ABB S203M-C25 2CDS273001R0254 Miniature Circuit Breaker

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1. Product Overview

The ABB S203M-C25 / 2CDS273001R0254 is a C-type miniature circuit breaker (MCB) designed for low-voltage distribution systems to provide overload and short-circuit protection for circuits and electrical equipment. The S203M series features high reliability, fast response, and convenient installation. This model has a rated current of 25 A and is a 3-pole breaker, offering unified protection for three-phase power.

2. Main Technical Specifications

• Manufacturer: ABB

• Model: S203M-C25 / 2CDS273001R0254

• Product Type: Miniature Circuit Breaker (MCB)

• Poles: 3

• Rated Current (In): 25 A

• Tripping Characteristic: C-type (suitable for general and inductive loads)

• Rated Operational Voltage (Ue): AC 230/400 V

• Short-Circuit Breaking Capacity (Icn): 6 kA

• Mounting: DIN rail

• Protection Class: IP20

• Mechanical Life: ≥ 10,000 operations

• Standards Compliance: IEC 60898-1 / EN 60898-1

3. Advantages and Features

1. Reliable Overload and Short-Circuit Protection
   Provides fast and dependable protection for circuits and electrical equipment.

2. C-Type Tripping Characteristic
   Suitable for general loads and inductive loads such as motors and transformers.

3. Compact and Easy Installation
   DIN rail mounting for quick installation and space-saving in distribution panels.

4. Easy Operation
   Manual ON/OFF control with clear status indication.

5. International Standards Compliance
   Certified to IEC/EN standards, ensuring safety and reliability in low-voltage systems.

4. Typical Applications

• Industrial distribution systems

• Commercial and residential building distribution

• Small motors and transformer protection

• Low-voltage distribution and control panels

• Factory production lines and lighting systems

5. Installation and Operation Notes

1. Verify that the MCB’s rated current, voltage, and poles match the system before installation.

2. Follow wiring diagrams carefully to ensure correct connection of power and load.

3. Install in a dry, ventilated environment; avoid high temperature, dust, and corrosive gases.

4. Perform no-load tests before commissioning to ensure reliable operation.

5. Regularly inspect the MCB status and terminal connections for long-term safe operation.

The structure and details of the product：

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