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  • New item   Industrial Magnetic Contactor | 3P | 25 A (AC-3) | 6 kW/230 V | 1 NO | Coil 110 V AC | IEC/EN 60947-4-1 | Promfactor Baltic FC20025110
    New item   Industrial Magnetic Contactor | 3P | 25 A (AC-3) | 6 kW/230 V | 1 NO | Coil 110 V AC | IEC/EN 60947-4-1 | Promfactor Baltic FC20025110 1
    New item   Industrial Magnetic Contactor | 3P | 25 A (AC-3) | 6 kW/230 V | 1 NO | Coil 110 V AC | IEC/EN 60947-4-1 | Promfactor Baltic FC20025110 2

    Industrial Magnetic Contactor | 3P | 25 A (AC-3) | 6 kW/230 V | 1 NO | Coil 110 V AC | IEC/EN 60947-4-1 | Promfactor Baltic FC20025110

    Code: FC20025110
    Barcode: 4779040158137
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    FC20025110 is a three-phase electromagnetic contactor designed for switching electrical circuits on and off in industrial, administrative and commercial premises as well as civil construction sites. It is used to control motors, heating systems and other loads where frequent, reliable circuit switching is needed without manual intervention. This version's control coil operates on 110 V AC – a low safety voltage – so the contactor is suitable for environments where a 230 V control circuit is undesirable or prohibited.

  • Product description

    Industrial Magnetic Contactor | 3P | 25 A (AC-3) | 6 kW/230 V | 1 NO | Coil 110 V AC | IEC/EN 60947-4-1 | Promfactor Baltic FC20025110

    FC20025110 is a three-phase electromagnetic contactor designed for switching electrical circuits on and off in industrial, administrative and commercial premises as well as civil construction sites. It is used to control motors, heating systems and other loads where frequent, reliable circuit switching is needed without manual intervention. This version's control coil operates on 110 V AC – a low safety voltage – so the contactor is suitable for environments where a 230 V control circuit is undesirable or prohibited.

    Warning: the control coil is rated for a 110 V AC supply only – not 230 V and not 400 V. Connecting any other voltage – risk of damaging the device. Installation must be carried out by a competent specialist.
    Key idea:
    The choice of contactor is determined not only by the rated current of the main contacts but also by the control coil voltage – it determines which circuit (a relay, pushbutton, PLC output, safety sensor) can drive it. The FC20025110 has a 110 V AC coil, so the control circuit can be isolated from the 230/400 V mains and kept at a safe low voltage. The same FC2 series with 110 V and 230 V coils is sold as separate models – the 110 V version is intended for sites that already have a 110 V control network.
    Rated current (Ie, AC-3)
    25 A
    Control coil voltage (Uc)
    110 V AC
    Auxiliary contact
    1 NO
    Standard
    IEC/EN 60947-4-1

    Operating principle

    The contactor engages when control voltage is applied to the 110 V AC coil: the electromagnet pulls in the movable armature, which closes the three main power contacts and the auxiliary 1 NO contact at the same time. The coil's operating voltage may vary within 85–100% of Uc and pull-in will still occur – this matters when the control circuit is long or fed from a low-power transformer where voltage can sag somewhat. When the control signal is removed, a spring retracts the armature and all contacts open.

    The coil behaves differently during pull-in and holding: at the moment of pull-in the coil draws about 122 VA – this power is needed to pull in the armature against mechanical resistance and the contact springs. Once the contacts are closed, the magnetic circuit closes and holding the armature requires considerably less energy – about 12 VA. This difference is characteristic of all AC-coil contactors. Practical takeaway: without voltage drop, the control transformer or controller output must be able to withstand the pull-in power (122 VA), not just the holding power of 12 VA – otherwise the coil may fail to engage or "chatter".

    What makes the FC20025110 useful?
    The 110 V AC coil allows the power circuit to be controlled from a safe low-voltage loop, isolated from the 230/400/690 V main contacts. This is useful in machine tools, agricultural and mining equipment, on ships or in damp premises, where the control panel pushbutton or handheld control circuit must be at SELV/PELV level rather than 230 V.

    Technical specifications

    Model FC20025110
    Product type Industrial magnetic contactor (electromechanical starter)
    Rated current (Ie, AC-3) 25 A
    Control coil voltage (Uc) 110 V AC
    Auxiliary contact 1 NO
    Standard IEC/EN 60947-4-1
    Rated operational contact voltage (Ue) 230/400/690 V AC
    Conventional thermal current (Ith, AC-1) 45 A
    Rated power (AC-3) 230 V – 6 kW, 400 V – 11 kW, 690 V – 15 kW
    Insulation voltage (Ui) 690 V
    Coil operating voltage range 85–100% Uc
    Coil power (pull-in / holding) 122 VA / 12 VA
    Permitted switching frequency 1200 cycles/h
    Endurance (AC-3) electrical – 1 million operations, mechanical – 10 million operations
    Main poles 3P
    Protection rating IP20

    Key features

    • Three-phase power switching – the 3P contacts switch the entire load on and off in a single operation.
    • 110 V AC control coil – allows control from a safe low-voltage circuit, isolated from the 230/400 V mains.
    • 1 NO auxiliary contact – signals the contactor's status to the control system or interlocks another circuit.
    • Frequent switching – up to 1200 cycles per hour, suitable for automated, repetitive control.
    • Long mechanical service life – up to 10 million mechanical operations without part replacement.
    • Add-on equipment connection – additional auxiliary contact blocks and a thermal overload relay can be fitted.

