Small-sized earth leakage circuit breaker
An earth leakage circuit breaker, a small technology, is applied in the direction of multiple unbalanced current/voltage action switches, protection switch operation/release mechanisms, etc. Inconsistent time, complex operating mechanism, complicated assembly and other problems, to achieve the effect of low cost, simple operating mechanism and convenient assembly
Inactive Publication Date: 2012-01-25
GACIA ELECTRICAL APPLIANCE
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Problems solved by technology
[0004] The problem to be solved by the present invention is to improve the inconsistency of switching time between the L-pole movable contact and the N-pole movable contact of the existing leakage circuit breaker, and at the same time improve the problems of complicated operating mechanism, high cost, and complicated assembly.
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[0019] A small leakage circuit breaker of the present invention will be further described below in conjunction with the accompanying drawings.
[0020] Such as figure 1 , figure 2 , image 3 , Figure 4 As shown in , a small leakage circuit breaker of this embodiment includes a housing, an operating mechanism, a double metal sheet 8 installed in the housing, an electromagnetic coil 9, a terminal block 12, a zero-sequence current transformer 15, wires and other Electronic components, the housing includes a middle shell 10 and shells installed on both sides of the middle shell 10, the double gold sheet 8 and the electromagnetic coil 9 are located on the same side of the middle shell 10, the operating mechanism includes a handle 1, and The handle 1 rotates the connected lever 2, and drives the L-pole moving contact bracket 5 and the L-pole moving contact 4 that rotate coaxially with the lever 2 through the shaft 3. Compared with the L-pole moving contact bracket 5 and the L-p...
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The invention discloses a small-sized earth leakage circuit breaker, which comprises a shell, an operating mechanism, and a bimetallic strip, an electromagnetic coil, a wiring board, a zero-sequence current transformer and an electric wire which are arranged in the shell, wherein the shell comprises a middle shell and an outer shell which is arranged on the two sides of the middle shell; the operating mechanism comprises a handle, a lever, an L pole moving contact bracket, an N pole moving contact bracket, an L pole moving contact and an N pole moving contact; the lever is connected with the handle; the L pole moving contact bracket is connected to the lever through a shaft and synchronously rotates with the lever; the N pole moving contact bracket is arranged on the other side of the middle shell opposite to the lever; the L pole moving contact and the N pole moving contact are arranged on the L pole moving contact bracket and the N pole moving contact bracket respectively; the shaft passes through the middle shell and acts on the N pole moving contact bracket; the lever drives the N pole moving contact bracket through the shaft and synchronously rotates the N pole moving contact bracket with the L pole moving contact bracket; and the middle shell is provided with a slotted hole which is suitable for the shaft to move. The small-sized earth leakage circuit breaker has the advantages of more consistent switching time of the L pole moving contact and the N pole moving contact, easier operating mechanism, lower cost and high convenience in assembly.
Description
technical field [0001] The invention relates to a circuit switch, in particular to a leakage circuit breaker. Background technique [0002] Leakage circuit breaker is a switch that can automatically operate when the leakage current in the circuit exceeds a predetermined value. It is a widely used product that can protect the safety of people and electrical appliances. [0003] The existing leakage circuit breaker includes a housing, an operating mechanism, a double gold sheet installed in the housing, an electromagnetic coil, a wiring board, a zero-sequence current transformer, wires and other electronic components, and the housing includes a middle housing and The shells installed on both sides of the middle shell, the double gold sheet and the electromagnetic coil are located on the same side of the middle shell, the operating mechanism includes a handle, a lever connected to the handle in rotation, and the L pole that rotates coaxially with the lever is driven by the s...
Claims
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Login to View More IPC IPC(8): H01H71/40H01H83/14
Inventor 李金兰云生
Owner GACIA ELECTRICAL APPLIANCE