Motor-operated small-size circuit breaker with trip protection function

Abstract

The invention relates to a motor-operated small-size circuit breaker with a trip protection function. The motor-operated small-size circuit breaker comprises at least one level of small-size circuit breaker (A) and a motor-operated device (B), wherein the small-size circuit breaker (A) and the motor-operated device (B) are connected by employing side-surface splicing, the motor-operated device (B) controls the small-size circuit breaker (A) to do breaking-closing operation, the motor-operated small-size circuit breaker is characterized in that a trip linkage piece (7) is arranged on the motor-operated device (B) and can be linked with a trip rod (8) in the small-size circuit breaker (A) so that the trip rod (8) can trip. By the motor-operated small-size circuit breaker, the reliability and the stability of a product are improved, the appearance sizes of a motor-operated device module and a small-size circuit breaker module are completely consistent, the product volume is reduced, and a user is more rapid and convenient to install and use; and meanwhile, the small-size circuit breaker is directly driven to be rapidly trip from the interior by the motor-operated device, the purposes of the small-size circuit breaker is directly locked in a trip state by the motor-operated device and closing operation cannot be performed by an external handle under the special states of user arrearage and a rear-end circuit fault are achieved.

Description

technical field

[0001] The invention belongs to the technical field of low-voltage electrical appliances, and in particular relates to an electrically operated small circuit breaker with a trip protection function, which improves the reliability of the circuit breaker in use. Background technique

[0002] The opening and closing actions of traditional miniature circuit breakers require manual operations. With the development of smart grid, there is an urgent need for small circuit breaker products that can reliably realize automatic opening and closing. Therefore, small circuit breakers assembled with electric operating devices have appeared on the market. By sending instructions to the electric operating device, the small circuit breaker can be driven to open and close automatically without manual operation, which effectively saves manpower and material resources. Applications are increasingly widespread. However, for such products that are common in the existing market, ...

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