GYL9-B Type B RCD Product Highlight:

GYL9-B Electromagnetic-electronic integrated type B residual current circuit breaker compared to traditional Type A or AC devices, the GYL9-B reliably protects against sinusoidal AC, pulsating DC, and smooth DC signals. This ensures effective detection and interruption of fault currents in circuits with frequency converters, rectifiers, or DC loads, preventing electric shocks and equipment damage.

Dual Wiring Design:The terminal block supports dual busbars, accommodating both wire and busbar connections for flexible installation, convenient operation, and compatibility with diverse circuit requirements.

Multiple Specifications:Available in rated currents of 25A, 40A, 63A, 80A, and 100A; 2P or 4P configurations; and residual current sensitivities of 30mA, 100mA, or 300mA—meeting the needs of residential, commercial, and industrial applications.

High-Temperature-Resistant Materials:Internal plastic components are made from high-temperature-resistant materials to prevent deformation or performance loss under elevated temperatures. Reinforced flame-retardant nylon and high-quality silver contacts enhance overall durability and safety.

High Sensitivity and Versatility:Built on the advanced ID technology platform, it offers high sensitivity and is ideal for diverse scenarios such as medical equipment, data centers, and renewable energy systems, delivering superior protection.

Free Tripping Mechanism:The operating mechanism features free tripping, ensuring the breaker remains only in the fully closed or open position—whether in normal or fault conditions—eliminating the risk of intermediate states.

Modular Expansion:Supports integration with reclosing devices for automatic reset; includes a leakage indication window for rapid fault diagnosis.

Dedicated Type B Protection:Provides comprehensive response to complex waveforms, including high-frequency signals (up to 1000Hz), pulsating DC, and smooth DC—far exceeding standard requirements. In photovoltaic inverters and variable frequency drive systems, the GYL9-B effectively mitigates DC leakage risks, ensuring personnel safety and stable equipment operation.

GEYA-GYL9-B (Specification) Pdf