AC High Breaking RCBO

The AC High Breaking RCBO is a compact residual current operated circuit breaker with integral overcurrent protection, designed for low-voltage AC distribution systems where leakage protection, overload protection, and short-circuit protection must be combined in one device. It is suitable for 50Hz/60Hz circuits with rated voltage options for AC 230V and AC 400V systems, supporting common pole configurations including 1P+N, 2P, 3P, 3P+N, and 4P. With optional rated currents from 63A to 125A and high breaking performance, this product is well suited for residential distribution boards, commercial panels, small industrial cabinets, and equipment protection circuits that require reliable safety switching in limited installation space. The product is used to protect people against indirect contact, reduce fire risk caused by earth leakage faults, and protect electrical circuits against overcurrent conditions. Its compact modular structure, clear ON/OFF indication, and standard rail installation make it practical for new electrical projects, panel upgrades, and OEM distribution equipment. For buyers searching for a dependable high breaking capacity RCBO for AC power systems, this series provides a balanced solution for safety, installation efficiency, and long-term operation.

• Integrated residual current protection and overcurrent protection help simplify circuit design and reduce panel space compared with separate protective devices.
• Suitable for AC 230V and AC 400V distribution systems, with 1P+N, 2P, 3P, 3P+N, and 4P options for different wiring structures.
• Available in 63A, 80A, 100A, and 125A rated current options to match lighting circuits, equipment circuits, and higher-load terminal distribution applications.
• Residual operating current options include 0.03A, 0.05A, 0.1A, and 0.3A, allowing selection according to personnel protection, equipment protection, or fire-prevention requirements.
• High breaking performance supports reliable interruption of fault current in demanding low-voltage installations.
• Clear status indication helps operators identify ON and OFF positions quickly during operation, inspection, and maintenance.
• IP20 body protection and DIN rail installation support safe and efficient integration into standard distribution boxes and control panels.

• Residential and apartment distribution boards requiring leakage and overcurrent protection.
• Commercial lighting, office, retail, and branch circuit protection systems.
• Small industrial electrical cabinets and equipment control circuits.
• Power distribution upgrades where compact integrated protection is required.
• Electrical systems where earth fault protection, shock protection, and fire risk reduction are important selection factors.

Installation and maintenance must be performed by qualified electrical personnel. Before installation, disconnect the upstream power supply and verify that the circuit is fully de-energized. The product should be installed in an environment without flammable gas, conductive dust, corrosive vapor, rain exposure, severe vibration, or strong mechanical impact. The ambient working temperature should normally be between -5°C and +40°C, and the 24-hour average temperature should not exceed +35°C. The installation altitude should not exceed 2000m unless derating or special design confirmation is provided.

Mount the device onto a TH35-7.5 standard DIN rail and confirm that the locking mechanism is fully engaged. Select conductor size according to the rated current and tighten the terminals securely to prevent overheating, poor contact, or insulation damage. After wiring, check line and load connections carefully, confirm that the protective function and switching action are normal, and then perform commissioning according to local electrical regulations and project requirements.

• Inspect terminal tightness regularly and check whether the enclosure, handle, and indicators remain in good condition.
• Do not operate the product beyond its rated current, voltage, or environmental limits.
• If abnormal heating, burning smell, failure to switch, or repeated tripping occurs, disconnect power and arrange professional inspection immediately.
• The device should not be repaired or modified by unqualified personnel. Replace the unit if the mechanism, enclosure, or insulation performance is damaged.

When selecting an AC High Breaking RCBO for a project, confirm the rated voltage, pole configuration, rated current, residual operating current, expected short-circuit level, wiring capacity, and installation environment. For personnel protection, a lower residual current setting is commonly preferred; for upstream or fire-prevention applications, a higher residual current setting may be selected according to system design. Proper coordination with upstream and downstream protective devices is important for reliable distribution system performance.

For project selection or bulk purchasing, please provide the required rated current, pole configuration, residual operating current, quantity, application environment, and distribution cabinet requirements. Our team can help confirm the suitable RCBO configuration and provide product data, quotation support, and delivery information for your electrical protection project.