Modular Contactor
Modular electromechanical switching device intended for remote and automatic control of electrical loads.
A modular contactor is intended for repeated remote switching of electrical loads by means of an electromagnetic or electronically controlled actuator.
The device is typically mounted on a DIN rail in a distribution board and is designed for installation alongside other modular equipment.
The main contact system may contain normally open, normally closed, or changeover contacts. Its characteristics include operational currents and voltages, making and breaking capacity, switching frequency, timing characteristics, and power losses.
The control coil is characterized by its voltage and frequency range, operating and drop-out voltage, pull-in and holding power, current, and possible electronic control.
Some versions use wide-range coils, integrated switching-overvoltage suppression, or support an external suppression module.
Auxiliary contacts may be used for signalling, interlocking, and control circuits. Their operational voltages and currents, AC-15 and DC-13 utilization categories, minimum switching values, and operating frequency are specified separately.
The contactor may support additional front and side auxiliary contact blocks, manual operation, mirror contacts, or mechanically linked contacts.
For installation and wiring, the technologies of main, control, and auxiliary terminals, permissible conductor sizes, stripping lengths, and tightening torques are also important.
Selection criteria include load characteristics, utilization category, operational current and voltage, control-circuit parameters, contact arrangement, switching endurance, connection method, and declared compliance with applicable standards.
This subcategory includes modular electromechanical contactors for distribution boards, including versions with different numbers of main and auxiliary contacts, AC or DC coils, and additional modules.
Modular Contactor
General7
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.
Manufacturer-defined designation of the product frame size or construction size.
Dimensions3
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.
Capacity and Layout8
Actual electrical pole configuration of the product, including the number and function of switched poles.
Number of normally open (NO) auxiliary contacts installed in or supplied with the product.
Number of normally closed (NC) auxiliary contacts installed in or supplied with the product.
Number of changeover auxiliary contacts installed in or supplied with the product.
Number of normally open main power contacts or main switching poles.
Number of normally closed main power contacts or main switching poles.
Number of main changeover contact systems where the device construction provides main changeover contacts.
Number of normally closed auxiliary contacts declared by the manufacturer as mirror contacts.
Materials and Finish4
Primary material from which the product is manufactured.
Grade, alloy, class, or technical designation of the product's primary material.
Electrical contact material used for the main switching contacts.
Electrical contact material used for auxiliary switching contacts.
Mounting and Installation6
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.
Indicates that adjacent devices may be installed side by side without an additional manufacturer-required spacing element under the stated operating conditions.
Electrical Parameters85
Voltage value assigned to the product by the manufacturer for specified application conditions and characteristics.
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.
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 applied to the control circuit to perform the product's intended functions.
Type of current used in the product's control circuit.
Frequency of the alternating voltage or signal in the product's control circuit.
Current assigned to the product by the manufacturer for the declared operating and thermal conditions.
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.
Manufacturer-declared utilization category defining the load characteristics and switching conditions according to the applicable standard.
Conventional free-air thermal current Ith that the device can carry under specified steady-state conditions in free air.
Conventional enclosed thermal current Ithe that the device can carry under specified steady-state conditions inside the intended enclosure.
Declared number of mechanical operating cycles that the product can perform without electrical switching load.
Declared number of electrical load-switching cycles under the conditions specified by the manufacturer.
Manufacturer-declared opening time of the switching device or its contact mechanism under specified conditions.
Manufacturer-declared closing time of the switching device or its contact mechanism under specified conditions.
Minimum control-circuit supply voltage supported by the product or electronic coil.
Maximum control-circuit supply voltage supported by the product or electronic coil.
Minimum AC control-circuit frequency supported by the electromagnetic or electronic coil.
Maximum AC control-circuit frequency supported by the electromagnetic or electronic coil.
Minimum manufacturer-declared coil operating voltage expressed as a percentage of rated control voltage Uc.
Maximum manufacturer-declared coil operating voltage expressed as a percentage of rated control voltage Uc.
Minimum declared drop-out voltage of the contactor coil expressed as a percentage of rated control voltage Uc, where a range is specified.
Maximum declared drop-out voltage of the contactor coil expressed as a percentage of rated control voltage Uc.
Apparent power consumed by an AC-operated control coil during pull-in or inrush.
Apparent power consumed by an AC-operated control coil in the sealed or holding state.
Active or DC power consumed by the contactor control circuit during pull-in or inrush.
Active or DC power consumed by the contactor control circuit in the sealed or holding state.
Manufacturer-declared current drawn by the control coil during initial energization.
Manufacturer-declared current drawn by the control coil in the sealed or holding state.
Indicates that the electromagnetic actuator is controlled by integrated electronics rather than a conventional direct coil connection only.
Indicates that one coil or electronic control module supports a manufacturer-declared wide control-voltage range.
Indicates that suppression of the switching overvoltage generated by the control coil is integrated into the product.
Electrical suppression technology integrated in or explicitly supplied with the contactor control coil.
Conductor connection technology used specifically for the control-circuit terminals.
Minimum conductor cross-section accepted by the control-circuit terminal.
Maximum conductor cross-section accepted by the control-circuit terminal.
Manufacturer-declared tightening torque specifically for a screw-type control-circuit terminal.
Rated operational current Ie for utilization category AC-1 at the associated manufacturer-declared reference voltage.
Operational voltage associated with the stored AC-1 rated operational current.
