ABB 2CSF204005R1250 residual current circuit breaker

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1. Product Overview

The ABB 2CSF204005R1250 is a high-performance residual current circuit breaker (RCCB) designed for earth-leakage protection in low-voltage distribution systems.
It quickly disconnects power in case of residual current or earth faults, protecting personnel from electric shock and preventing equipment damage.
With a compact design and easy installation, this RCCB is a reliable safety component for industrial, commercial, and residential low-voltage systems.

2. Main Technical Specifications

3. Advantages and Features

1. High Safety
   Quickly detects leakage current and disconnects power to protect personnel from electric shock.

2. Reliable Protection
   Prevents damage to electrical equipment and reduces fire risks caused by leakage currents.

3. Compact Design
   Saves space in distribution panels and allows combination with other protective devices.

4. Easy Installation and Maintenance
   DIN rail mounting for simple operation, inspection, and replacement.

5. Wide Standard Compatibility
   Complies with international and domestic standards, suitable for various low-voltage distribution systems.

4. Typical Applications

• Industrial low-voltage distribution systems

• Commercial building earth-leakage protection

• Residential electrical safety protection

• Lighting and small appliance protection

• Distribution and control panels

• UPS and data center power safety systems

Provides protection against earth leakage for personnel and equipment safety.

5. Installation and Usage Notes

1. Ensure rated current and residual operating current match load and safety requirements before installation.

2. Disconnect power before wiring to avoid electric shock or equipment damage.

3. Test residual current function periodically to ensure proper operation.

4. Install in a dry, well-ventilated distribution cabinet, avoiding humidity and dust.

5. Maintenance or replacement should be performed by qualified electricians.

The structure and details of the product：

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