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The auxiliary contact acts simultaneously with the main contact to indicate the split state of the main contact. In many cases, the main contact current of the circuit breaker is very large, or the voltage is very high, and cannot be directly used for monitoring. It must be replaced by an auxiliary contact.
More uses:
1. Access indicator circuit for displaying the split of the circuit breaker.
2. Access blocking circuit for interlocking action and safety protection of multiple main circuit electrical appliances.
3. Access the remote signal loop for the remote dispatch center to monitor the local circuit breaker status.
4. Access fault discrimination loop for fault type determination in some cases.
The categories are:
1. "a" contact: This auxiliary contact is in the same state as the main contact, that is, the main contact is divided into a contact, and vice versa.
2. "b" contact: This auxiliary contact is in the opposite state to the main contact, ie the main contact is divided into b contacts and vice versa.
3. First and then split contacts: This auxiliary contact has a longer closing time than the main contact during the closing and closing process, and is used to suppress the split inrush current.
4. Alarm contact: This auxiliary contact only operates when the circuit breaker fails to trip, and does not operate during normal opening operation, and is used to judge whether the circuit breaker trips due to a fault.
5. Delayed contact: Auxiliary contact with delay device is used for some occasions that need to delay the auxiliary signal.
The function of the auxiliary contact is to transmit the switching signal of the circuit breaker, similar to the auxiliary contact of the contactor.
Founded in 2005, Dongguan Yinyin Hardware Products Co., Ltd. specializes in: silver contacts, electrical contacts, double composite silver nails, riveted silver contacts, soldered silver contacts, various precision stampings, conductive copper posts, contacts Screws, electrical screws, DC, AC various pins, rivets, silver dots, binding posts, stamping parts and production of various silver, copper, iron, aluminum, non-show steel and other heterosexual products, electricity, mobile phone 13728192869, Mr. Chen
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