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.

High-level electrical or process monitoring domains supported by the product.

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.

Number of independent relay outputs or sets of switching contacts provided by the product.

Contact configurations provided for the product relay outputs.

Functions permanently assigned or assignable to the product relay outputs.

Number of normally open switching contact sets provided by the relay.

Number of normally closed switching contact sets provided by the relay.

Number of changeover contact sets provided by the relay.

Minimum number of electrical cycles used for ROCOF evaluation where configurable or specified by the manufacturer.

Maximum number of electrical cycles used for ROCOF evaluation where configurable or specified by the manufacturer.

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.

Primary material from which the product is manufactured.

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

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

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.

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.

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.

Maximum manufacturer-declared active power that may be switched by the relay-output contacts.

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

Maximum manufacturer-declared time required to complete one measurement and evaluation cycle of the monitoring function.

Relationship between the monitored measuring circuit and the electrical supply required for operation of the monitoring or indication function.

Defines whether a monitoring threshold is specified as an absolute measured value or relative to a nominal or measuring-range value.

Nominal frequency of the electrical source or circuit monitored by the device.

Lower limit of the manufacturer-declared frequency measurement range.

Upper limit of the manufacturer-declared frequency measurement range.

Manufacturer-declared absolute accuracy of frequency measurement.

Manufacturer-declared absolute accuracy of the configured frequency monitoring threshold.

Repeat accuracy of frequency threshold detection under constant reference conditions.

Smallest manufacturer-supported adjustment increment for an absolute frequency threshold.

Smallest manufacturer-supported adjustment increment when the frequency threshold is specified relative to nominal frequency.

Minimum configurable rate-of-change-of-frequency threshold.

Maximum configurable rate-of-change-of-frequency threshold.

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.

AC frequency assigned to the product for normal operating conditions.

Rated external auxiliary supply voltage required for the product's active functions.

Type of current and source used for the product's auxiliary supply.

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.

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.

Electrical or physical monitoring functions provided by the device, such as overvalue, undervalue, window, phase, frequency, current, power, insulation, temperature or level monitoring.

Electrical measurement principle used for evaluation of the monitored signal, such as true RMS, RMS, average-value or direct-value measurement.

Physical or electrical input technology used for acquisition of the monitored quantity, for example direct voltage, direct current, current transformer, resistance sensor, thermistor or conductive probe.

Current type accepted by the measuring input, such as AC, DC or AC/DC.

Number of independent physical measuring inputs provided by the device.

Indicates whether the measuring input is galvanically isolated from the supply, output or other relevant circuits.

Indicates that the monitoring device derives its operating power directly from the measured circuit and does not require a separate auxiliary supply.

Minimum signal frequency accepted by the measuring circuit for the declared monitoring or measurement function.

Maximum signal frequency accepted by the measuring circuit for the declared monitoring or measurement function.

Manufacturer-declared electrical resistance of the measuring input where applicable.

Manufacturer-declared accuracy of the measured value under the specified reference conditions.

Manufacturer-declared accuracy or tolerance of the configured monitoring threshold.

Manufacturer-declared repeatability of switching, alarm or monitoring operation under unchanged reference conditions.

Manufacturer-declared change of measuring or switching accuracy per unit change of ambient temperature.

Number of independently usable monitoring, switching or alarm thresholds provided by the device.

Methods available for setting monitoring thresholds, such as potentiometer, rotary selector, DIP switch, buttons, software or NFC configuration.

Indicates that the intentional delay between detection of a monitored fault condition and output operation can be adjusted.

Minimum configurable response delay between fault detection and monitoring output operation.

Maximum configurable response delay between fault detection and monitoring output operation.

Fixed manufacturer-declared intentional response delay where the monitoring device does not provide an adjustable delay.

Time required for the monitoring function or output to recover after the monitored quantity has returned to the permissible range.

Maximum supply interruption duration that can be tolerated without loss of the relevant operating or monitoring state.

Indicates support for monitoring whether the measured value remains inside or outside a defined lower-to-upper threshold window.

Indicates that the upper and lower limits of a monitoring window can be configured independently.

Number of discrete measurement ranges supported by the measuring input.

Indicates that the measuring range can be selected or configured by the user.

Method used to select the active measuring range, such as automatic range selection, rotary control, DIP switch, wiring selection or software configuration.

Operating principle of the monitoring relay output with respect to normal and fault conditions, such as normally energized, normally de-energized or selectable behaviour.

Defines whether monitoring thresholds are specified as absolute measured values, percentages of a nominal value or another manufacturer-defined reference.

Manufacturer-declared time from application of the control signal until the relay reaches its operated switching state.

Manufacturer-declared time from removal of the control signal until the relay returns to its released switching state.

Manufacturer-declared duration of mechanical contact bounce following relay contact operation.

Mechanical structure of an individual switching contact system, for example single, double or bifurcated contact.

Electrical contact material or contact-material system used by the relay switching contacts.

