ABB-MCCB-XT1S160-TMD25-FF-3P

   ABB-MCCB-XT1S160-TMD25-FF-3P is the complete model of the molded case circuit breaker (MCCB) in the Tmax XT series of ABB. Its core parameters and technical characteristics can be analyzed from the following aspects:

 I. Disassembly of the Model Code

II. Core Technical Parameters

1. **Frame Current and Rated Current**

    - **Frame current (frame rated current)**: 160A, indicating the maximum current level that the circuit breaker enclosure can support.

    - **Rated current (In)**: 25A, which is the maximum current for long - term stable operation and needs to match the load current (e.g., circuits below 25A).

2. **Tripping Characteristics**

    - **Thermal tripping (overload protection)**:

        - **Adjustment range**: 0.7 - 1×In (i.e., 17.5A - 25A), adjusted by rotating the knob at the front of the release.

        - **Action time**: Inverse - time characteristic. The larger the current, the faster the action (e.g., it trips in about 1 hour at 1.5×In and in about 10 seconds at 6×In).

    - **Magnetic tripping (short - circuit protection)**:

        - **Threshold**: Fixed at 10×In (i.e., 250A). It trips instantaneously (<0.1 seconds) when the current exceeds this value.

        - **Application scenarios**: Protect the circuit from the impact of short - circuit current (e.g., direct contact between the live wire and the neutral wire).

3. **Breaking Capacity**

    - **Rated ultimate short - circuit breaking capacity (Icu)**:

        - 63.75kA@230V AC, 50kA@380V AC, 37.5kA@415V AC (the specific values vary according to different voltages, see relevant information).

    - **Rated service short - circuit breaking capacity (Ics)**:

        - Usually 75% - 100% of Icu, indicating the ability of the circuit breaker to continue to be used after breaking the short - circuit current.

4. **Number of Poles and Installation**

    - **3P poles**: Suitable for three - phase systems (e.g., industrial motors, three - phase power supplies), and can cut off three phase lines simultaneously.

    - **FF installation method**: Fixed (Fixed), which needs to be installed through screws or rails and has no draw - out structure.

III. Functions and Application Scenarios

1. **Protection Functions**

    - **Overload protection**: Prevent the line from overheating due to excessive load (e.g., multiple devices running simultaneously).

    - **Short - circuit protection**: Quickly cut off the short - circuit current to avoid equipment damage or fire risks.

    - **No leakage protection**: An additional RCD (Residual Current Device) needs to be configured to achieve leakage protection (e.g., in wet environments or for equipment with metal casings).

2. **Typical Applications**

    - **Industrial power distribution**: Branch protection for three - phase motors, production lines, and power distribution cabinets.

    - **Commercial buildings**: Three - phase circuits for lighting, air - conditioning, etc. in shopping malls and office buildings.

    - **Data centers**: Secondary protection for server cabinets and UPS systems.

    - **Photovoltaic systems**: A DC - specific model (e.g., XT1S DC) needs to be selected for the DC side, but this model is an AC version.

3. **Comparison with Other Models**

    - **XT1S vs XT2S**: The frame current of XT1S is 160A, while that of XT2S is 250A. Choose according to the load current.

    - **TMD vs PR221DS (electronic release)**: TMD is a basic thermal - magnetic release, while PR221DS supports three - stage protection (long - time delay + short - time delay + instantaneous) and ground - fault protection, which is suitable for complex systems.

 IV. Installation and Selection Suggestions

1. **Selection Points**

    - **Rated current (In)**: It should be greater than or equal to the load current (e.g., choose TMD25 for a 25A load).

    - **Breaking capacity**: Select according to the expected short - circuit current at the installation location (e.g., ≥50kA is required for a 380V system).

    - **Number of poles**: Choose 1P for single - phase loads and 3P for three - phase loads.

2. **Installation Precautions**

    - **Ambient temperature**: - 5°C - +40°C. Avoid high - temperature environments that may affect the tripping accuracy.

    - **Wiring method**: Supports front - panel or rear - panel wiring. Ensure that the terminal torque meets the requirements.

    - **Accessory expansion**: Auxiliary contacts, shunt releases, etc. can be added to achieve remote control or status monitoring.

3. **Certification and Compliance**

    - **CE certification**: Complies with the EU Low Voltage Directive (LVD) and RoHS environmental protection standards.

    - **UL certification**: Some models support the North American market. The specific model suffix needs to be confirmed (e.g., XT1S160 - TMD25 - FF - 3P/UL).

V. Summary

- **Core advantages**: The Tmax XT series features high reliability, compact design, and modular expansion, and is suitable for various industrial and commercial scenarios.

- **Limitations**: The thermal - magnetic release does not have short - time delay short - circuit protection. Complex systems need to be upgraded to an electronic release.

- **Alternative solutions**: If leakage protection is required, a model integrated with RCD can be selected (e.g., XT1S160 - TMD25 - FF - 3P+RC221).

If you need to further verify the parameters or obtain the latest quotes, it is recommended to query through ABB's official channels or authorized distributors (e.g., [ABB Low - Voltage Products Official Website].