Minimum free space required to the left of the product for installation or servicing.

Minimum free space required to the right of the product for installation or servicing.

Minimum free space required in front of the product for installation and normal operation.

Minimum free space required behind the product for installation and normal operation.

Minimum free space in front of the product required for safe access during servicing.

Voltage value assigned to the product by the manufacturer for specified application conditions and characteristics.

Rated RMS value of alternating voltage assigned to the product by the manufacturer.

Rated direct voltage assigned to the product by the manufacturer.

Operating-circuit voltage with reference to which the product's performance characteristics are specified.

Maximum voltage at which continuous operation of the product is permitted under the conditions declared by the manufacturer.

Minimum voltage at which the manufacturer guarantees the intended operating mode of the product.

Voltage with reference to which the product's insulation clearances and dielectric properties are specified.

Peak value of an impulse voltage of specified waveform that the product insulation must withstand without breakdown.

Test voltage applied to verify the dielectric strength of the product insulation.

Minimum permissible insulation resistance between the specified electrically separated parts.

Degree of pollution of the surrounding microenvironment considered when selecting insulation distances and product characteristics.

Maximum thermal power loss that the product can dissipate under specified conditions.

Ambient temperature to which the manufacturer's declared electrical or thermal characteristic applies.

Maximum nominal conductor cross-section permitted at the product's incoming connection.

Maximum nominal conductor cross-section permitted at the product's outgoing connection.

Minimum conductor cross-section permitted for connection to the incoming terminal of the main power circuit.

Minimum conductor cross-section permitted for connection to the outgoing terminal of the main power circuit.

Conductor materials for which the specified terminals and connection methods are designed.

Conductor connection methods supported by the specified terminals or connection elements.

Conductor construction classes permitted by the product's electrical connection system.

Maximum number of main-power-circuit conductors that may be connected simultaneously to one terminal.

Tightening torque specified by the manufacturer for a screw or bolted terminal connection.

Type of electrical current for which the product's main supply circuit is intended.

Current assigned to the product by the manufacturer for the declared operating and thermal conditions.

AC frequency assigned to the product for normal operating conditions.

Lower limit of the electrical network or signal frequency at which product operation is permitted.

Upper limit of the electrical network or signal frequency at which product operation is permitted.

Number of phases of the electrical system for which the product is designed to be connected or used.

Configuration of live and neutral conductors of the electrical system supported by the product.

Pole-count configurations for which the product is intended to be used or connected.

Actual electrical pole configuration of the product, including the number and function of switched poles.

Category characterizing the expected level of impulse overvoltages at the product's point of use.

Maximum nominal cross-section of the neutral conductor permitted by the relevant product connection.

Minimum neutral conductor cross-section permitted for connection to the corresponding product terminal.

Maximum nominal cross-section of the PE protective conductor permitted by the relevant product connection.

Minimum PE protective conductor cross-section permitted for the specified protective connection of the product.

Manufacturer-declared permissible short-circuit current value for the product or assembly under specified conditions.

Maximum prospective short-circuit current at the installation point for which the product may be used.

Indicates whether an external short-circuit protective device is required for the declared operation of the product.

Indicates whether an additional upstream protective device is required to achieve the declared product characteristics.

Indicates whether the manufacturer permits the device to be supplied from the side opposite to the normal or marked supply direction.

Indicates whether specified polarity or current direction must be observed when the product operates in a DC circuit.

Manufacturer-permitted or specified side for connecting the main power supply to the product.

Electrical network earthing systems with which the product may be used in the declared configuration.

Combinations of electrical conductors between which the device provides protection against surge overvoltages.

Declared voltage protection level Up characterizing the limited voltage across the SPD during the specified standardized test.

Nominal discharge current In declared for the SPD for the specified standardized current impulse waveform.

Maximum discharge current Imax that the SPD is capable of withstanding for the specified standardized impulse waveform.

Impulse discharge current Iimp used to characterize the ability of the SPD to withstand a high-energy current impulse.

Declared total discharge current of a multipole or multimode SPD where the manufacturer specifies an overall value for the product.

Open-circuit voltage Uoc of the combination-wave generator corresponding to the declared SPD test level.

Short-circuit current of the combination-wave generator corresponding to the declared SPD test level.

Maximum power-frequency follow current that the SPD can interrupt by itself after operation, where such a condition is applicable.

Temporary overvoltage (TOV) level that the SPD can withstand or safely handle under the declared conditions.

Duration of exposure corresponding to the declared temporary overvoltage (TOV) withstand level.

