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Earth leakage circuit breaker with auxiliary device
Earth leakage circuit breakers with auxiliary devices, often referred to as residual current circuit breakers with overcurrent protection (RCBOs) or simply residual current devices (RCDs) with add-on modules, are critical components in modern electrical installations. These devices combine earth leakage detection and circuit interruption in a si...
Earth leakage circuit breakers with auxiliary devices, often referred to as residual current circuit breakers with overcurrent protection (RCBOs) or simply residual current devices (RCDs) with add-on modules, are critical components in modern electrical installations. These devices combine earth leakage detection and circuit interruption in a single unit, typically rated for currents from 16A to 125A, with sensitivities ranging from 10mA to 300mA for personnel and fire protection. They are available in 2P and 4P configurations, with breaking capacities up to 10kA or higher, and operate at voltages up to 400V AC. The auxiliary devices, such as shunt trips, undervoltage releases, or alarm contacts, enhance functionality by enabling remote tripping, status monitoring, or integration with building management systems. These units are designed for DIN-rail mounting in distribution boards, ensuring compact and standardized installation.
These devices are primarily deployed in residential, commercial, and industrial electrical panels for protection against electric shock and fire hazards caused by earth faults. Common applications include main distribution boards (MDBs), sub-distribution boards, and final circuits in environments like hospitals, data centers, factories, and office buildings. They are essential in circuits supplying sockets, lighting, and sensitive equipment where continuous operation and safety are paramount. In industrial settings, they protect motor control centers and automation systems, while in residential areas, they safeguard household circuits from leakage currents.
Key subcategories include RCBOs with integrated overcurrent protection, standalone RCDs with auxiliary contact modules, and specialized units for DC or pulsed currents. Main article codes often follow a pattern like 'RCBO-2P-40A-30mA' or 'RCD-4P-63A-300mA', where the number of poles, rated current, and sensitivity are specified. For example, a typical code might be 'RCBO-2P-25A-30mA' for a two-pole, 25A, 30mA device. Other variants include 'RCD-4P-100A-300mA' for high-current applications. These codes are standardized across manufacturers like ABB, Siemens, or Schneider Electric, ensuring compatibility and ease of selection.
At Electric Automation Network, we provide these earth leakage circuit breakers with auxiliary devices at competitive real-time prices, supported by detailed technical documentation for each article. Our engineering team offers personalized technical support to help you select the right device for your specific application, whether it is for a new installation or retrofitting an existing system. We ensure express worldwide shipping, so your critical components arrive on time, minimizing downtime and project delays.
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