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  • New item   LP2K reversing mini contactor | 3P | 9A | 4kW | 24VDC coil | 1NO auxiliary contact | for electric motors and control circuits
    New item   LP2K reversing mini contactor | 3P | 9A | 4kW | 24VDC coil | 1NO auxiliary contact | for electric motors and control circuits 1

    LP2K reversing mini contactor | 3P | 9A | 4kW | 24VDC coil | 1NO auxiliary contact | for electric motors and control circuits

    Code: LP2K0910BD
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    Price 65.79 € VAT incl.
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    Reversing mini contactor designed for changing the rotation direction of three-phase electric motors, as well as for control and automation circuits. The device consists of two interconnected contactors that enable safe switching of motor phases and selection of forward or reverse motor rotation. The contactor has 3 poles, a rated current of 9A, a power rating of 4kW, a 24VDC control coil, and 1 normally open auxiliary contact. 
  • Product description

    LP2K Reversing Mini Contactor – 3P, 9A, 4kW, 24VDC Coil, 1NO Auxiliary Contact

    Reversing mini contactor, designed for changing the direction of rotation of three-phase electric motors, as well as for control and automation circuits. The device consists of two interconnected contactors that allow for safe switching of motor phases, enabling forward or reverse motor operation. The contactor features 3 poles, a 9A rated current, 4kW power, a 24VDC control coil, and 1 normally open (NO) auxiliary contact.

    Key Concept:
    A reversing contactor is used when it is necessary not only to start or stop a three-phase motor but also to change its direction of rotation. It is suitable for conveyors, gates, lifting mechanisms, fans, pumps, machine tools, and other automation systems where forward and reverse motor operation is required.
    Number of Poles
    3P
    Rated Current
    9A
    Motor Power
    4kW
    Control Coil
    24VDC

    Operating Principle

    The reversing contactor is composed of two contactors: one designed for motor operation in one direction, and the other for the opposite direction. By changing the phase sequence, the rotation direction of the three-phase electric motor is reversed.

    Contactors in a reversing system must be controlled so that both are not energized simultaneously. Therefore, reversing contactors utilize mechanical and/or electrical interlocking to prevent a phase-to-phase short circuit and to protect the motor control circuit.

    When is a reversing contactor needed?
    It is required when a motor must operate in both directions: for example, to raise and lower a mechanism, open and close gates, change the direction of a conveyor, or control a reversing fan or machine tool mechanism.

    Technical Parameters

    Product Type Reversing Mini Contactor
    Series LP2K  
    Item Code LP2K0910BD
    Number of Main Poles 3P
    Rated Current 9A
    Nominal Motor Power 4kW
    Control Coil Voltage 24VDC
    Auxiliary Contact 1NO Normally Open
    Application Reversing control of three-phase motors
    Weight 0.443 kg

    Main Functions

    • Motor rotation direction change – allows switching the three-phase motor to operate in forward or reverse directions.
    • Three-phase motor control – designed for control circuits of 3-phase electric motors.
    • 24VDC control coil – suitable for control schemes using 24VDC.
    • 1NO auxiliary contact – can be used for signaling, self-holding circuits, PLC input, or other automation functions.
    • Compact format – convenient for use in smaller control cabinets, automation panels, and equipment control systems.

    Where is it used?

    • Automatic gates and barriers – for controlling opening and closing mechanisms.
    • Conveyors – for changing movement direction according to production process needs.
    • Lifting and lowering mechanisms – hoists, winches, platforms, and other equipment.
    • Machine tools and workshops – for mechanisms requiring reversing operation.
    • Pump and fan control systems – where direction changes are technologically required.
    • Industrial control cabinets – in motor and automation circuits.

    Practical Installation Example

    For example, a reversing mini contactor can be used in a three-phase motor control cabinet intended for a small conveyor. One control button starts the motor in the forward direction, and another starts it in reverse. The contactor's interlocking system prevents both directions from being engaged simultaneously.

    The additional 1NO contact can be used for an indicator light, PLC input, or a self-holding circuit that keeps the contactor engaged after releasing the control button.

    Usage According to Needs

    Electrician: A compact reversing contactor suitable for installation in control cabinets and equipment automation schemes. It is important to correctly connect the phase sequence, control coil, interlocking circuit, and motor protection.

