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B Type Residual Current Operated Circuit Breaker Circuit Board Assembly
Product Overview
B type residual current operated circuit breaker circuit board assembly is designed to prevent electric shock and fire hazards caused by residual current. Unlike traditional RCCBs that mainly detect sinusoidal alternating current (AC) leakage, B type RCCBs are able to identify a wider range of residual currents, including those generated by complex waveforms. This capability makes it an indispensable component in modern electrical systems, especially in systems containing direct current (DC) elements, such as electric vehicle charging stations, photovoltaic systems, and inverter-driven motor equipment.
Core Features
1. Wider detection range
Composite waveform recognition: Compared with AC type (sinusoidal AC only) and A type (sinusoidal AC + pulsating DC), B type can detect residual current in smooth DC, multi-phase rectifier circuits and composite waveforms (such as AC superimposed on smooth DC, pulsating DC superimposed on smooth DC).
Wideband coverage: Supports a frequency range of 50 Hz to above 1 kHz, avoiding false operation or protection failure in scenarios such as frequency conversion equipment and high-frequency medical instruments.
2. Key application scenarios
Electric vehicle charging pile: Accurately detect smooth DC leakage during charging, replacing the traditional complex solution of "Type A + DC module";
Frequency conversion drive system: solves the risk of pulsating DC leakage in 400-700Hz high-frequency motor equipment in the steel, textile and other industries;
New energy system: Protect photovoltaic DC side leakage and smooth DC fault current of energy storage battery;
Medical equipment: Meet the leakage protection requirements of high-frequency instruments above 1000Hz.
3. Technical advantages
High reliability: through composite waveform stability increase test and multi-band tripping verification;
Integrated design: The modular structure is suitable for compact scenarios such as outdoor energy storage cabinets and photovoltaic combiner boxes.
