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  • New item   Mini contactor | 3P | 20A | 4kW | 220-240VAC | 3NO | ABB | B6-30-10-80
    New item   Mini contactor | 3P | 20A | 4kW | 220-240VAC | 3NO | ABB | B6-30-10-80 1
    New item   Mini contactor | 3P | 20A | 4kW | 220-240VAC | 3NO | ABB | B6-30-10-80 2

    Mini contactor | 3P | 20A | 4kW | 220-240VAC | 3NO | ABB | B6-30-10-80

    Code: B6-30-10-80
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    ABB B6-30-10-80 – a compact three-phase mini contactor with three main normally open contacts and one auxiliary normally open contact. It is designed for controlling single-phase and three-phase loads, control signals and electric motors where reliable operation, compact dimensions and simple installation on a DIN rail or directly on a wall are important. 

  • Product description
    Warning: the control coil is rated for the 220–240 V AC range only – not 400 V. Connecting any other voltage – risk of damaging the device. Installation must be carried out by a competent specialist.

    ABB B6-30-10-80 mini contactor – 3P, 20A, 4kW, 220-240V AC coil, 3NO + 1NO, DIN

    ABB B6-30-10-80 – a compact three-phase mini contactor with three main normally open contacts and one auxiliary normally open contact. It is designed for controlling single-phase and three-phase loads, control signals and electric motors where reliable operation, compact dimensions and simple installation on a DIN rail or directly on a wall are important.

    Main idea:
    This mini contactor is designed for three-phase motors up to 4 kW at 400V in AC-3 duty and for loads up to 20A in AC-1 duty. Thanks to its compact construction, silent coil, mechanical position indication and DIN mounting option, it is suitable for residential, commercial and industrial applications.
    Main contacts
    3NO / 3P
    Motor power AC-3
    Up to 4 kW / 400V
    Rated current AC-1
    Up to 20A
    Coil voltage
    220-240V AC

    Operating principle

    The contactor is controlled via a 220-240V AC coil. When voltage is applied to the coil, the electromagnet pulls in the contact system and closes the three main normally open contacts. This switches on the connected load – for example, a three-phase motor, pump, fan, compressor, heating equipment or another electrical circuit.

    When the coil supply is interrupted, the contactor returns to its initial state and the main contacts open. The auxiliary 1NO contact can be used in self-holding, status indication, signalling or PLC / automation control circuits.

    When is a mini contactor used?
    A mini contactor is selected when an electrical load must be controlled reliably, but there is limited space in the electrical cabinet. The ABB B6 series is suitable for control cabinets, smaller machines, pumps, fans, heating systems, automated circuits and other compact installations.

    Technical parameters

    Manufacturer ABB
    Model B6-30-10-80
    Product type Mini contactor
    Number of poles 3P
    Main contacts NO 3
    Main contacts NC 0
    Auxiliary contacts NO 1
    Auxiliary contacts NC 0
    Coil control voltage Uc 220-240V AC
    Coil operating limits 0.85 ... 1.1 x Uc when ambient temperature ≤ +55°C
    Coil power consumption Average holding and pull-in value: 3.5 VA at 50 Hz
    Rated thermal current Ith 20A
    Rated current AC-1, 220/240V, +40°C 20A
    Rated current AC-1, 220/240V, +55°C 16A
    Rated current AC-1, 380/440V, +40°C 20A
    Rated current AC-1, 380/440V, +55°C 16A
    Rated current AC-3, 230V, +55°C 9A
    Rated current AC-3, 400V, +55°C 9A
    Rated power AC-3, 400V, 3-phase 4 kW
    Rated power AC-3, 230V, 3-phase 2.2 kW
    Rated power AC-3, 500V, 3-phase 4 kW
    Rated power AC-3, 690V, 3-phase 3 kW
    Rated operational voltage, main circuit Up to 690V AC / up to 220V DC
    Rated operational voltage, auxiliary circuit Up to 690V AC / up to 250V DC
    Rated insulation voltage Ui 690V
    Rated impulse withstand voltage Uimp 6 kV, main and auxiliary circuit
    Rated short-time withstand current Icw 64A / 10 s at +40°C
    Maximum electrical switching frequency AC-1 300 cycles per hour
    Maximum electrical switching frequency AC-3 600 cycles per hour
    Mechanical durability 10,000,000 cycles
    Terminal type Screw terminals
    Conductor connection Flexible 1-2.5 mm², solid 1-4 mm², with or without ferrules
    Wire stripping length 9 mm
    Tightening torque 0.8-1.1 N·m
    Terminal protection class IP20
    Mounting DIN rail TH35-7.5 or TH35-15 according to IEC 60715; wall mounting possible
    Operating ambient temperature -25°C ... +55°C
    Storage temperature -40°C ... +80°C
    Maximum mounting altitude 2000 m above sea level
    Shock resistance 15g, 11 ms pulse according to IEC 60068-2-27
    Vibration resistance 5g, 5–150 Hz
    Standards IEC/EN 60947-1, IEC/EN 60947-4-1, IEC/EN 60947-5-1, UL 60947-1, UL 60947-4-1, IEC 60335-2-40 A2L

