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RT
RT (Residual current circuit breaker with overcurrent protection, also known as RCBO or differential magnetothermal circuit breaker) is a compact protection device that combines the functions of a residual current device (RCD) and a miniature circuit breaker (MCB) in a single unit. These devices are designed to protect electrical circuits agains...
RT (Residual current circuit breaker with overcurrent protection, also known as RCBO or differential magnetothermal circuit breaker) is a compact protection device that combines the functions of a residual current device (RCD) and a miniature circuit breaker (MCB) in a single unit. These devices are designed to protect electrical circuits against both overloads and short circuits, while simultaneously detecting earth leakage currents. Typically available in 1P+N, 2P, 3P+N, and 4P configurations, with rated currents from 6A to 63A, breaking capacities up to 10kA, and residual current sensitivities of 30mA, 100mA, or 300mA. They operate at rated voltages of 230/400V AC, 50/60Hz, and are commonly mounted on DIN rails in distribution boards. The term RT is widely used in European markets, while in other regions they are referred to as RCBOs, differential magnetothermal switches, or combined RCD/MCB units.
RT devices are essential in residential, commercial, and industrial electrical installations where both overcurrent and earth fault protection are required in a single module. They are typically installed in main distribution boards, sub-distribution panels, and control cabinets for lighting circuits, socket outlets, and small power loads. Common applications include protection of circuits in apartments, offices, hospitals, schools, and industrial facilities where space is limited and high reliability is needed. They are also used in renewable energy systems, such as photovoltaic installations, to ensure safe isolation and protection against leakage currents.
Our catalog includes a wide range of RT devices, such as the RT-1P+N-16A-30mA, RT-2P-25A-100mA, RT-3P+N-40A-300mA, and RT-4P-63A-30mA models. These are available in various breaking capacities (6kA, 10kA) and with different trip characteristics (B, C, D). The article code typically follows the pattern: RT-[Number of Poles]-[Rated Current]-[Residual Sensitivity], for example RT-2P-32A-30mA. We also stock specialized versions with time delay (S-type) for selective coordination, and units with auxiliary contacts for remote signaling.
Partnering with Electric Automation Network ensures you receive genuine RT devices at competitive prices with up to 65% discount compared to market rates. Our engineering team provides personalized technical support for selection, coordination, and compliance with local standards (IEC 61009, EN 61009). We offer express worldwide shipping, real-time pricing, and detailed technical documentation for each article, including wiring diagrams and characteristic curves.
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