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Premium Type B Breaker Ensures Comprehensive Electrical Safety Solutions

Aug-21-2025
wanlai electric

As a leading innovator in circuit protection technology, we present the JCR2-125 RCD an advanced Type B Breaker engineered to deliver unparalleled safety for modern electrical systems. This residual current device continuously monitors circuit integrity, instantaneously disconnecting power upon detecting minute residual current imbalances as low as 6mA DC or 10mA AC. Engineered to IEC 62423 standards, it provides critical protection against both smooth DC faults and complex AC/DC composite leakage currents where conventional breakers prove inadequate, effectively preventing electric shock hazards and fire risks in residential, commercial, and industrial environments.  

 

The JCR2-125 operates at 125A rated current with 30mA trip sensitivity, achieving disconnection within 30 milliseconds to eliminate electrocution risks. Its voltage-independent design maintains consistent performance across fluctuating power conditions while integrated thermal-magnetic protection safeguards against overloads and short circuits. The compact 4-module DIN-rail form factor facilitates seamless installation in consumer units and distribution boards, complemented by a manual test button for routine safety verification.  

 

Unlike standard Type A or AC devices, this sophisticated Type B Breaker detects the full spectrum of residual currents including pure DC leakage from EV chargers and solar inverters, high-frequency faults exceeding 1kHz generated by LED drivers and IT equipment, and phase-controlled pulsating DC from industrial VFDs. This comprehensive detection capability ensures reliable protection for critical applications including medical facilities, data centers, commercial kitchens, and manufacturing plants where mixed electrical environments present unique safety challenges.  

 

Enhanced operational reliability stems from its silver-nickel contacts rated for 10,000 mechanical operations, corrosion-resistant construction, and clear mechanical trip indication for visual status confirmation. The device withstands 4000V impulse voltages (Overvoltage Category III) and incorporates arc fault detection technology, establishing multiple layers of protection against electrical hazards. Robust internal shielding ensures immunity to electromagnetic interference in electrically noisy environments.  

 

For electrical engineers and contractors specifying mission-critical installations, this certified Type B Breaker represents the pinnacle of safety technology. Its proven performance in electric vehicle charging infrastructure, renewable energy systems, and sensitive electronic equipment installations makes it indispensable for modern power distribution. Available globally with UKCA, CE, and RoHS certifications, we invite inquiries regarding technical specifications and project-specific compliance documentation. 

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