ST208D |Merlin Gerin| MasterPact series circuit breaker

Description

The Merlin Gerin ST208D MasterPact series circuit breaker is a highly rated device in the realm of electrical distribution systems. Here are the key features, specifications, and applications of the ST208D unit which is designed to provide reliable protection and control for electrical systems.

### Key Features:

1. **Type**: The MasterPact ST208D is a molded case circuit breaker (MCCB), designed for use in industrial and commercial electrical distribution.

2. **Current Rating**: This particular model has a current rating of 1000A, making it suitable for high-load environments.

3. **Voltage Rating**: Typically designed to operate in high voltage environments (commonly up to 690V, but this can vary based on configuration).

4. **Poles**: The MasterPact series can be offered in various pole configurations. The specific model you mentioned may be a 3-pole or 4-pole breaker, used for three-phase systems (with or without neutral).

5. **Protection Features**: The unit generally includes overcurrent protection, short-circuit protection, and may possess ground-fault protection depending on the configuration.

6. **Compact Design**: MasterPact breakers are known for their space-saving design while offering rugged durability and operational reliability.

7. **Advanced Functions**: Advanced versions may include electronic trip units that provide customizable settings for protection, monitoring, and communication options.

### Technical Specifications:

– **Model Number**: ST208D
– **Current Rating**: 1000A
– **Frame Type**: MasterPact
– **Trip Unit**: TU1547 is typically an electronic trip unit that offers adjustable settings for overcurrent and short-circuit protection.
– **Rated Insulation Voltage**: Commonly rated at 660V or higher depending on specific configurations.
– **Interrupting Capacity**: The short-circuit breaking capacity will vary depending on the system configuration; this is a critical rating to consider for the protection of downstream equipment.

### Applications:

– **Industrial Power Distribution**: The MasterPact ST208D is used extensively in factories, manufacturing plants, and large commercial buildings for safe electrical distribution.
– **Motor Control Centers**: Suitable for applications where large electrical motors are controlled.
– **Substations**: Used in electrical substations for large-scale electrical distribution.

### Additional Considerations:

– **Installation**: Proper installation is crucial for the optimal performance of the MasterPact breaker, and it should follow all applicable electrical codes and safety standards.
– **Maintenance**: Regular maintenance and testing are recommended to ensure reliable operation, especially under heavy load conditions.
– **Documentation**: For precise installation guidelines, operational instructions, and maintenance practices, refer to the official Schneider Electric (Merlin Gerin) documentation specific to the ST208D model.

### Conclusion:

The Merlin Gerin ST208D MasterPact unit is a robust and reliable choice for managing electrical distribution in demanding environments. If you have specific inquiries regarding installation, customization, or integration with other electrical devices, feel free to ask!