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    AC Current Sensing Switch, 0.2A-30A, NO/NC

    5 out of 5 based on 2 reviews | Write a review
    $44.31
    Flameproof sensing switch is used to accurately monitor AC from 0.2A to 30A, with optional normally open or normally closed modes. Low price current sensing switch can control various automated industrial control equipment, flashlights, buzzers, relays, microcontrollers or other electrical load equipment.
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    SKU: ATO-CUS-G30
    30-day Returns
    Free Shipping
    Delivery date: 6-12 days

    High-quality current sensing switch for sale online. It can accurately monitor AC from 0.2A to 30A, NO or NC contact mode, passive self-power supply, fireproof housing, and adjustable operating current. This current sensing switch is widely used in AC measurement and monitoring, AC motor overload protection and electronic switch control systems.

    Specifications

    • Model: ATO-BEMG30NO/ATO-BEMG30NC
    • Contact Capacity: 0.5A@240Vac/dc
    • Range: 0.2-30A (AC)
    • Power Supply Mode: Self-Powered/No Power Required
    • Maximum Overload: +100%@30A
    • Contact Form: Normally Open/Normally Closed
    • Weight: 0.074kg
    • Startup Time: Within 0.1S
    • Shell Material: ABS Fireproof
    • IP Rating: IP30
    • Working Temperature: -10°C~+50°C
    • Frequency Range: 40~400Hz
    • Current Threshold: Adjustable via Potentiometer

    Dimension

    Current sensing switch dimension

    Details

    AC Current Switch Details

    Wiring

    Current sensing switch wiring

    Current sensing switch wiring

    Current sensing switch wiring

    Applications

    Current sensing switch applications

    Tips: What is a current sensing switch?

    A current sensing switch is a specialized electrical device designed to detect and respond to changes in electrical current within a circuit. Its primary function is to monitor the flow of electric current and activate or deactivate a connected circuit or device based on predetermined current levels. The switch typically incorporates a sensor or a set of sensors that can measure the intensity of the current passing through the circuit.

    One of the key features of a current sensing switch is its ability to provide a binary output, indicating whether the current exceeds a predefined threshold. When the current surpasses this threshold, the switch is triggered to change its state, either opening or closing the circuit. This functionality is particularly valuable in applications where overcurrent protection, energy management, or automated control is essential.

    Current sensing switches find application in various fields, including industrial automation, power distribution systems, and electronic devices. For instance, in motor control systems, these switches can play a crucial role in preventing motor damage due to excessive current. Additionally, they are employed in smart home systems for energy-efficient management, ensuring that appliances are only active when required, thereby contributing to both safety and energy conservation. Overall, the current sensing switch serves as a valuable component in diverse electrical systems, enhancing efficiency, safety, and control.

    Existing reviews of AC Current Sensing Switch, 0.2A-30A, NO/NC
    Current Sensor Detection
    How does the ATO-CUS-G30 current sensing switch respond to current from a 120VAC forward-phase dimmer connected to an LED load (at different dimming levels)? Also, can I improve sensitivity by increasing the number of transformer windings? Is the current from this 120VAC forward-phase dimmer to an LED load 0.2A?
    From: Obika | Date: 25/11/2025
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Our ATO-CUS-G30 current sensor detects currents in the range of 0.2~30A. As long as it's within this current range, the sensor will output a switching signal normally.
    Device that receives a DC analog signal
    I need a device that receives a ±10V DC analog signal and outputs the same ±10V DC signal, but with a current source of up to 0.25 amps. This device should ideally be powered by either 24V DC or 120V AC.
    From: Morian | Date: 18/08/2025
    Was this review helpful? Yes No (0/0)
    ATO Responded
    Unfortunately, we do not offer sensors that output both voltage and current. We only offer ±10V input, ±10V output, and 24V DC power.
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