CN203859087U - Residual current operated circuit breaker with overcurrent protection - Google Patents

Residual current operated circuit breaker with overcurrent protection Download PDF

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Publication number
CN203859087U
CN203859087U CN201420239440.8U CN201420239440U CN203859087U CN 203859087 U CN203859087 U CN 203859087U CN 201420239440 U CN201420239440 U CN 201420239440U CN 203859087 U CN203859087 U CN 203859087U
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China
Prior art keywords
utmost point
arc
contact
pole
striking piece
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CN201420239440.8U
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Chinese (zh)
Inventor
刘和
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Yueqing City Hua Luo Electrical Appliances Co Ltd
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Yueqing City Hua Luo Electrical Appliances Co Ltd
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Priority to CN201420239440.8U priority Critical patent/CN203859087U/en
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Abstract

The utility model relates to a residual current operated circuit breaker with overcurrent protection and mainly solves the technical problem that conventional miniature circuit breakers are low in arc extinguishing efficiency so that the usage performance of the circuit breakers are affected. The residual current operated circuit breaker comprises a shell, an operation mechanism, an L-pole contact mechanism, an N-pole contact mechanism, and a mutual inductor. An L-pole arc extinguishing chamber is arranged in the place of an L-pole fixed contact. An N-pole moving contact is electrically connected with an N-pole outgoing line wiring terminal. An N-pole fixed contact is electrically connected with an N-pole incoming line wiring terminal. An N-pole arc extinguishing mechanism comprises a first arc striking piece, a second arc striking piece, and an N-pole arc extinguishing chamber. One end of the first arc striking piece is connected with the N-pole outgoing line wiring terminal while the other end of the first arc striking piece is connected with the N-pole arc extinguishing chamber. One end of the second arc striking piece is connected with the N-pole fixed contact while the other end of the second arc striking piece is connected with the N-pole arc extinguishing chamber. According to the residual current operated circuit breaker, the N pole and the L pole are both provided with the arc extinguishing mechanisms so that the arc voltage can be increased effectively and the breaking capability and arc extinguishing effect can be improved.

