CN205920945U - Take residual current protection's moulded case circuit -breaker - Google Patents

Abstract

The utility model discloses a take residual current protection's moulded case circuit -breaker, including the plastic casing main part, the upper portion of plastic casing main part is equipped with the power cord and connects the hole, and the lower part is equipped with the load line and connects the hole, the intermediate position of plastic casing main part is equipped with the switch, the left side of switch is equipped with the trip push button, and the right side is instructed the button and is leaked the electric test button to being equipped with specified surplus action current adjustment knob, non - time delay and time delay time adjustment button, electric leakage action down in proper order from last. This take residual current protection's moulded case circuit -breaker has overload, short circuit and undervoltage protection function, can protect circuit and electrical power unit not to receive the damage, simultaneously, can provide protection against indirect contact to the people, the fire hazard that the earth fault of the long -term existence that can also can not detect out the electric current protection probably arouses provides the protection, when other protection device were malfunctioning, specified surplus action current can directly play supplementary protection for 30mA's electric leakage circuit breaker.

Description

A kind of moulded case circuit breaker with residual current protecting

Technical field

This utility model belongs to breaker technical field and in particular to a kind of plastic casing type with residual current protecting is broken Road device.

Background technology

Chopper be refer to the electric current that closes, carry and cut-off under normal loop condition and can close, regulation when The interior switching device carrying and cut-off the electric current under abnormal loop condition.Chopper is divided into primary cut-out by its range With low-voltage circuit breaker, high-low pressure identification of boundaries is fuzzyyer, typically by the referred to as High-Voltage Electrical Appliances of more than 3kv.Chopper can be used to Distribution electric energy, infrequently starts asynchronous motor, carries out protection to power circuit and motor etc., when their generations are serious When overload or the fault such as short-circuit and under-voltage can automatic shutdown circuit, its function is equivalent to Fuse switch and crosses underheat relay The combination of device etc..And typically do not need to change parts after disjunction fault current.At present, obtain a wide range of applications. Electricity generation, conveying, use in, distribution is an extremely important link.Current chopper does not carry residual current protecting Function.A kind of moulded case circuit breaker with residual current protecting is proposed for this.

Content of the invention

The purpose of this utility model is to provide a kind of moulded case circuit breaker with residual current protecting, on solving State the problem proposing in background technology.

For achieving the above object, this utility model provides following technical scheme: outside a kind of plastics with residual current protecting Shell type breaker, including cabinet main body, the top of described cabinet main body is provided with power line and connects hole, and bottom is provided with load Line connects hole, and the centre position of described cabinet main body is provided with switch, and the left side of described switch is provided with trip push button, and right side is from upper To under be sequentially provided with rated residual operating current adjustment knob, non-delayed and delay time adjustment button, electric leakage action instruction button With leak(age) test button.

Preferably, described power line connects hole and load line connects hole and is disposed as 3, and is placed equidistant in interval.

Technique effect of the present utility model and advantage: this moulded case circuit breaker with residual current protecting, had Load, short circuit and under-voltage protection function, energy protection circuit and power-supply device are without damage；Meanwhile, people can be provided mediate contact to protect Shield, the fire hazard that the long-standing earth fault that current protection can not detect may can also be caused provides protection； In other protection device failures, rated residual operating current is that the RCCB of 30ma can directly play supplementary protection.

Brief description

Fig. 1 is structural representation of the present utility model.

In figure: 1 cabinet main body, 2 power lines connect hole, 3 load lines connect hole, 4 switches, 5 trip push buttons, 6 specified residues Action current adjustment knob, 7 non-delayed and delay time adjustment button, 8 electric leakage action instruction buttons, 9 leak(age) test buttons.

Specific embodiment

Below in conjunction with the accompanying drawing in this utility model embodiment, the technical scheme in this utility model embodiment is carried out Clearly and completely description is it is clear that described embodiment is only a part of embodiment of this utility model rather than whole Embodiment.Based on the embodiment in this utility model, those of ordinary skill in the art are not under the premise of making creative work The every other embodiment being obtained, broadly falls into the scope of this utility model protection.

This utility model provides a kind of moulded case circuit breaker with residual current protecting as shown in Figure 1, including Cabinet main body 1, the top of described cabinet main body 1 is provided with power line and connects hole 2, and bottom is provided with load line and connects hole 3, described Power line connects hole 2 and load line connects hole 3 and is disposed as 3, and is placed equidistant in interval, the centre of described cabinet main body 1 Position is provided with switch 4, and the left side of described switch 4 is provided with trip push button 5, high current instantaneous trip function, when breaker closing, Or operationally, such as run into Short-Circuit High Current, breaker magnetic tripping mechanism can direct trip, the relatively reliable safety of duplicate protection, Right side is sequentially provided with rated residual operating current adjustment knob 6, non-delayed and delay time adjustment button 7, electric leakage from top to bottom Action instruction button 8 and leak(age) test button 9, have overload, short circuit and under-voltage protection function, energy protection circuit and power-supply device are not It is damaged；Meanwhile, people can be provided mediate contact to protect, the long-standing ground connection that current protection can not can also be detected The fire hazard that fault may cause provides protection；In other protection device failures, rated residual operating current is 30ma's RCCB can directly play supplementary protection.

Finally it is noted that the foregoing is only preferred embodiment of the present utility model, it is not limited to this Utility model, although being described in detail to this utility model with reference to the foregoing embodiments, for those skilled in the art For, it still can be modified to the technical scheme described in foregoing embodiments, or to wherein some technical characteristics Carry out equivalent, all within spirit of the present utility model and principle, any modification, equivalent substitution and improvement made etc., all Should be included within protection domain of the present utility model.

Claims (2)

1. a kind of moulded case circuit breaker with residual current protecting, including cabinet main body (1) it is characterised in that: institute The top stating cabinet main body (1) is provided with power line and connects hole (2), and bottom is provided with load line and meets hole (3), described cabinet master The centre position of body (1) is provided with switch (4), and the left side of described switch (4) is provided with trip push button (5), and right side is from top to bottom successively It is provided with rated residual operating current adjustment knob (6), non-delayed and delay time adjustment button (7), electric leakage action instruction button (8) With leak(age) test button (9).

2. a kind of moulded case circuit breaker with residual current protecting according to claim 1 it is characterised in that: described Power line connects hole (2) and load line connects hole (3) and is disposed as 3, and is placed equidistant in interval.