ABB 2CDS251001R0557 miniature circuit breake

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1. Product Overview

The ABB 2CDS251001R0557 is a high-performance miniature circuit breaker (MCB) designed to protect low-voltage distribution circuits and electrical equipment from overload and short-circuit.
Featuring advanced thermal-magnetic tripping technology, it responds quickly and reliably, disconnecting the circuit in abnormal current conditions to ensure safety.
Compact, easy to install, and highly safe, this MCB is widely used in industrial, commercial, and residential low-voltage distribution systems.

2. Main Technical Specifications

3. Advantages and Features

1. High Reliability
   Thermal-magnetic tripping ensures rapid disconnection under overload or short-circuit conditions.

2. Compact Design
   Saves distribution cabinet space and allows multi-pole combinations.

3. Easy Installation and Maintenance
   DIN rail mounting for convenient operation and system expansion.

4. High Breaking Capacity
   10 kA short-circuit rating suitable for industrial and commercial environments.

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

4. Typical Applications

• Industrial low-voltage distribution systems

• Commercial building electrical protection

• Residential and home distribution systems

• Lighting and small appliance protection

• UPS and control panel systems

• Data center and electrical equipment protection

Provides overload and short-circuit protection to ensure equipment and personnel safety.

5. Installation and Usage Notes

1. Verify that the breaker’s rated current matches the connected load before installation.

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

3. Periodically check the breaker condition to ensure proper operation.

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

5. Replacement or maintenance should be performed by qualified electricians.

The structure and details of the product：

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