Key words about molded case circuit breakers

1. Rated Current: This refers to the current that a circuit breaker can continuously carry without damage, under conditions that do not exceed the specified temperature rise. Different application scenarios require circuit breakers with different rated currents.
2. Breaking Capacity: The maximum fault current value that a circuit breaker can safely interrupt. This parameter is crucial as it determines the performance of the circuit breaker in extreme situations.
3. Voltage Rating: refers to the maximum voltage at which a circuit breaker can operate safely. Choosing the appropriate voltage level is crucial for ensuring equipment safety and effectiveness.
4. Pole Number: This represents the number of circuit lines interrupted by the circuit breaker. Single pole is used for single-phase circuits, bipolar is used for two wire circuits, and three pole and four pole are used for three-phase circuits.
5. Protection type:
-Overload protection: To prevent wire overheating and potential fire caused by prolonged overload in the circuit.
-Short circuit protection: Quickly disconnect in the event of a short circuit in the circuit to protect the circuit and equipment.
-Leakage protection: Detect the leakage situation in the circuit and disconnect the circuit when leakage is detected.
6. Installation method:
-Embedded installation: The circuit breaker is installed inside the electrical board and is commonly used in fixed installation scenarios.
-External installation: The circuit breaker is installed outside the electrical board for easy operation and maintenance.
7. Operating mechanism:
-Manual operation: Users need to manually turn on or off the circuit breaker.
-Automatic operation: The circuit breaker can automatically sense faults and operate to disconnect or reconnect.
8. Auxiliary Contact: This is an additional contactor used to send signals or control other devices when the circuit breaker is activated.
9. Insulation material: The shell of a circuit breaker is usually made of high-strength and heat-resistant plastic, which can provide necessary mechanical strength and electrical insulation.
10. Standard certification:
-IEC (International Electrotechnical Commission): A widely recognized international electrical standard.
-ANSI (American National Standards Institute): Certification of standards in the United States region.
These certifications ensure the quality and safety of products and are applicable to different international markets.
These detailed keyword descriptions help ensure that the molded case circuit breaker meets the specific application requirements and provides necessary safety guarantees when selecting it.