Adjustable timing switch

Abstract

The invention discloses an adjustable timing switch. The adjustable timing switch comprises a breaker, a timing device and a linkage component, wherein the timing device comprises a circuit assembly and an electromagnetic assembly; the electromagnetic assembly comprises an electromagnetic coil electrically connected with the circuit assembly; a moving armature is arranged inside the electromagnetic coil; the moving armature is in linked matching with a tripping mechanism in the breaker through the linkage component; the circuit assembly comprises a power circuit, a timing circuit and an output tripping circuit; the timing circuit comprises a potentiometer R4, an oscillating capacitor C4 and a timing integrated circuit U2; the timing integrated circuit U2 comprises an input end and an output end; a first pin of the input end is connected with the potentiometer R4; a second pin of the input end is connected with the oscillating capacitor C4; a third pin of the input end is connected with a protective resistor R3; a twelfth pin of the input end is connected with the power circuit; an eighth pin of the output end is connected with the output tripping circuit. The adjustable timing switch can break the breaker at a preset time and enable the break to work for a long time according to different using conditions, so that a timing protection demand is met.

Description

technical field [0001] The invention belongs to the technical field of circuit breakers and switches, in particular to an adjustable timing switch which can manually set the disconnection time according to different usage conditions. Background technique [0002] A circuit breaker in the prior art generally includes a housing, a static and dynamic contact, a static and dynamic contact, an electromagnetic assembly and a tripping mechanism. When the circuit breaker is in the normal working current, the magnetic force generated by it is not enough to drive the iron core in the electromagnetic assembly to move, and when the load current increases to dozens or hundreds of times instantaneously, the magnetic force generated by the coil pulls the armature and quickly strikes off. The buckle mechanism separates the dynamic and static contacts, realizes the disconnection of the circuit, and plays the role of overload protection. However, such a circuit breaker in the prior art does ...

AI Technical Summary

Problems solved by technology

However, this circuit breaker in the prior art does not have a circuit breaker that is set to be disconnected at a fixed time according to the particularity of the use situation.

The circuit breaker switch in the prior art is difficult to meet the use in some specific fields that need to disconnect the circuit at regular intervals

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