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Differential thermomagnetic switch

A switch and thermomagnetic technology, applied in the direction of switches with electric heating and electromagnetic release, protection switches, circuit breaker contacts, etc., can solve the problems of high manufacturing and assembly costs, complex switches, etc.

Inactive Publication Date: 2008-02-20
VIMAR SPA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, a major disadvantage of prior art differential thermomagnetic switches is the inclusion of a large number of parts which must be properly assembled in order to ensure quick and safe separation of the electrical contacts of the switch
In addition to making the switch overly complex, this results in higher manufacturing and assembly costs

Method used

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Embodiment Construction

[0031] FIG. 1 shows the complete form of the differential thermomagnetic switch according to the present invention, which is denoted by the reference numeral 1 as a whole.

[0032] The switch 1 has two box-shaped components next to each other: a thermomagnetic switch component 2 and a differential circuit component 100.

[0033] The thermomagnetic switch component 2 includes a double-sided intermediate wall 3, which defines and separates two opposing housings 3f and 3n:

[0034] -The first housing 3f (Figure 2), since it houses the fixed contacts 6f connected to the phase line (power supply line) of the electrical system, it is called the phase housing, and

[0035] -The second housing 3n (Figure 3), since it houses the fixed contact 6n connected to the neutral wire (ground) of the electronic system, it is called the neutral housing.

[0036] Returning to FIG. 1, the housings 3f and 3n are covered by movable covers 4 and 5, respectively.

[0037] Hereinafter, the components of the...

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Abstract

A thermomagnetic switch (1) is described comprising: a box-type body comprising an intermediate wall (3) which defines respective phase and neutral housings (3f, 3n), movable phase and neutral contacts (18f, 18n) destined to come into contact with respective fixed phase and neutral contacts (6f, 6n), a kinematic mechanism connected to the mobile contacts (18n, 18f) to bring them from a closed position to an open position, a push button (11) that can be operated from the outside and that is connected to the kinematic mechanism, and a coupling lever (26) - connected to the kinematic mechanism - which can be operated through the intervention of a thermal (22) and / or of an electromagnetic (50f) and / or of a differential device (100, 50d). The kinematic mechanism comprises a contact-carrying lever (117) made in a single piece and provided with two arms (121), which extend into the phase and neutral housing (3f, 3n). Each arm (121) comprises a seat (118) able to receive the respective movable phase and neutral contact (18f, 18n).

Description

Technical field [0001] The present invention relates to a thermomagnetic or differential thermomagnetic automatic switch that is small in size and particularly suitable for module installation in civil supports and series plates, so as to protect users from short circuits and the automatic The influence of the overload current of the equipment downstream of the switch. Background technique [0002] When a short circuit, overload or leakage current is detected in the equipment downstream of the automatic switch, the differential thermal magnetic switch used to turn on / off the power supply circuit has been widely used in the market. These switches have a high power-off capability, that is, when an abnormality is detected in the downstream equipment, the electrical contacts can be quickly separated. [0003] However, the main disadvantage of the prior art differential thermomagnetic switch is that it includes a large number of components, which must be properly assembled to ensure t...

Claims

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Application Information

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IPC IPC(8): H01H71/00H01H71/10H01H73/52
CPCH02G3/123H01H73/52H01H83/14H01H71/1009H01H71/002H01H73/04
Inventor P·C·古西
Owner VIMAR SPA
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