Auxiliary device of circuit breaker

Abstract

The disclosed auxiliary device, which is of a circuit breaker and which may be an external operation handle device and / or an undervoltage release device, is configured with the undervoltage release device separated into two modules that are an electromagnetic release unit (7) and a quick-closing contact unit (8), and the release unit (7) is set inside the case (1e) of the circuit breaker (1). Furthermore, the quick-closing contact unit (8) is externally attached to the base (3) of the external operation handle device (2), the limit switch (8a) of the quick-closing contact is linked to the sliding base (6) of the external operation handle device, and the aforementioned quick-closing contact unit is caused to close at an earlier stage than the closing of the main circuit contact of the circuit breaker (1) while turning ON the rotary handle (4) of the external operation handle device (2), corresponding to the optional specifications of an included quick-closing contact function.

Description

technical field [0001] The present invention relates to an auxiliary device for a circuit breaker that is intended to be applied to a circuit breaker for wiring of low-voltage power distribution equipment and an earth leakage circuit breaker, and more particularly to a circuit breaker that is mounted on a circuit breaker and used as a circuit breaker The undervoltage tripping device of the auxiliary device and the external operating handle device. Background technique [0002] As is known, various auxiliary devices are prepared as options for the titled circuit breakers; one such device is an undervoltage trip device. [0003] When the protected circuit voltage (the voltage of the main circuit or the control circuit) drops below a predetermined voltage (for example, within the range of 35% to 85% of the rated voltage), the undervoltage tripping device trips the circuit breaker by As an example of this interruption of the main circuit, there is known a built-in undervoltage ...

AI Technical Summary

Problems solved by technology

[0024] However, in common circuit breakers (see Figure 8 ), the rocker handle is not provided as standard, and when using the undervoltage trip device with early closing contacts, it is necessary to use various circuit breakers with special rotating handles

If the above-mentioned special rotary handle is pre-set in the circuit breaker as standard, under the expectation of adapting to the undervoltage trip device with early closing contacts, there is the following problem, that is, without using the undervoltage trip device with early closing contacts In the case of a buckle device, this specification is redundant, and the cost of the circuit breaker product increases

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