    Engineer/Designer: A suitable solution for designing lower-power reversing motor control systems. When selecting a contactor, it is essential to evaluate motor power, operating current, starting conditions, load category, and control voltage.

    Industry and Maintenance Specialist: Can be used for reversing control of production equipment, gates, conveyors, hoists, fans, and other mechanisms, as well as for repairing existing contactor systems.

    Pros

    • Reversing control – motor direction can be changed forward and backward.
    • 3-pole construction – designed for three-phase motor control.
    • 9A rated current – suitable for various control circuits for smaller motors.
    • 4kW nominal power – a practical solution for many industrial mechanisms.
    • 1NO auxiliary contact – suitable for signaling and automation functions.
    • Compact size – convenient for use in smaller control cabinets.
    • Low weight – only 0.443 kg.

    Cons / Limitations

    • Designed only for reversing control – for simple motor starting, a single contactor may be sufficient.
    • Requires proper control scheme – it is essential to ensure that both directions are not engaged simultaneously.
    • Motor protection required – the contactor does not replace a thermal overload relay, motor circuit breaker, or automatic switch.
    • Power depends on operating conditions – before installation, check specific motor parameters and load type.

    Safety and Installation Notes

    The reversing contactor must be installed and connected according to the wiring diagram, manufacturer documentation, and current electrical safety regulations. An incorrectly connected reversing scheme can cause a short circuit, motor damage, or equipment failure.

    • Installation must be performed by a qualified electrician.
    • Before installation work, turn off the power supply and check that there is no voltage in the circuit.
    • Must use proper mechanical or electrical interlocking to ensure both contactors are not engaged simultaneously.
    • Appropriate overload and short-circuit protection must be provided in the motor circuit.
    • Before selecting a contactor, check the motor's rated current, power, network voltage, and load category.
    • The control coil must only be connected to a 24VDC control voltage.

    Quick Selection Guide

    The Reversing Mini Contactor is suitable when you need to control a three-phase electric motor in reverse and the control scheme uses a 24VDC coil. This is a practical solution for smaller motors, gate mechanisms, conveyors, lifting equipment, and various automation systems.

    Control
    Reversing
    Poles
    3P
    Control Coil
    24VDC
    Auxiliary Contact
    1NO
    Suitable when you need to:
    • change the direction of a three-phase motor;
    • control the motor in forward and backward directions;
    • use 24VDC control voltage;
    • control circuits up to 9A rated current;
    • use an additional 1NO contact for signaling or automation.
    Check before ordering:
    • whether the motor rated current and power match the contactor parameters;
    • whether a 24VDC coil is specifically required;
    • whether an 1NO auxiliary contact is needed;
    • whether motor protection is provided in the control cabinet;
    • whether additional control buttons, relays, or signal lights are required for the reversing scheme.
    Important Reminder:
    The reversing contactor must be connected according to the correct reversing motor control diagram. Improper connection of phases or the interlocking circuit can damage the contactor, motor, or the entire control system.

    FAQ – Frequently Asked Questions

    What is a reversing contactor?
    It is a contactor or a combination of contactors intended for changing the rotation direction of a three-phase electric motor. It allows the motor to operate in forward and reverse directions.
    What does 3P mean?
    3P means that the contactor has three main poles and is intended for controlling three-phase electric circuits and three-phase motors.
    What does 1NO mean?
    1NO means one normally open auxiliary contact. It can be used for signaling, self-holding circuits, indication, or as an input for automation equipment.
    Is this contactor suitable for simple motor starting?
    Yes, but if the motor does not need to change its rotation direction, it is usually more economical and simpler to use one standard contactor with appropriate motor protection.
    Does the contactor protect the motor from overload?
    No. The contactor is intended for starting, stopping, and reversing the motor. For overload protection, a proper thermal relay, motor circuit breaker, or other protective equipment must be used.

    Compact Reversing Contactor for Three-Phase Motor Control

    The reversing mini contactor is a practical choice for motor control systems requiring rotation direction changes. It is suitable for gates, conveyors, hoists, machine tools, fans, and other industrial equipment.

    Due to its 3-pole construction, 9A rated current, 4kW power, 24VDC coil, and 1NO auxiliary contact, this model can be conveniently integrated into automation, electric motor, and control cabinet systems.

    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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