    Accessories and compatible equipment

    The FC2 series contactor is a base onto which the entire starting circuit is assembled – accessories mount directly on the housing, keeping the panel compact.

    • Auxiliary contact blocks NO/NC – mounted on the side or on top of the contactor; used for signalling (status lamp, PLC input), interlocking and the self-holding circuit when the factory 1 NO contact is not enough. Blocks from the same FC series fit.
    • Thermal overload relay – clips directly onto the contactor's power terminals, protects the motor against overload and phase loss; selected according to the motor's rated current (for a 25 A contactor – a relay with a range covering the motor current, e.g. 12–18 A or 17–25 A).
    • Timer relay – delays switching on or off (ON-delay / OFF-delay), used for star-delta starting, fan run-on time, and sequencing of multiple devices; mounted on the contactor or on a DIN rail.
    • Coil surge suppressor (RC suppressor or varistor) – suppresses the coil's switch-off surge, protecting pushbuttons, timer relays and PLC outputs.
    • Mechanical and electrical interlock – for two contactors in a reversing (forward–reverse) starter, so both never engage at the same time.
    • Control elements – 22 mm START (green, NO) and STOP (red, NC) pushbuttons, a phase monitoring relay (phase sequence, loss, asymmetry), a 3P circuit breaker or a motor protection circuit breaker for short-circuit protection.

    How does it differ from interposing relays, modular contactors and solid-state relays? All four devices switch circuits, but they are designed for different loads – choosing the wrong component means it either burns out or fails to operate when needed.

    • Industrial contactor (this product) – designed for motors and other inductive loads (AC-3): withstands motor starting current several times higher than rated and safely interrupts it; accessories mount on the housing (contact blocks, thermal overload relay, timer relay). Choose it for controlling a motor, pump, compressor, fan or crane.
    • Interposing relay – small contacts (5–16 A), used to transmit control signals and to provide galvanic isolation between PLC outputs and the power circuit. It cannot switch motors directly – its contacts would weld shut from the inrush current. Choose it for signal repeating, interlocks and automation logic circuits.
    • Modular contactor – a DIN-rail housing like a circuit breaker, designed for resistive loads (AC-1/AC-7a): heating, lighting, water heaters, ventilation. Quiet and compact, but without an accessory system or a thermal overload relay; not suitable for frequent motor starting. Choose it for a residential or apartment distribution board.
    • Solid-state relay (SSR) – no moving parts, suitable for millions of cycles and fast switching (PID temperature control, PWM), silent. It heats up – a heatsink is required – and when open it provides no galvanic isolation, so it cannot substitute for a safety switch. Choose it for heating elements and frequent cyclic control circuits.

    Where is it used?

    • Motor starting and stopping circuits in industrial installations
    • Control of heating systems and heating elements
    • Automated production lines where switching occurs without manual intervention
    • Machine tools and agricultural or mining equipment with low-voltage control circuits
    • Ships and damp premises requiring SELV/PELV control voltage
    • Commercial and administrative facilities – control of ventilation, lighting or pumps
    • Dry or moderately humid premises without strong vibration or shock

    Use according to need

    For residential users.
    This contactor is intended for industrial or commercial environments, not for residential distribution board circuits – choosing it makes sense only when the site already has a 110 V AC control circuit, for example in a separate utility building with a pump or heating element.
    For companies and industry.
    In industrial and automated systems, the 110 V coil allows control panels, pushbuttons and sensors to be kept at low voltage, and the control station remains in a low-voltage circuit. Suitable for motors, heating systems and other loads up to 25 A (AC-3).
    For electricians / engineers.
    When selecting a contactor for motor control, it must be used together with a thermal overload relay or motor protection device – the contactor withstands the starting current, but does not protect the motor from sustained overload. Also check that the control transformer's secondary winding matches 110 V AC and can briefly supply the 122 VA pull-in power.

    Practical application

    A production workshop has a 7.5 kW pump motor (400 V, ~16 A). The panel already has a 110 V AC control network that powers the pushbutton stations. The FC20025110 is connected between the circuit breaker and the motor; its coil is controlled by START/STOP pushbuttons via a self-holding circuit that uses the factory 1 NO contact. A 12–18 A thermal overload relay is clipped onto the contactor's power terminals: if the motor is overloaded, its NC contact (95–96) breaks the coil circuit and the contactor drops out.

