Zhejiang Donghua Electrical Appliance Co., Ltd.
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China MR Series Current Transformer - Affordable Solutions from Reliable Suppliers and Factory

Our range of tape wrapping current transformers, featuring six standard silicon steel core models, offers a cost-effective solution for various applications in Southeast Asia. These transformers are versatile and can be used with or without a foot and plastic cover. As a leading manufacturer in China, we pride ourselves on delivering high-quality products to our clients. Our efficient factory ensures that we meet the demands of suppliers seeking reliable and affordable current transformers. Trust us for your electrical equipment needs

    Feature
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    Flexible Mounting Options — Base-mounted for stable panel installation, or baseless for space-constrained and integrated cabinet layouts. Supports both terminal cover and open-terminal configurations.

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    High Cost-Effectiveness — Optimized manufacturing and material selection deliver a low-cost advantage while meeting standard performance requirements, ideal for budget-sensitive or bulk procurement projects.

    Ultra-Wide Current Range — Rated primary current from 5A to 30,000A, covering small civil distribution systems to large industrial high-current environments.

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    Enhanced Safety — Terminal cover design protects internal connections against dust, moisture, and external mechanical forces, ensuring long-term operational safety.

    Standard
    IEC60044-1 GB1208-2006
    Scope of Application

    The MR series current transformers utilize insulating tape winding as their core technology, making them a low-cost product that combines practicality and economy. The product series is comprehensively planned, including six sub-specifications to meet the basic needs of various current measurement scenarios, providing users with diverse choices.

    Given their stable operating performance, affordable procurement cost, and design advantages adapted to the characteristics of the Southeast Asian power grid, this series of transformers is widely used in the power markets of Southeast Asian countries. Whether in industrial power distribution, commercial building power supply, or current monitoring of residential power facilities, they can be found everywhere, becoming a preferred component with outstanding cost-effectiveness in local basic power engineering projects.

    Technical Parameters
    Parameter Value
    Rated Frequency 50/60 Hz
    Rated Test Voltage 3 kV AC (1 min)
    Rated Short-Time Thermal Current (Ith) 60 In
    Rated Dynamic Current 2.5 Ith
    Rated Voltage (Um) 0.72 kV AC
    Continuous Overload (Id) 1.2 In
    Operating Temperature -10°C ~ 50°C
    Housing Self-Extinguishing Class V0
    Safety Factor FS 5
    Secondary Current 5A / 1A
    Frequently Asked Questions
    1What is the rated primary current range of the MR series current transformers?
    The MR series supports an extremely wide rated primary current range from 5A to 30,000A, making them suitable for both small civil power distribution systems and large industrial high-current environments.
    2What mounting options are available for the MR series?
    The MR series offers both base-mounted and baseless mounting configurations. The base-mounted version provides stable floor or panel mounting, while the baseless version is ideal for space-constrained installations and integrated cabinet layouts.
    3Which international standards does the MR series comply with?
    The MR series current transformers comply with IEC60044-1 and GB1208-2006, ensuring they meet internationally recognized safety and performance requirements for instrument transformers.
    4What is the operating temperature range of the MR series?
    The MR series is designed to operate reliably in ambient temperatures ranging from -10°C to 50°C, making them suitable for a variety of climate conditions including the warm and humid environments common in Southeast Asia.
    5Why are MR series transformers widely used in Southeast Asian markets?
    Their combination of stable performance, low procurement cost, and a design specifically adapted to the characteristics of Southeast Asian power grids makes them a highly preferred choice. They are used across industrial, commercial, and residential power distribution applications in the region.
    6Does the MR series support a terminal cover configuration?
    Yes. The MR series is available in both with and without terminal cover configurations. The terminal cover option protects internal terminals from dust, moisture, and mechanical damage, while the open-terminal version allows for quicker wiring and easier routine maintenance.