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.

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.

Usable width of the area provided by the design for application or installation of markings.

Usable height of the area provided by the design for application or installation of markings.

Number of positions provided in the product for installation of fuse-links.

Total number of electrical connection points provided by the product.

Centre-to-centre pitch between adjacent repeated electrical connection points or contacts.

Number of electrically independent potentials provided by the product design.

Number of vertically stacked or functionally distinct electrical connection levels.

Number of electrical connection points provided on one connection level.

Number of physical terminal positions provided by the product. This parameter is distinct from the number of connection points, potentials, and connection levels.

Number of separate positions provided on the product for installation or application of identification markings.

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

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

Indicates whether the product's primary material has electrical insulating properties and is intended to electrically separate conductive parts.

Primary electrical insulation material applied to or integrated with the conductive part of the product.

Manufacturer-declared thermal class of the electrical insulation system or insulation material.

Insulating material group used when evaluating creepage distances and insulation coordination.

Comparative Tracking Index (CTI) of the insulating material, characterizing its resistance to formation of conductive tracks under specified test conditions.

Manufacturer-declared temperature index of the insulating material.

Manufacturer-declared Relative Temperature Index (RTI) of the insulating material.

Primary material of the internal current-carrying part, bridge, busbar, or other conductive element of the product.

Grade, alloy designation, or other declared material designation of the main current-carrying part.

Metallic plating of the principal current-carrying part, different from its base material.

Material of the mechanical clamping element, such as a screw, spring, pressure plate, or clamping cage.

Protective or functional metallic plating of the mechanical clamping element.

Profile type of the DIN rail installed in the product or specified for compatible mounting.

Spatial orientation of the DIN rail relative to the product in its intended installed position.

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.

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

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

Indicates whether a separate end clamp or end stop is required to mechanically secure the terminal block or terminal row on the mounting rail.

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

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.

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

Highest rated current permitted for the relevant version or configuration of the product.

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

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

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

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.

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

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

Type of electrical insulation used, considered in terms of its protective function and construction.

Class of protection against electric shock determined by the product design and protective connection method.

Thermal power loss of the product or current-carrying system at rated current.

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.

Fuse systems with which the product is mechanically and electrically compatible.

Standardized fuse-link sizes that the product permits to be installed and used.

Maximum rated current of a fuse-link permitted for installation in the product.

Standardized fuse system or construction family of the fuse-link.

Standardized size or dimensional designation of the fuse-link.

Manufacturer-declared voltage drop across the product, connection path or current-carrying element at rated current under the specified reference conditions.

Manufacturer-declared temperature rise of the product above ambient temperature at rated current under the specified installation conditions.

Minimum manufacturer-declared clearance through air between conductive parts at different electrical potentials.

Minimum manufacturer-declared creepage distance along an insulating surface between conductive parts at different electrical potentials.

Maximum manufacturer-declared permissible temperature of the conductive part of the product in service.

Manufacturer-declared nominal conductor cross-section assigned to the relevant connection system.

Minimum conductor cross-section permitted by the connection system within its general conductor-size range.

Maximum conductor cross-section permitted by the connection system within its general conductor-size range.

Minimum conductor stripping length specified by the manufacturer.

Maximum conductor stripping length specified by the manufacturer.

Declared electrical contact resistance of a connection point where one common value applies to equivalent connections.

Maximum permissible temperature rise of a terminal or connection point under the declared test or operating conditions.

Maximum load current declared by the manufacturer for the specified conductor cross-section and operating conditions. This parameter is distinct from the overall rated current of the product.

Thread designation of the screw used in the conductor clamping mechanism, for example M2.5, M3, M4, or another manufacturer-declared designation.

Minimum rigid conductor cross-section permitted by an electrically and mechanically equivalent connection point.

Maximum rigid conductor cross-section permitted by an electrically and mechanically equivalent connection point.

Minimum flexible conductor cross-section permitted by the relevant connection point.

Maximum flexible conductor cross-section permitted by the relevant connection point.

