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Circuit breaker

A technology for circuit breakers and disconnecting circuits, applied in circuits, logic controllers for automation/industrial process control, sealed enclosures, etc., can solve the problems of canceling protection, destroying equipment components, etc., and achieve the effect of a simple actuator

Active Publication Date: 2018-05-04
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example, the necessary protection may be canceled and the equipment components may be destroyed as a result

Method used

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Examples

Experimental program
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Embodiment Construction

[0053] figure 1 Functional block representing a circuit breaker LS for a circuit or circuit system, for example for a three-phase system comprising conductors L1, L2, L3 and N, which are connected to the circuit breaker LS and their current flows through the circuit breaker device LS. A sensor device IM is provided in the circuit breaker LS, which determines circuit parameters such as current or / and voltage or / and frequency.

[0054] The sensor device IM is connected to the electronic triggering device ETU, which detects the exceeding of safety parameters. The safety parameter can be a current limit value or / and a current-time-limit value or / and a voltage limit value or / and a mathematical combination thereof.

[0055] The electronic triggering unit ETU is connected to the contacting device SCH, which serves to break the current of the circuit or the circuit system.

[0056]If the electronic triggering unit ETU detects that a parameter, such as a measured value of the sensor...

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PUM

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Abstract

The invention relates to a circuit breaker (LS) for interrupting an electric circuit if settable protective parameters are exceeded. The circuit breaker includes an electronic trip unit (ETU), in which the set protective parameters are stored, with a movable sealing pane (3), which covers at least part of the circuit breaker (LS). The invention is characterized in that the circuit breaker (LS) further includes a sensor (5, 7) with which a first state of the sealing pane (3) can be ascertained; and, the electronic trip unit (ETU) is designed such that changes to the protective parameters are accepted by the electronic trip unit (ETU) only in the first state of the sealing pane (3).

Description

technical field [0001] The invention relates to a circuit breaker according to the preamble of patent claim 1 and a method for a circuit breaker according to the preamble of patent claim 17 . Background technique [0002] A circuit breaker is a protective device that functions like an insurance device. A circuit breaker, also known as a trigger, monitors the current flowing through it via a conductor and switches off when a safety parameter, such as a current limit or a current-time limit, ie a value of current that exists for a certain time period, is exceeded Current or energy flow to a point of consumption or to a user. The disconnection takes place, for example, by opening the contacts of a circuit breaker. [0003] Especially for low-voltage circuits or grids, there are different types of circuit breakers depending on the amount of current specified in the circuit. Circuit breakers in the sense of the present invention are in particular those switches used in low-vol...

Claims

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Application Information

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IPC IPC(8): H01H71/74
CPCH01H71/74H01H2071/7472H01H71/123H01H71/025H05K5/06H05K7/1468H05K7/1484
Inventor A.库普施A.博格瓦特
Owner SIEMENS AG
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