    Pros

    • Safe control circuit – the 110 V AC coil allows control from a low, safe voltage.
    • High reliability – up to 10 million mechanical and 1 million electrical operations (AC-3).
    • Compact – easy to mount and to connect additional equipment.
    • Built for frequent switching – 1200 cycles per hour.
    • Versatile main circuit compatibility – suitable for 230/400/690 V systems.
    • Expandable – accepts additional auxiliary contact blocks and a thermal overload relay.

    Cons / limitations

    • No built-in overvoltage protection – additional protection is recommended for the coil.
    • Not suitable for extreme environments (high humidity, vibration, shock beyond permitted limits).
    • The 110 V AC coil requires a separate low-voltage source or transformer – the 230 V mains alone is not enough.
    • The contactor alone does not protect the motor from sustained overload – an additional thermal overload relay is required.
    • Protection rating IP20 – an enclosed panel is required, the contactor is not designed for open outdoor mounting.

    Safety and installation notes

    • Before installation, disconnect power from both the main and control circuits.
    • Use only a 110 V AC control source – a higher voltage can burn out the coil, a lower one may prevent pull-in.
    • For motor circuits, additionally install a thermal overload relay between the contactor and the motor – the contactor itself does not protect the motor from overload.
    • Tighten terminals to the torque specified by the manufacturer, and recheck after the first load cycle.
    • Install in an enclosed panel – protection rating IP20 is not suited to dusty or damp open environments.
    • Check the contacts regularly after prolonged intensive use – frequent switching at high currents gradually wears the contact surfaces.

    Quick selection guide

    Rated current (Ie, AC-3)
    25 A
    Control coil voltage (Uc)
    110 V AC
    Auxiliary contact
    1 NO
    Standard
    IEC/EN 60947-4-1
    Suitable when you need:
    • to control a 230/400/690 V circuit up to 25 A (AC-3) from a safe 110 V AC control circuit;
    • frequent automatic switching (up to 1200 cycles/h) for a motor, heating or lighting circuit;
    • an additional NO contact for status signalling or an interlock circuit.
    Check before use:
    • whether the control circuit really has a 110 V AC source, not 230 V or 110 V;
    • whether the load current and power match 25 A / the corresponding kW rating per Ue;
    • whether an additional thermal overload relay is provided for the motor circuit;
    • whether the installation location is enclosed and matches the IP20 protection level.
    Important reminder:
    Coil – 110 V AC only, NOT 230 V and NOT 400 V. Connecting the control circuit to 230 V or 400 V burns out the coil within a few seconds – the most common failure of this model and not covered by warranty. Check the control supply voltage before wiring. The contactor does not protect the motor from overload – a thermal overload relay or motor protection is required.

    FAQ

    What is the difference between AC-1 and AC-3 categories?
    AC-1 applies to non-inductive or weakly inductive loads (e.g. heating elements), where the making and breaking current is close to the operating current; this corresponds to Ith=45 A. AC-3 applies to starting induction motors, where the breaking current can be several times the operating current due to motor inertia; for this reason the rated current is lower, 25 A, since it is harder for the contactor to interrupt a large inductive current.
    Why is the coil's pull-in power (122 VA) higher than its holding power (12 VA)?
    Pulling in the armature requires overcoming spring force and the air gap in the magnetic circuit, so more energy is briefly consumed. Once the contacts are closed, the magnetic circuit closes and less power is needed to hold the armature.
    Why was a 110 V AC coil chosen instead of 230 V?
    110 V AC is a safe low control voltage (SELV/PELV), allowing the control circuit (pushbuttons, sensors, control stations) to be kept safe for personnel working with it – this matters in damp, marine or agricultural environments.
    Does the contactor protect the motor from overload?
    No. The contactor only performs the switching function; sustained overcurrent requires an additional thermal overload relay connected between the contactor and the motor.
    Can additional contact blocks be fitted?
    Yes, the FC20025110 supports the addition of extra equipment – contact blocks and thermal overload relays.
    What is the contactor's protection rating?
    IP20, so it must be installed in an enclosed electrical panel.

    Industrial Magnetic Contactor | 3P

    The FC20025110 is a three-phase industrial magnetic contactor rated 25 A (AC-3), designed to control 230/400/690 V circuits with a 110 V AC control coil and a 1 NO auxiliary contact. It complies with IEC/EN 60947-4-1, is rated for up to 1200 switching cycles/h, and has a service life of up to 10 million mechanical operations. Used with an additional thermal overload relay for motor protection, its low-voltage coil allows it to be controlled from a safe SELV/PELV circuit in machine tools, agricultural and mining equipment, on ships or in damp premises.

    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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