Minimum flexible conductor cross-section with a ferrule without an insulating plastic collar permitted by the relevant connection point.

Maximum flexible conductor cross-section with a ferrule without an insulating plastic collar permitted by the relevant connection point.

Minimum flexible conductor cross-section with a ferrule and insulating plastic collar permitted by the relevant connection point.

Maximum flexible conductor cross-section with a ferrule and insulating plastic collar permitted by the relevant connection point.

Minimum cross-section of each of two conductors connected simultaneously using a TWIN ferrule.

Maximum cross-section of each of two conductors connected simultaneously using a TWIN ferrule.

Minimum flexible conductor cross-section with ultrasonically compacted strands permitted by the relevant connection point.

Maximum flexible conductor cross-section with ultrasonically compacted strands permitted by the relevant connection point.

Minimum rigid conductor cross-section suitable for direct insertion into a compatible connection without prior actuation of the release mechanism.

Maximum rigid conductor cross-section suitable for direct insertion into a compatible connection without prior actuation of the release mechanism.

Minimum conductor cross-section with a ferrule without an insulating plastic collar suitable for direct insertion into a compatible connection.

Maximum conductor cross-section with a ferrule without an insulating plastic collar suitable for direct insertion into a compatible connection.

Minimum conductor cross-section with a ferrule and insulating plastic collar suitable for direct insertion into a compatible connection.

Maximum conductor cross-section with a ferrule and insulating plastic collar suitable for direct insertion into a compatible connection.

Minimum cross-section of each of two equal rigid conductors that may be connected simultaneously to one clamping point.

Maximum cross-section of each of two equal rigid conductors that may be connected simultaneously to one clamping point.

Minimum cross-section of each of two equal flexible conductors that may be connected simultaneously to one clamping point.

Maximum cross-section of each of two equal flexible conductors that may be connected simultaneously to one clamping point.

Minimum cross-section of each of two equal flexible conductors fitted with separate ferrules without insulating collars and permitted for joint connection to one clamping point.

Maximum cross-section of each of two equal flexible conductors fitted with separate ferrules without insulating collars and permitted for joint connection to one clamping point.

Minimum operating voltage of the integrated electrical visual indicator.

Maximum operating voltage of the integrated electrical visual indicator.

Minimum operating current of the integrated electrical visual indicator.

Maximum operating current of the integrated electrical visual indicator.

Type of electrical current for which the integrated visual indicator is designed.

Indicates whether correct DC polarity is required for proper operation of the integrated indicator.

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

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

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.

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.

Indicates whether the material ceases self-sustained burning after the ignition source is removed under specified conditions.

Indicates whether the product is compatible with insulating terminal covers or protective terminal shrouds.

Indicates that the manufacturer explicitly permits replacement of the fuse-link while the holder supply side remains energized, subject to the stated operating instructions.

Indicates that the manufacturer explicitly permits replacement or withdrawal of the fuse-link while carrying load current.

Indicates that the fuse-holder includes a shutter or equivalent automatic cover that reduces access to live contacts when the fuse carrier or fuse-link is removed.

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 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 terminal markers are included in the product's standard equipment.

Number of terminal markers included in the product's standard equipment or provided for the specific version.

Indicates whether terminal jumpers are included in the product's standard equipment.

Number of terminal jumpers included in the product's standard equipment or provided for the specific version.

Indicates whether a label holder is included in the product's standard equipment.

Number of label holders included in the product's standard equipment or provided for the specific version.

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

Indicates whether one or more specified fuse-links are supplied with the product.

Indicates whether insulating terminal covers or protective terminal shrouds are supplied with the product.

Indicates that the required removable fuse carrier is supplied with the product.

Indicates whether the required or applicable end cover is supplied with the product.

Indicates whether a compatible partition or insulating plate is supplied with the product.

Indicates whether the fuse carrier or fuse-retaining mechanism is an integrated part of the product.

Indicates whether visual, electrical, or electronic fuse-blown indication is supported.

