NL8000047A - SWITCHING AUTOMATIC. - Google Patents

Description

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Switching machine

The invention relates to an automatic circuit breaker provided with interrupters of the phase contacts and the neutral contact and actuators for the interrupters.

With such circuit breakers, it has hitherto been common practice to carry out both the phase contact and the neutral contact as well as a power interrupter of the same construction with extinguishing chamber, etc.

The drawback of this is that such a switch-type automatic must always be provided with two identical power interrupting devices, which makes the automatic expensive. Moreover, the position of the power circuit breakers makes the machine unnecessarily bulky.

In order to avoid these drawbacks, the invention now aims at a circuit-breaker in which the zero contact interrupter no longer has to consist of a power interrupter, but can only be a simple disconnect switch.

The invention is characterized for this purpose in that the operating element for interrupting the phase contacts and the operating element for interrupting the zero contact interlock, such that the switching off of the phase contacts takes place before the switching off of the zero contact and the switching on of the phase contacts takes place after the activation of the zero-25 contact.

The invention will be elucidated with reference to the drawing.

Figure 1 shows an exploded side view of the automatic switch according to the invention.

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Figure 2 shows a left-hand view of the automatic switch from Figure 1.

Figure 3 shows the same view as in Figure 2, in which the power switch and the disconnecting switch are shown separately from each other.

In figure 1, 1 indicates the interrupting device of the zero contact 2, wherein the zero contact is closed in the drawn position. The zero connection terminals are shown with 3. By turning the operating member 4 counterclockwise and seen as shown in figure 1, the zero contact can be opened after the operating member 4 has passed through an angle β, for example.

In Figs. 2 and 3, in addition to the actuator 4 for the zero contact 2, the actuator 5 is also indicated for the interruption device of the phase contacts (not shown).

The interrupting member 5 now rests against operating member 4 or in a recess 6 which is arranged in operating member 4.

The phase contacts are connected to terminals 7.

The operation of the automatic switch according to the invention is now as follows.

In the position shown in figure 1, both the zero contact and the phase contacts are closed.

If the operating member 4 in figure 1 is now rotated counterclockwise, the operating member 5 of the phase contacts will be taken along.

The switching angle α for interrupting the phase contacts is chosen to be smaller than the switching angle voor for interrupting the zero contact, so that when switching off the operating element 4 switches off an angle β-α later than the operating element 5.

Without manual operation of the operating member 4, the operating member 5 can, however, switch off automatically in the event of, for example, an overload or short circuit.

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Conversely, when switching on again manually, the operating member 4 will first switch on for the operating member 5, i.e. an angle {3-ct earlier.

With this device it is thus achieved that the zero-5 contact can never switch power on or off.

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Claims (5)

1. Automatic circuit breaker provided with interrupting devices of the phase contacts and the neutral contact and operating device for the interrupting devices, characterized in that the actuating device for interrupting the phase contacts and the actuating device for interrupting the zero contact interlock in such a way that the phase contacts are switched off before the neutral contact is switched off and the phase contacts are switched on after the zero-10 contact is switched on. Switching machine according to claim 1, characterized in that the phase contact interrupting actuator is formed by a first toggle switch and the neutral contact interrupting actuator is both formed. 15 is controlled by a second toggle switch, wherein toggle switches can rotate independently about axes parallel to each other or in line with each other, and when the second toggle switch is turned off, the second toggle switch carries the second toggle along when it is switched on. Automatic switch according to claim 1 or 2, characterized in that the interrupter of the phase contacts switches off automatically at a certain load while that of the neutral contact remains switched on. Automatic switch according to one of claims 25 or 2, characterized in that the switch-off angle of the second rocker switch is greater than that of the first rocker switch and the switch-on angle of the second rocker switch is smaller than that of the first rocker switch. 5. Automatic circuit breaker essentially as described in the description and / or as shown in the drawing. 80 0 0 0 47