    Main functions

    • Three-phase load control – suitable for 3-phase motors, pumps, fans and other loads.
    • Up to 4 kW in AC-3 duty at 400V – for controlling small and medium three-phase motors.
    • Up to 20A in AC-1 duty – for resistive and general loads.
    • 1 auxiliary NO contact – for self-holding, indication, signalling or automation functions.
    • Silent coil – reduced noise during control operation.
    • Contactor position indication – for easier visual device status monitoring.
    • DIN or wall mounting – flexible integration in electrical cabinets and equipment.
    • Screw terminals – for reliable conductor connection.
    • Compact mini contactor design – for electrical cabinets with limited space.

    Where is it used?

    • In electrical control cabinets – for controlling motors, heating, ventilation and automatic systems.
    • In pump systems – for switching water, heating, drainage and process pumps.
    • In ventilation equipment – for fans, duct units and air handling systems.
    • In compressors and smaller mechanisms – for electric motor control.
    • In commercial buildings – for automatic control of lighting, heating, ventilation and other loads.
    • In residential buildings – for heat pumps, boilers, ventilation, pumps and other controlled loads.
    • In industrial systems – for switching lower-power equipment and control signals.

    Practical usage example

    For example, the contactor is installed in an electrical panel to control a three-phase fan or pump. The three main contacts are connected between the circuit breaker and the motor, while the coil is controlled via a switch, thermostat, pressure relay, timer, PLC controller or another automation signal.

    The auxiliary 1NO contact can be used for contactor self-holding or for a light indication signal. In this way, the control system can switch the load on and off according to the set operating mode, safety circuit or external automation signal.

    Use according to needs

    For electricians: a convenient mini contactor for standard DIN mounting, with screw terminals, a 220–240V AC coil and an auxiliary 1NO contact. Suitable when a compact solution is needed in smaller electrical cabinets.

    For automation specialists: can be used in PLC, timer, thermostat, pressure relay or other control signal circuits. The auxiliary contact is useful for self-holding and status signalling functions.

    For industrial specialists: suitable for controlling smaller motors, pumps, fans, compressors and other equipment when the load parameters meet the AC-1 or AC-3 category limits.

    For building maintenance specialists: can be used in control cabinets for heating, ventilation, water supply, lighting and other building technical systems.

    Advantages

    • Compact mini contactor – suitable when cabinet space is limited.
    • 3P main contacts – for three-phase load and motor control.
    • 1 auxiliary NO contact – for self-holding, status indication and automation.
    • Up to 4 kW at 400V AC-3 – suitable for smaller three-phase motors.
    • Up to 20A AC-1 – for general loads and control solutions.
    • 220-240V AC coil – convenient for standard control circuits.
    • DIN rail and wall mounting option.
    • Silent coil and position indication – more convenient everyday use.
    • 10 million mechanical cycles – for long service life.
    • ABB manufacturer – a widely used brand in industrial automation and electrical equipment.

    Disadvantages / limitations

    • Designed for motors up to 4 kW at 400V AC-3 – higher-power motors require a larger contactor.
    • The coil operates only with 220-240V AC – not suitable for 24V, 48V or other coil voltages unless the correct model is selected.
    • Terminal protection IP20 – the contactor must be installed in a suitable electrical cabinet or protected enclosure.
    • No integrated thermal motor protection – motors require a separate motor protection device or thermal overload relay according to the circuit design.
    • Parameters depend on the load category – AC-1 and AC-3 values are not the same, so the contactor must be selected according to the actual load.

