ABB 2CSF204005R2900 Residual Current Circuit Breaker

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ABB 2CSF204005R2900 Residual Current Circuit Breaker (RCCB)

The ABB 2CSF204005R2900 is a high-performance Residual Current Circuit Breaker designed to detect earth leakage currents and provide protection against electric shock and fire hazards. It is widely used in residential, commercial, and industrial low-voltage distribution systems, ensuring reliable and fast residual current protection.

Main Technical Specifications

• Product type: Residual Current Circuit Breaker (RCCB)

• Number of poles: 4P

• Rated current: 40 A

• Rated residual operating current: 30 mA

• Rated operational voltage: 400 V AC

• Rated frequency: 50/60 Hz

• Residual current type: Type A (sensitive to AC and pulsating DC)

• Rated short-circuit making and breaking capacity: 10 kA

• Mounting method: DIN rail mounting

• Mechanical endurance: ≥20,000 operations

• Electrical endurance: ≥10,000 operations

• Terminal type: Screw terminals

• Degree of protection: IP20 (after installation)

• Compliant standard: IEC/EN 61008

Advantages and Features

• High-sensitivity earth leakage protection for personal safety

• Fast tripping performance reduces fire risks

• Suitable for AC and pulsating DC loads

• Compact structure saves panel space

• Reliable and secure terminal connection

• Long mechanical and electrical service life

• Modular design for easy maintenance and replacement

Applications

• Residential power distribution systems

• Commercial building electrical protection

• Industrial low-voltage distribution panels

• Data centers and critical power circuits

• Lighting and socket circuit protection

Precautions

• Installation and maintenance must be performed by qualified electricians

• Always disconnect power before wiring

• Test the device regularly using the test button (recommended monthly)

• Not suitable for pure DC systems unless specifically designed

• Avoid installation in high humidity, dusty, or corrosive environments

• Final specifications should be confirmed with the product nameplate and official technical documentation

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