Indicates whether fuse-blown indication is integrated into the product without requiring a separate additional device.

Indicates whether monitoring of a fuse-link equipped with a mechanical striker is supported.

Indicates whether an electrical contact for signalling fuse-link operation is supported.

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

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.

Integrated fuse-link indication mechanisms used to show that the fuse has operated.

Mechanical arrangement used to insert, retain and remove the fuse-link from the fuse-holder or fuse base.

Indicates that the fuse carrier can be removed from the holder or base as a separate operating part.

Indicates that the fuse carrier or operating part can be mechanically locked against insertion, removal or operation.

Indicates that the fuse carrier, cap or operating part can be sealed against unauthorized access.

Indicates whether multiple connection points are electrically interconnected by an internal current-carrying bridge.

Indicates whether external electrical bridging of connection points or adjacent products is supported.

Supported technologies or methods for providing an external electrical bridging connection.

Indicates whether a separate end cover or closing plate is required to complete installation or the electrical insulation system.

Number of independent channels or rows provided by the design for installation of electrical cross-connections.

Number of electrical levels of the product that may be interconnected using a compatible bridging system.

Declared permissible current-carrying capacity of the compatible bridge or cross-connection system when used with the product.

Conductor cross-section associated with the declared current rating of the bridge system.

Maximum rigid conductor cross-section permitted by the connection point when an insertion bridge is installed.

Maximum flexible conductor cross-section permitted by the connection point when an insertion bridge is installed.

Indicates whether one or more positions or interfaces are provided for identification marking of the product.

Manufacturer's marking system or family of marking elements compatible with the product.

Indicates whether an additional holder or carrier for marking elements can be installed.

Pitch of standard marking elements accepted by the compatible marker carrier.

Indicates compatibility with a continuous marking strip extending across one or more adjacent terminal blocks.

Indicates whether a compatible partition or insulating plate can be installed between adjacent terminal blocks or groups of terminal blocks.

Color of the integrated visual status indicator or LED.

Regions or markets for which the manufacturer declares regulatory or certification compliance of the 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 separate manufacturer declaration concerning declared product characteristics or conformity is available.

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

Identification number of the certificate relating to the product or its certified version.

Name of the organization that issued the certificate or performed the relevant conformity assessment.

Indicates whether the product was tested by an organization independent of the manufacturer.

Indicates whether a test report confirming the declared product characteristics is available.

Indicates whether a type-test report for the product or relevant design is available.

Indicates whether a report of routine or acceptance tests on the manufactured product is available.

Indicates whether documented confirmation of design verification for the product or assembly is available.

Methods used to verify that the design complies with the declared requirements.

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

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

Indicates whether the EAC 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 cULus mark is applied to the product where applicable.

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 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.

Indicates whether the product falls within the scope of WEEE requirements for waste electrical and electronic equipment.

Indicates declared compliance of the material or product with the applicable requirements of EN 45545-2 concerning fire behaviour of materials and components used in railway vehicles.

Manufacturer-declared classification according to EN 45545-2, including the applicable requirement set and hazard level where such classification is specified.

Indicates declared compliance with the applicable IEC 60947-7-1 requirements for terminal blocks for copper conductors and test disconnect terminal blocks where applicable.

Indicates declared compliance with the applicable UL 1059 requirements for terminal blocks, including protective-conductor terminal blocks where applicable.

Indicates declared compliance or qualification of the product with the applicable EN 50155 requirements for railway rolling-stock equipment.

Indicates declared compliance of the product with the applicable IEC 61373 shock and vibration requirements for railway rolling-stock equipment.

Indicates declared compliance of the product with the applicable IEC 60947-7-3 requirements for fuse terminal blocks.

Indicates declared compliance of the product with the applicable general IEC 60079-0 requirements for Ex equipment and Ex components intended for explosive atmospheres.

Indicates declared compliance of the product with the applicable IEC 60079-7 requirements for equipment or Ex components using type of protection increased safety e.

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.