Maximum manufacturer-declared voltage that may be switched by the relay-output contacts.

Maximum manufacturer-declared current that may be switched by the relay-output contacts.

Minimum manufacturer-declared switching voltage for reliable operation of the relay contact.

Minimum manufacturer-declared switching current for reliable relay-contact operation.

Maximum continuous current permitted through a closed relay contact under the manufacturer-declared conditions.

Maximum short-duration inrush current permitted through the relay switching contact.

Maximum AC switching voltage of the relay output contact.

Maximum DC switching voltage of the relay output contact.

Indicates whether the product can measure and provide electrical network frequency values.

Indicates whether one or more frequency-monitoring threshold values can be adjusted.

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.

Maximum intrinsic detection or response time for an underfrequency or overfrequency condition.

Minimum configurable absolute threshold for underfrequency monitoring.

Maximum configurable absolute threshold for underfrequency monitoring.

Minimum configurable absolute threshold for overfrequency monitoring.

Maximum configurable absolute threshold for overfrequency monitoring.

Minimum configurable underfrequency threshold expressed relative to the nominal or reference frequency.

Maximum configurable underfrequency threshold expressed relative to the nominal or reference frequency.

Minimum configurable overfrequency threshold expressed relative to the nominal or reference frequency.

Maximum configurable overfrequency threshold expressed relative to the nominal or reference frequency.

Minimum configurable absolute hysteresis for frequency threshold monitoring.

Maximum configurable absolute hysteresis for frequency threshold monitoring.

Total number of electrical connection points provided by the product.

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 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 conductor stripping length specified by the manufacturer.

Maximum conductor stripping length specified by the manufacturer.

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.

Method or operator action used to open, actuate, or prepare the clamping mechanism before conductor insertion.

Method used to release and remove a connected conductor from the connection point.

Indicates whether an applicable conductor can be inserted directly without first opening the clamping mechanism using a tool or actuator.

Indicates whether normal conductor connection can be performed without using a separate hand tool.

Indicates whether visual feedback is provided to confirm correct conductor connection or the intended operating state of the clamping mechanism.

Indicates whether haptic feedback is provided to confirm correct conductor connection or attainment of the intended operating state by the mechanism.

Indicates whether a separate tool is required to release the connected conductor.

Type, size, or designation of the tool declared by the manufacturer for actuating the conductor-release mechanism.

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

Drive geometry of the screw head used to clamp the conductor in the terminal block.

Size or designation of the screwdriver, bit, or other tool required to operate the terminal screw.

Minimum tightening torque of the terminal screw, bolt, or nut declared by the manufacturer where a permissible range is specified.

Maximum tightening torque of the terminal screw, bolt, or nut declared by the manufacturer where a permissible range is specified.

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.

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.

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

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.

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.

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.

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.

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

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.

Indicates whether one or more measured values can be stored, for example the latest, minimum, maximum, or a value associated with a fault event.

Indicates whether information about a fault condition, alarm, or protective operation can be retained after the cause of the event has disappeared.

Indicates whether the mode of storing or latching a fault condition can be configured.

Indicates whether an alarm or output state can automatically return to normal after the operating cause disappears, according to the product settings.

Indicates whether the delay can be adjusted during which a monitoring or protective function temporarily ignores the monitored condition after power-up or start.

Minimum available setting of the start-up delay for the monitoring or protective function.

Maximum available setting of the start-up delay for the monitoring or protective function.

Indicates whether the delay before an alarm or output state returns after the operating condition disappears can be adjusted.

Minimum available setting of the release delay for the alarm or output state.

Maximum available setting of the release delay for the alarm or output state.

Indicates whether the hysteresis between the operating threshold and release threshold can be adjusted.

Minimum available setting of switching or alarm hysteresis relative to the corresponding threshold.

Maximum available setting of switching or alarm hysteresis relative to the corresponding threshold.

Indicates whether an external wired input or external push-button is supported for initiating the specified TEST function.

Indicates whether an external wired input or external push-button is supported for performing the specified RESET function.

Indicates whether product settings can be protected against unauthorized modification by means of a specified mechanical, software, or password-based locking mechanism.

Electrical parameters and source conditions that the device can monitor when making transfer decisions.

Indicates whether the product has a local TEST button for the specified functional check of the device.

Indicates whether the product has a separate local RESET button for performing the specified reset function.

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 that the principal monitoring function can be selected or configured on the product, for example over-value, under-value or window monitoring.

Methods available for setting monitoring or switching threshold values.

Indicates that the delay between detection of the monitored fault condition and switching of the monitoring output can be adjusted.

Minimum configurable delay between detection of a monitored fault condition and output switching.

Maximum configurable delay between detection of a monitored fault condition and output switching.

Timing behaviour of the monitoring relay output with respect to appearance or disappearance of the monitored condition.

Indicates that the monitoring output can be configured between supported operating principles.

Indicates support for monitoring the rate of change of frequency (ROCOF, df/dt).

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 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 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.

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.