RU81028U1 - CIRCUIT BREAKER HOUSING - Google Patents

Abstract

The circuit breaker case contains a main cover 1; covers 2, 3, 4, 5; base 7. Cover 1 is made with grooves 15 for installing free contacts to perform the function of signaling the position of the main contacts 10 and 11, grooves 16 for installing free contacts for performing the function of signaling automatic shutdown, grooves 31 for installing additional devices, shunt release or minimum release voltage (at the request of the client), made in one dimension. Installation of an independent release (or an undervoltage release) is made in the groove 31 so that the control levers of these releases are in the groove 28. 2 ill.

Description

The utility model relates to housing devices for electrical units, in particular to cases of circuit breakers and can be used to install circuit breakers.

The main part of any circuit breaker is the case. It carries the function of placing and attaching other circuit breaker elements, as well as maintaining the integrity and geometry of the device.

A known box containing a base with mounting elements of a circuit breaker and wiring wires and a rectangular housing with a rectangular hole, forming a detachable connection between themselves by means of elastically snap elements. (Box for circuit breakers of the Tuso series, website address on the Internet: www.elektrokom.ru/shop/index.php?productID=31)

The main disadvantages of this technical solution are the relatively low reliability and ease of use.

The closest in technical essence to the claimed device is an AP50B circuit breaker (TU 16-522.139-78), which is a development of specialists of the Kursk Electric Appliance Plant (Elektroapparat OJSC) (see Index "Directories and Directories on Electrical Engineering". M: Informelectro )

The design of the automatic switch AP50B, designed to protect against short circuit currents, selected for the prototype, contains a housing consisting of a cover and a base.

The following main units are installed in the circuit breaker case: the mechanism of a free release, a contact system, an arcing device, maximum current releases, and free contacts. In the housing can be optionally integrated: a minimum voltage release or an independent release, or a maximum current release in the neutral wire. Additional releases are installed in the near pole to the free trip mechanism instead of the electromagnetic current release.

The disadvantage of such automatic circuit breakers is that with an increase in the currents of the maximum breaking capacity and the rated operating maximum breaking capacity flowing through the circuit breaker, it is necessary to increase the overall dimensions of the arcing chambers with a contact system and, as a result, the overall dimensions of the circuit breaker.

The utility model is based on the task of creating an automatic circuit breaker design, in which the possibility of using unified maximum releases and additional assembly units is achieved, as well as increasing operational reliability for a multi-pole circuit breaker design.

Effect: increasing the current rated maximum breaking capacity of the circuit breaker without increasing its overall, mounting and connecting dimensions due to the unified execution of the housing (covers and base) for different types of maximum releases and additional assembly units.

This is achieved due to the fact that in a circuit breaker containing a case in the form of a base with a cover, according to a utility model, the new one is that it contains a main cover having slots for setting free contacts that perform signaling functions about the position of the main contacts, grooves for installing free contacts that perform the functions of an automatic shutdown alarm, a groove for installing additional trip units made in the same dimensions, a block of maximum releases. In addition, the main cover contains grooves for installing an independent release or an undervoltage release.

Circuit breakers can be equipped with additional devices that expand the operational capabilities of the circuit breaker. Additional devices of the circuit breaker are installed inside the circuit breaker case during its production. In the case of the circuit breaker for installing additional devices, technological grooves are provided, to the right and left of the handle of the switch. Additional devices are installed inside the switch case during its production. The design of the switch housing allows you to install no more than two built-in devices.

When ordering a circuit breaker, the consumer can order the circuit breaker package at his own discretion.

Additional internal devices include:

- shunt trip independent;

- undervoltage release RMN;

- additional contact CD;

- signal contact KS;

The essence of the utility model is presented in figures 1-5.

Figure 1 shows the housing of the circuit breaker automatic, cut, General view.

Figure 2 is the same, local section, side view;

The positions in the figures indicate: main cover 1; covers 2, 3, 4, 5; block of maximum releases 6; base 7; grooves 8; grooves 9; groove 10; groove 11, (for installing an independent release or an undervoltage release).

The device contains a main cover 1; lids 1, 2, 3, 4, 5; block of maximum releases 6; base 7. Cover 1 is made with grooves 8 for installing free contacts to perform the function of signaling the position of the main contacts, grooves 9 for installing free contacts for performing the function of signaling automatic shutdown, with groove 11 for installing an shunt release or undervoltage release (optional) made in one dimension.

Installation of an independent release (or undervoltage release) is made in the groove 11 so that the control levers of these releases are in the groove 10.

The operation of these releases is as follows.

The installation of blocks of maximum releases 6 is performed between the cover of the main 1 and the cover 3.

In circuit breakers for the installation of additional devices technological grooves are provided, to the right and left of the handle of the switch. When ordering a circuit breaker, the consumer can order the circuit breaker package at his own discretion.

The design of the device has sufficient rigidity, provides protection against electromagnetic and magnetic fields, allows you to maximize the use of the device to implement functions.

In the manufacture of the case, high-quality non-combustible materials with high refractory, shockproof characteristics and high mechanical strength are used. When assembling multi-pole switches, each pole is first riveted separately, after which the poles are connected together. Contact clamps, deeply immersed inside the body, provide a high degree of safety in case of accidental contact of a person with the body of the device.

Claims (3)

1. The body of the circuit breaker is automatic, including a base with a cover, characterized in that it contains a main cover having at least grooves for installing free contacts that perform the function of signaling the position of the main contacts, at least grooves for making free contacts that perform functions of automatic shutdown alarm, at least grooves for installing additional releases made in the same dimensions, at least grooves for installing additional devices. 2. The case of the automatic switch according to claim 1, characterized in that an independent release is installed in the slots for the additional devices. 3. The case of the automatic switch according to claim 1, characterized in that in the grooves for additional devices installed undervoltage release.