    Safety and installation notes

    The contactor must be selected according to the actual load, motor power, voltage, control coil voltage and switching category. Before installation, it is necessary to check whether the B6-30-10-80 model with a 220-240V AC coil matches the voltage of the specific control system.

    • Installation must be carried out by a qualified electrician.
    • Before work, the electrical power supply must be disconnected.
    • Motor power must be evaluated according to the AC-3 category, not only according to the contactor AC-1 current.
    • Check the coil voltage – this model requires 220–240V AC control voltage.
    • In motor circuits, use a suitable circuit breaker, fuses and thermal protection.
    • Connect conductors according to the specified cross-section and tightening torque of 0.8-1.1 N·m.
    • The terminals must be protected against direct contact, as the specified protection class is IP20.
    • Before starting the system, check the wiring diagram of the main contacts, coil and auxiliary contact.

    Quick selection guide

    Choose the ABB B6-30-10-80 mini contactor when a compact three-phase contactor with a 220–240V AC coil, three main NO contacts and one auxiliary NO contact is required. It is suitable for three-phase motors up to 4 kW at 400V in AC-3 duty and for loads up to 20A in AC-1 duty.

    Main contacts
    3NO / 3P
    AC-3 at 400V
    9A / 4 kW
    AC-1 at 400V
    Up to 20A
    Coil
    220-240V AC
    Suitable when you need:
    • to control a three-phase motor up to 4 kW at 400V;
    • a compact contactor for a smaller electrical cabinet;
    • a 220–240V AC control coil;
    • an auxiliary 1NO contact for self-holding or signalling;
    • a DIN rail or wall mounting solution.
    Check before ordering:
    • whether a 220-240V AC coil is required;
    • whether the load category is AC-1, AC-3, AC-15 or DC-13;
    • whether the motor power does not exceed 4 kW at 400V in AC-3 duty;
    • whether the 3NO + 1NO contact configuration is sufficient;
    • whether an additional thermal relay and motor protection are required;
    • whether the conductor cross-section matches the contactor terminal capacity.
    Important reminder:
    The contactor 20A value is specified for the AC-1 category. For electric motors, the contactor must be selected according to the AC-3 category, where at 400V the rated current is 9A and the rated motor power is up to 4 kW.

    FAQ – frequently asked questions

    Is this contactor suitable for a 4 kW three-phase motor?
    Yes. At 400V in the AC-3 category, ABB B6-30-10-80 can control a three-phase motor up to 4 kW, provided its rated current does not exceed 9A.
    What does 3NO + 1NO mean?
    It means three main normally open contacts for a three-phase load and one auxiliary normally open contact for a control or signalling circuit.
    What coil voltage is required for this model?
    This model requires 220-240V AC control voltage. Before ordering, it is necessary to check whether your control circuit has this voltage.
    Does the contactor have thermal motor protection?
    No. The contactor is designed for switching the circuit on and off. For motor overload protection, a separate thermal overload relay, motor protection circuit breaker or another suitable protection solution must be used.
    Can it be mounted on a DIN rail?
    Yes. The contactor can be mounted on a TH35-7.5 or TH35-15 DIN rail according to IEC 60715. Wall mounting is also possible.
    What conductor cross-sections can be connected?
    For flexible conductors, the specified range is 1-2.5 mm², and for solid conductors – 1-4 mm². Wire selection must be made according to the load, installation method and applicable requirements.

    Compact ABB contactor for reliable motor and load control

    ABB B6-30-10-80 mini contactor is a reliable solution for controlling three-phase motors, pumps, fans, compressors, heating equipment and various automatic loads where compactness and clear installation in the electrical cabinet are important.

    Thanks to 3P main contacts, 1NO auxiliary contact, 220-240V AC coil, 4 kW AC-3 power at 400V, DIN mounting, silent coil and long mechanical durability, this contactor is suitable for electrical control solutions in residential, commercial and industrial buildings.

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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