ABB TS3N125TW Molded Case Circuit Breaker

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1. Product Description

The ABB TS3N125TW Molded Case Circuit Breaker (MCCB) is an industrial-grade low-voltage circuit protection device widely used in power distribution systems and industrial control panels. It provides overload, short-circuit, and under-voltage protection. The TS3N125TW features high breaking capacity, precise protection characteristics, and high reliability, ensuring safety for equipment and personnel.

2. Technical Specifications

• Model: TS3N125TW

• Type: Molded Case Circuit Breaker (MCCB)

• Rated Current: 125 A

• Poles: 3 poles

• Rated Voltage: AC 400 V / DC 250 V

• Short-Circuit Breaking Capacity: 25 kA (IEC/EN standard)

• Breaking Characteristics: Thermal-magnetic protection

• Trip Curve Options: B, C, D type selectable

• Mounting: DIN rail or bolt mounting

• Mechanical Life: ≥ 10,000 operations

• Electrical Life: ≥ 4,000 operations

• Operating Temperature: -5 ℃ to +40 ℃

• Protection Class: IP20

• Standards Compliance: IEC 60947-2, CE, UL

3. Advantages and Key Features

• High reliability with precise thermal-magnetic trip design for accurate overload and short-circuit protection.

• High breaking capacity up to 25 kA, suitable for industrial and commercial distribution systems.

• Selectable trip curves (B, C, D) to match various load characteristics and protection requirements.

• Long lifespan with mechanical life ≥ 10,000 operations and electrical life ≥ 4,000 operations.

• Easy installation and maintenance with DIN rail or bolt mounting, compact design for convenient service.

4. Typical Applications

• Industrial low-voltage distribution systems

• Power distribution and control panels

• Motor and electrical equipment protection

• HVAC systems and large building electrical systems

• Chemical, pharmaceutical, food, and machinery production lines

5. Precautions

• Disconnect power before installation or maintenance to prevent electric shock and equipment damage.

• Ensure rated current and voltage match system requirements to avoid nuisance trips or equipment damage.

• Regularly inspect breaker status and terminal connections for safe and reliable operation.

• Avoid exposure to high humidity, dust, or corrosive environments.

• Do not disassemble or modify the breaker to maintain performance and safety.

The structure and details of the product：

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