Declared leakage current of the product under specified normal operating conditions.

Current flowing through the SPD during normal continuous operation at the declared conditions and operating voltage.

Declared current flowing through the protective conductor under specified normal operating conditions of the product.

Manufacturer-declared response time of the relevant protective function of the product to a surge impulse.

Declared connection topology of the SPD protective circuits defining their electrical connection to conductors of the protected system.

DC-system grounding configurations for which the manufacturer declares the product suitable.

Voltage Protection Rating (VPR) declared for the SPD according to the UL 1449 test method.

Declared transferred impulse charge Q associated with the impulse discharge current Iimp.

Declared specific energy W/R associated with the impulse discharge current Iimp.

Degree of enclosure protection against access to hazardous parts and ingress of solid objects and water, designated by the IP code.

IP degree of protection provided by the accessible front side of the product after its intended installation.

Class of enclosure resistance to external mechanical impacts designated by the IK code.

Indicates whether the declared ingress protection of the enclosure has been verified by certification or testing.

Method or level of protection of the user against direct contact with hazardous live parts.

Indicates whether the design prevents finger access to hazardous live parts in the intended condition.

Indicates whether the design provides protection against accidental contact with hazardous live parts.

Indicates whether insulating or mechanical protective shrouds are included with the product.

Indicates whether live parts are covered by protective elements in the intended product state.

Indicates whether the material and coating are designed to withstand ultraviolet radiation.

Indicates whether the product materials retain their declared properties when exposed to the specified oils.

Groups of chemicals or environments whose effects the product can withstand under the declared conditions.

Indicates whether the SPD contains an internal disconnector or equivalent device providing the intended separation of the protective element from the circuit.

Indicates whether a thermal disconnector is provided to disconnect the protective element in the event of overheating, degradation, or the specified fault condition.

Maximum rated current of an external backup overcurrent protective device permitted by the manufacturer for use with the SPD.

Indicates whether the SPD design includes a means intended to establish a specified controlled short-circuit condition in the relevant failure mode.

Types of external overcurrent protective devices permitted by the manufacturer as backup protection for the SPD.

Minimum ambient temperature at which normal operation of the product is permitted.

Maximum ambient temperature at which normal operation of the product is permitted.

Maximum permissible average ambient temperature over a consecutive 24-hour period.

Minimum ambient temperature permitted during storage of the product while not in operation.

Maximum ambient temperature permitted during storage of the product while not in operation.

Minimum ambient temperature permitted during transportation of the product.

Maximum ambient temperature permitted during transportation of the product.

Minimum ambient temperature at which the manufacturer permits installation of the product.

Maximum ambient temperature at which the manufacturer permits installation of the product.

Indicates whether permissible electrical or thermal loading must be reduced as temperature changes.

Temperature above which the permissible product load must be reduced.

Indicates whether the manufacturer has published the relationship between permissible product load and temperature.

Minimum relative air humidity permitted for the declared operating or test condition.

Maximum relative air humidity permitted for the declared operating or test condition.

Temperature at which the corresponding relative humidity value is specified or standardized.

Indicates whether the permissible humidity value applies only to non-condensing conditions.

Maximum altitude above sea level at which the product may be installed without exceeding the declared conditions.

Indicates whether the permissible product load must be reduced as installation altitude increases.

Altitude above sea level above which the permissible product load must be reduced.

Indicates whether the manufacturer provides a table or curve for derating the permissible load when operating above the reference altitude.

Indicates whether the product's resistance to vibration has been verified under the declared conditions.

Indicates whether the product's resistance to short-duration mechanical shocks has been verified.

Standard or method used for climatic, mechanical, or combined testing of the product.

Indicates whether a local control element such as a handle, lever, rotary element, or similar device is supplied with the product.

Indicates whether an accessory pack is included in the product's standard equipment.

Indicates whether an installation hardware kit is included in the product's standard equipment.

Indicates whether documentation is included in the product's standard supply.

Indicates whether an installation manual is included with the product.

Indicates whether a wiring diagram is included with the product.

Indicates whether one or more auxiliary contacts are included in the standard product configuration.

Indicates whether an alarm signalling contact is included in the product's standard equipment.

Indicates whether the product supports installation or connection of specified auxiliary contacts.

Indicates whether a discrete alarm signal can be generated through the provided signalling contact.

Indicates whether a local human-machine interface (HMI) is provided for monitoring, configuration, or control.

Indicates whether the product has an integrated local display.

Technology or construction type of the product's integrated display.