Maximum manufacturer-declared current that the contact system can make under the stated operating conditions.
Maximum manufacturer-declared current that the contact system can break under the stated operating conditions.
Maximum manufacturer-declared mechanical operating frequency without regard to the electrical load.
Maximum manufacturer-declared switching frequency under the associated utilization category and load conditions.
Utilization category associated with the stored maximum electrical switching frequency.
Minimum manufacturer-declared time from coil energization to closing of a normally open contact.
Maximum manufacturer-declared time from coil energization to closing of a normally open contact.
Minimum manufacturer-declared time from coil energization to opening of a normally closed contact.
Maximum manufacturer-declared time from coil energization to opening of a normally closed contact.
Minimum manufacturer-declared time from coil de-energization to opening of a normally open contact.
Maximum manufacturer-declared time from coil de-energization to opening of a normally open contact.
Minimum manufacturer-declared time from coil de-energization to closing of a normally closed contact.
Maximum manufacturer-declared time from coil de-energization to closing of a normally closed contact.
Manufacturer-declared power dissipation per main pole at the stated AC-1 operating condition.
Maximum manufacturer-declared operational voltage Ue of the auxiliary contact circuit.
Rated insulation voltage Ui specifically declared for the auxiliary contact circuit.
Rated impulse withstand voltage Uimp specifically declared for the auxiliary contact circuit.
Minimum AC frequency applicable to the declared auxiliary-contact electrical ratings.
Maximum AC frequency applicable to the declared auxiliary-contact electrical ratings.
Conventional free-air thermal current Ith specifically declared for the auxiliary contacts.
Rated operational current Ie of the auxiliary contacts for utilization category AC-15 at the associated reference voltage.
Operational voltage associated with the stored AC-15 auxiliary-contact rated current.
Rated operational current Ie of the auxiliary contacts for utilization category DC-13 at the associated reference voltage.
Operational voltage associated with the stored DC-13 auxiliary-contact rated current.
Minimum switching voltage for which the manufacturer declares reliable auxiliary-contact operation.
Minimum switching current for which the manufacturer declares reliable auxiliary-contact operation.
Manufacturer-declared non-overlapping time between opening and closing of associated NO and NC auxiliary contacts.
Maximum manufacturer-declared electrical switching frequency of the auxiliary contacts under AC-15 conditions.
Maximum manufacturer-declared electrical switching frequency of the auxiliary contacts under DC-13 conditions.
Manufacturer-declared short-time withstand current of the auxiliary circuit for a duration of 1 second.
Manufacturer-declared short-time withstand current of the auxiliary circuit for a duration of 0.1 second.
Manufacturer-declared power dissipation per auxiliary-contact pole at the stated reference current.
Conductor connection technology used specifically for the main power terminals of the switching device.
Minimum conductor cross-section accepted by the main power terminal.
Maximum conductor cross-section accepted by the main power terminal.
Manufacturer-declared tightening torque specifically for screw, bolt or clamp-type main power terminals.
Minimum conductor stripping length specified for the main power terminal.
Maximum conductor stripping length specified for the main power terminal.
Conductor connection technology used specifically for auxiliary-contact terminals.
Minimum conductor cross-section accepted by an auxiliary-contact terminal.
Maximum conductor cross-section accepted by an auxiliary-contact terminal.
Manufacturer-declared tightening torque specifically for screw-type auxiliary-contact terminals.
Protection and Safety11
Indicates whether the product material is classified as halogen-free according to the characteristics declared by the manufacturer.
Indicates whether an external short-circuit protective device is required for the declared operation of the product.
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.
Maximum rated current of an external backup overcurrent protective device permitted by the manufacturer for use with the SPD.
Type of upstream overcurrent protective device permitted or required by the manufacturer for the declared conditional short-circuit withstand rating or SCCR.
Environmental Conditions17
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.
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.
Included Equipment2
Indicates whether documentation is included in the product's standard supply.
Indicates whether one or more auxiliary contacts are included in the standard product configuration.
Special Features11
Indicates whether the product supports installation or connection of specified auxiliary contacts.
Indicates that the applicable auxiliary contact elements are manufacturer-declared mechanically linked contacts.
Indicates that one or more normally closed auxiliary contacts are manufacturer-declared mirror contacts relative to the main normally open contacts.
Switching sequence between associated NO and NC auxiliary contacts.
Indicates that the contactor is designed for hum-free or substantially hum-free electromagnetic operation, particularly for noise-sensitive installations.
Indicates that the contactor provides a local manual override mechanism in addition to electrical coil operation.
Positions or modes available on the local manual override mechanism.
Indicates compatibility with an auxiliary contact block mounted on the front of the contactor.
Indicates compatibility with an auxiliary contact block mounted on the side of the contactor.
Indicates compatibility with an external or add-on suppression module for limiting switching overvoltage generated by the control coil.
Indicates that the electromagnetic control coil can be replaced independently of the complete contactor.
Standards and Compliance25
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.
Compliance with IEC 60947-4-1 requirements applicable to electromechanical contactors and motor-starters.
Compliance with IEC 61095 requirements for electromechanical contactors intended for household and similar purposes.
Compliance with UL 60947-4-1 requirements applicable to contactors and motor-starters.
Compliance with applicable IEC 60947-5-1 requirements for control-circuit devices and switching elements.
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.