Distribution Busbar
Busbar intended to distribute electrical power from one or more incoming points to multiple outgoing connections.
A distribution busbar is used to form a common supply node and distribute current among multiple outgoing circuits.
Unlike a simple solid bar, such a design may have clearly defined incoming and outgoing connection points with different permitted conductor cross-sections and terminal types.
Principal parameters include the number of incoming and outgoing connections, total rated current of the busbar, maximum current of an individual outgoing connection, and the types of connections used.
Additional considerations include conductor material, resistance, thermal conditions, distances between connection points, and insulation characteristics.
Selection must consider both the total supply current and the permissible load of each individual outgoing connection point.
This subcategory includes busbars intended to distribute power from incoming connections to multiple independent outgoing connections.
Distribution Busbar
General8
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.
Design type of busbar system used for electrical current distribution.
Electrical conductor role performed by the standalone busbar product, such as phase, neutral, PE, PEN, distribution, or DC polarity conductor.
Dimensions8
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.
External linear dimension of the product along its longitudinal direction or principal length axis.
Dimension of a material, part, or product between two opposite surfaces, measured in the thickness direction.
Transverse dimension of a product or its circular element measured through the centre between opposite points of the circumference.
Mass of the product per unit length.
Nominal thickness of the electrical insulation layer of the product.
Capacity and Layout4
Total number of electrical connection points provided by the product.
Centre-to-centre pitch between adjacent repeated electrical connection points or contacts.
Number of electrical connection points intended for incoming or supply-side connections.
Number of electrical connection points intended for outgoing or load-side connections.
Materials and Finish10
Primary material from which the product is manufactured.
Grade, alloy, class, or technical designation of the product's primary material.
Material from which the current-carrying busbars are made.
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.
Primary electrical insulation material applied to or integrated with the conductive part of the product.
Mounting and Installation21
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.
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.
Indicates whether the product has regularly arranged mounting or functional perforations.
Indicates whether the product can be shortened to the required length by the intended mechanical cutting method.
Distance between adjacent mechanical supports or insulators of the busbar system.
Electrical Parameters43
Current assigned to the product by the manufacturer for the declared operating and thermal conditions.
Current that the product can carry continuously under the manufacturer's declared conditions without exceeding permissible temperature rise.
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.
Type of electrical current for which the product's main supply circuit is intended.
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.
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.
Category characterizing the expected level of impulse overvoltages at the product's point of use.
Manufacturer-declared permissible short-circuit current value for the product or assembly under specified conditions.
RMS value of short-time withstand current Icw that the product can withstand for the declared duration without unacceptable damage.
Duration for which the product must withstand the declared short-time current.
Peak current value Ipk that the product can withstand under the declared short-circuit conditions.
Maximum thermal power loss that the product can dissipate under specified conditions.
Thermal power loss of the product or current-carrying system at rated current.
Ambient temperature to which the manufacturer's declared electrical or thermal characteristic applies.
Cross-sectional area of the current-carrying busbar.
Manufacturer-declared electrical conductivity of the material, expressed as percent IACS where this convention is applicable.
Manufacturer-declared DC resistance per unit length of the conductor at the specified reference temperature.
Manufacturer-declared temperature rise of the product above ambient temperature at rated current under the specified installation conditions.
Number of phases of the electrical system for which the product is designed to be connected or used.
Actual electrical pole configuration of the product, including the number and function of switched poles.
Pole-count configurations for which the product is intended to be used or connected.
Configuration of live and neutral conductors of the electrical system supported by the product.
Maximum nominal conductor cross-section permitted at the product's incoming connection.
Minimum conductor cross-section permitted for connection to the incoming terminal of the main power circuit.
Maximum nominal conductor cross-section permitted at the product's outgoing connection.
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 construction classes permitted by the product's electrical connection system.
Conductor connection methods supported by the specified terminals or connection elements.
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.
Maximum manufacturer-declared continuous current permitted for an individual outgoing connection point. This is distinct from the total rated current of the product.
Electrical connection technologies supported at the incoming or supply-side connection points of the product.
Electrical connection technologies supported at the outgoing or load-side connection points of the product.
Equivalent copper conductor cross-section corresponding to the declared current-carrying capability of the product.
Protection and Safety11
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.
Method or level of protection of the user against direct contact with hazardous live parts.
Indicates whether live parts are covered by protective elements in the intended product state.
Indicates whether insulating or mechanical protective shrouds are included with the product.
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 functional or protective electrical insulation is provided over all or part of the conductive surface of the product.
Indicates whether the product is compatible with insulating terminal covers or protective terminal shrouds.
Indicates whether insulating terminal covers or protective terminal shrouds are supplied with the product.
Environmental Conditions23
Minimum ambient temperature at which normal operation of the product is permitted.
Maximum ambient temperature at which normal operation of the product is permitted.
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.
Maximum permissible average ambient temperature over a consecutive 24-hour period.
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 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.
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.
Included Equipment9
Indicates whether busbar supports are included in the product's standard equipment.
Number of busbar supports included in the product's standard equipment or provided for the specific version.
Indicates whether busbar protective covers are included in the product's standard equipment.
Number of busbar covers included in the product's standard equipment or provided for the specific version.
Indicates whether busbar insulators are included in the product's standard equipment.
Number of busbar insulators included in the product's standard equipment or provided for the specific version.
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.
Standards and Compliance22
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 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 product has been tested according to applicable methods of the IEC 60068 series.
Indicates declared compliance with the applicable IEC 60664-1 insulation-coordination principles, requirements, and tests for equipment within low-voltage supply systems.
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 whether the manufacturer declares product compliance with IEC 61439-1.
Indicates whether the manufacturer declares product compliance with EN IEC 61439-1.
Indicates whether the manufacturer declares product compliance with IEC 61439-2.
Indicates whether the manufacturer declares product compliance with EN IEC 61439-2.
Logistics10
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.