Indicates whether the integrated display has a backlight.

Number of integrated LEDs used to indicate product status or operating modes.

Indicates whether the product can store an internal event log.

Maximum number of event records that can be stored in the product's internal log.

Indicates whether an integrated real-time clock is provided for timekeeping, event time-stamping, or time-based functions.

Number of available digital inputs of the product.

Number of available digital outputs of the product.

Indicates whether user-configurable functions can be assigned to one or more digital inputs.

Indicates whether user-configurable functions can be assigned to one or more digital outputs.

Indicates whether the product supports digital data exchange with external devices or systems.

List of supported digital data communication protocols.

List of supported physical or logical digital communication interfaces.

Indicates whether an integrated web server or web interface is provided for access to product functions.

Indicates whether specified product settings can be read or changed remotely through a supported communication interface.

Indicates whether diagnostic information, status data, or fault information can be obtained remotely.

Indicates whether the product is structurally or interface-ready for connection to remote condition or parameter monitoring systems.

Indicates whether a touchscreen is provided for user input through the local HMI.

Indicates whether the HMI can be mounted separately from the main switching-device enclosure while retaining the intended interface functions.

Indicates whether the product performs internal diagnostic checks to detect or report internal faults.

Indicates whether end-of-life indication or estimation of remaining product life is provided.

Indicates whether the product has a local visual or mechanical indicator of operating, fault, or end-of-life status.

Types of local visual or mechanical status indication provided by the product design.

Indicates whether the protective module or SPD cartridge can be replaced without replacing the complete base part of the product.

Number of separate protective modules or cartridges forming part of the complete product.

Certification, market-approval, or conformity marks applicable to the product.

Primary normative document or standard according to which the manufacturer classifies or assesses the product.

Additional normative documents and standards declared by the manufacturer as applicable to the product.

Indicates whether an official declaration of conformity is available for the product.

Indicates whether a certificate relating to the declared certification or conformity of the product is available.

Indicates whether the CE marking is applied to the product where applicable.

Indicates whether the product has a declared UL Listed certification or recognition status.

Indicates whether the product has a declared UL Recognized certification or recognition status.

Indicates whether the product has a declared CSA certification or recognition status.

Indicates whether the product has a declared TÜV certification or recognition status.

Indicates whether the product has a declared VDE certification or recognition status.

Indicates the presence of an approval or certification for use of the product on railway rolling stock or in railway infrastructure.

Indicates whether product compliance with applicable RoHS restrictions on hazardous substances has been declared.

Indicates whether the manufacturer declares compliance of the product with applicable REACH Regulation requirements.

Additional manufacturer information concerning standards, certificates, declarations, and limitations of the declared compliance scope.

Indicates whether the manufacturer declares product compliance with IEC 60529.

Indicates whether the product has been tested according to applicable methods of the IEC 60068 series.

Indicates declared compliance with the applicable IEC 61643-31 requirements and test methods for surge protective devices intended for the DC side of photovoltaic installations.

Indicates declared compliance with the applicable general requirements and test methods of IEC 61643-01 for low-voltage surge protective devices.

Indicates declared compliance with the applicable UL 1449 requirements for surge protective devices.

Indicates declared compliance with the applicable CSA C22.2 No. 269.1 requirements for permanently connected Type 1 surge protective devices.

Indicates declared compliance with the applicable CSA C22.2 No. 269.2 requirements for permanently connected Type 2 surge protective devices.

Indicates declared compliance with the applicable CSA C22.2 No. 269.3 requirements for Type 3 surge protective devices of the applicable construction.

Indicates declared compliance with the applicable CSA C22.2 No. 269.4 requirements for Type 4 surge protective device component assemblies.

Indicates declared compliance with the applicable CSA C22.2 No. 269.5 requirements for Type 5 surge protective device components.

Indicates declared compliance with the applicable DIN EN 61643-31 / VDE 0675-6-31 requirements for surge protective devices used in photovoltaic installations.

Mass of the product itself, excluding transport packaging, additional accessories, and external equipment.

Mass of the product together with its individual packaging and the accessories included in it.

External horizontal dimension of the product's individual package.

External vertical dimension of the product's individual package.

External depth dimension of the product's individual package.

Design type of the product's individual or transport packaging.

Number of individual products contained in one packaging unit at the specified level.

Country of origin of the goods declared for customs or commercial purposes.

Commodity code under the international Harmonized Commodity Description and Coding System.

Commodity code under the Combined Nomenclature of the European Union.