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Our project of “Large-scale applications of advanced current measurement technologies” successfully entered into the final of Shanghai area in China Wings Start-up Competition. We are glad to let more people know the importance of electrical measurement in today’s world full of power electronics applications.
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Bituo Technik entered into the final of Shanghai area in “2022 China Wings Start-up Competition”
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Over the past years, we have seen a clear trend of using RCD Type A and RDC-DD for home charging applications. Some EV charger manufacturers declare built-in type-A 30 mA and DC 6 mA residual current protection at their EV chargers. It is nice to have built-in type-A 30mA protection at EV chargers as back-up protective measures of the external type-A 30mA RCDs, but the external type-A 30mA RCDs shall not be removed.
How to select 6 mA DC RCM for mode-3 EV charging points
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There are mainly three types of 6 mA DC RCM (RDC-MD) in the market. We have noticed built-in 6 mA DC RCM at a mode-3 EV charging controller is favored by most of professional EV charging point manufacturers worldwide.
Is an external type-A 30mA RCD still needed, when there is built-in type-A 30mA and DC 6 mA protection at an EV charger?
For mode-2 and mode-3 charging, Bituo offers a wide range of products that facilites cost-effective protection against fault currents of AC 30 mA and DC 6 mA. 
Among applications where smooth DC residual current protection is needed, we think EV charging is the one most urgently calling for high-performance and affordable protection devices. Therefore, our team decide to step up to promote IEC 62955 related products in the IEC market, aiming to speed up the protectiong upgrading for mode-2 and mode-3 charging. 
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An industry pioneer in promoting IEC 62955 RDC-DD 
Key achievment

  • ​A comphrehensive IEC 62955 related product family available for EV charger manufacuters
  • Supported 300+ EV charger manufacturers and installers in residual current protection topic​​​​​​​
  • Globally the first 2MW compact Type-EV RCBO launched in Spring 2021

  • Globally the first IEC 62955 RDC-PD certified by TÜV Rheinland in winter 2020
    • Globally the first IEC 62955 RDC-MD certified by TÜV Rheinland in winter 2019
    Our team has proven expertise of designing safe and reliable residual current devices. We are glad to assist our customers in integrating our type-A/F ICs and type-EV/B sensors- into their power electronics devices and protection products, so as to make electricity safer. 

    Residual Current Protection

    (Type-A/F ICs, type-EV/B sensors and RCDs)

    We develop segment-specific current transducers for power electronics applications and energy sensors for power distribution system. Our miniature energy sensors with IoT features facilities energy management in buildings, infrastructures, and industries.  ​​​

    Electrical Measurement

    (Energy IoT sensors and current transducers)

    We offer advanced technologies for electrical measurement and protection, and segment-specific products for machine and equipment manufacturers.
    We are China's leading technology provider for residual current protection. ​​Our technologies and products improve electrical safety in today's world full of power electronics applications. ​​
    We raise the bar of low-voltage protection technology in the new digital era, so as to improve electrical safety.
    • An expert company mastering cutting-edge residual current protection technologies
    • Co-founders are all veterans of R&D and sales & marketing in low-voltage business
    • Consistent high quality secured together with leading component and assembly partners
    • A industry pioneer promoting IEC 62955 RDC-DD with a wide range of products
    • An innovative player delivering easy-to-use energy sensors with strong IoT features
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    Our core competence is electrical protection​.

    We are China's leading technology provider for residual current protection. ​​Our technology and products improve electrical safety in today's world full of power electronics applications. 

    Electrical Protection in Digital Energy Era