Description

A kind of residual current action breaker with overcurrent protection
Technical field
The utility model relates to a kind of low-voltage electrical apparatus, refers in particular to a kind of residual current action breaker with overcurrent protection.
Background technology
at present, the existing residual current action breaker with overcurrent protection comprises the N utmost point and the L utmost point, and the L utmost point is provided with contact system and arc control device; and do not there is arc-extinguishing mechanism at the N utmost point; therefore, a little less than existing arc voltage, the shortcoming such as the poor and arc extinguishing efficiency of breaking capacity is low.
summary of the invention
In order to overcome deficiency and the defect in background technology; the utility model provides a kind of tripping mechanism of the residual current action breaker with overcurrent protection; solve existing miniature circuit breaker in spray during arc, arc extinguishing fast, thus cause the technical problem of electric arc to damage of product.
The technical solution of the utility model is: a kind of residual current action breaker with overcurrent protection, comprise housing, operating mechanism, L utmost point contact mechanism, N utmost point contact mechanism and instrument transformer, described L utmost point contact mechanism comprises L utmost point moving contact, L utmost point fixed contact, described N utmost point contact mechanism comprises N utmost point moving contact, N utmost point fixed contact, described operating mechanism and L utmost point contact mechanism, N utmost point contact mechanism matches, described L utmost point fixed contact place is provided with L utmost point arc control device, also comprise N utmost point inlet wire binding post and N utmost point outlet binding post, described N utmost point moving contact is electrically connected to N utmost point outlet binding post, described N utmost point fixed contact is electrically connected to N utmost point inlet wire binding post, the described N utmost point is also provided with arc-extinguishing mechanism, described arc-extinguishing mechanism comprises the first arc striking piece, the second arc striking piece and N utmost point arc control device, one end of described the first arc striking piece is connected with N utmost point outlet binding post, the other end of described the first arc striking piece is connected with N utmost point arc control device, one end of described the second arc striking piece is connected with N utmost point fixed contact, the other end is connected with N utmost point arc control device.
Described the first arc striking piece is U-shaped, comprise the first horizontal part, curved portions and the second horizontal part, described the first horizontal part is electrically connected to N utmost point outlet binding post, described the second horizontal part is connected with the upper end of N utmost point arc control device, and described arc part is between the first horizontal part and the second horizontal part and corresponding with described N utmost point moving contact, N utmost point fixed contact.
Described the first horizontal part, curved portions and the second horizontal part one are formed by connecting, and described the first arc striking piece inner side is provided with the spacer matching with it.
Weld mutually with fixed contact one end of described the second arc striking piece, and the other end is connected with the lower end of N utmost point arc control device.
Described N utmost point arc control device comprise some the first arc extinguishing grid pieces and the second arc extinguishing grid pieces, described the first arc extinguishing grid pieces is positioned at the upper end of N utmost point arc control device corresponding with the first arc striking piece, the left end of the left end of described the second arc extinguishing grid pieces and the first arc extinguishing grid pieces is corresponding is outwardly, and right-hand member corresponding being of the right-hand member of described the second arc extinguishing grid pieces and the first arc extinguishing grid pieces inwardly concaves.
Described N utmost point fixed contact comprises contact portion, contact and connecting portion, and described contact is installed in contact portion, and described contact portion is bending shape, and described connecting portion is connected with contact portion and is electrically connected to N utmost point inlet wire binding post.
The beneficial effects of the utility model: at the N utmost point and L, arc-extinguishing mechanism is extremely all set because this residual current action breaker adopts, can effectively improves striking voltage, improve breaking capacity and arc quenching effect.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of another angle of the utility model.
Fig. 3 is the structure enlarged drawing at I place in the utility model Fig. 1.
In figure, housing 1, operating mechanism 2, instrument transformer 3, L utmost point moving contact 4, L utmost point fixed contact 5, N utmost point moving contact 6, N utmost point fixed contact 7, contact portion 71, contact 72, connecting portion 73, L utmost point arc control device 8, N utmost point inlet wire binding post 9, N utmost point outlet binding post 10, the first arc striking piece 11, the first horizontal parts 111, curved portions 112, the second horizontal part 113, the second arc striking pieces 12, N utmost point arc control device 13, the first arc extinguishing grid pieces 131, the second arc extinguishing grid pieces 132, spacer 14.
Embodiment
For accompanying drawing, embodiment of the present utility model is described further below:
As shown in the figure, a kind of residual current action breaker with overcurrent protection, comprise housing 1, operating mechanism 2, L utmost point contact mechanism, N utmost point contact mechanism and instrument transformer 3, described L utmost point contact mechanism comprises L utmost point moving contact 4, L utmost point fixed contact 5, described N utmost point contact mechanism comprises N utmost point moving contact 6, N utmost point fixed contact 7, described operating mechanism and L utmost point contact mechanism, N utmost point contact mechanism matches, described L utmost point fixed contact 5 places are provided with L utmost point arc control device 8, described N utmost point place is also provided with N utmost point inlet wire binding post 9 and N utmost point outlet binding post 10, described N utmost point moving contact 6 is electrically connected to N utmost point outlet binding post 10, described N utmost point fixed contact 7 is electrically connected to N utmost point inlet wire binding post 9, the described N utmost point is also provided with arc-extinguishing mechanism, described arc-extinguishing mechanism comprises the first arc striking piece 11, the second arc striking piece 12 and N utmost point arc control device 13, one end of described the first arc striking piece 11 is connected with N utmost point outlet binding post 10, the other end of described the first arc striking piece 11 is connected with N utmost point arc control device 13, one end of described the second arc striking piece 12 is connected with N utmost point fixed contact 7, the other end is connected with N utmost point arc control device 13.According to such scheme, because adopting, this residual current action breaker, at the N utmost point and L, arc-extinguishing mechanism is extremely all set, can effectively improve striking voltage, improve breaking capacity and arc quenching effect.
As shown in the figure, described the first arc striking piece 11 is U-shaped, comprise the first horizontal part 111, curved portions 112 and the second horizontal part 113, described the first horizontal part 111 is electrically connected to N utmost point outlet binding post 10, described the second horizontal part 113 is connected with the upper end of N utmost point arc control device 13, and described curved portions 112 is between the first horizontal part 111 and the second horizontal part 113 and corresponding with described N utmost point moving contact 6, N utmost point fixed contact 7.
As shown in the figure, described the first horizontal part 111, curved portions 112 and the second horizontal part 113 one are formed by connecting, and described the first arc striking piece 11 inner sides are provided with the spacer 14 matching with it.One is formed by connecting, and has easy to process.
As shown in the figure, weld mutually with fixed contact one end of described the second arc striking piece 12, and the other end is connected with the lower end of N utmost point arc control device 13.
As shown in the figure, described N utmost point arc control device 13 comprise some the first arc extinguishing grid pieces 131 and the second arc extinguishing grid pieces 132, described the first arc extinguishing grid pieces 131 is positioned at the upper end of N utmost point arc control device 13 corresponding with the first arc striking piece 11, the left end of the left end of described the second arc extinguishing grid pieces 132 and the first arc extinguishing grid pieces 131 is corresponding is outwardly, and right-hand member corresponding being of the right-hand member of described the second arc extinguishing grid pieces 132 and the first arc extinguishing grid pieces 131 inwardly concaves.
As shown in the figure, described N utmost point fixed contact 7 comprises contact portion 71, contact 72 and connecting portion 73, described contact 72 is installed in contact portion 71, and described contact portion 71 is bending shape, and described connecting portion 73 is connected with contact portion 71 and is electrically connected to N utmost point inlet wire binding post 9.
Embodiment should not be considered as the restriction to utility model, but any improvement of doing based on spirit of the present utility model, all should be within protection range of the present utility model.

Claims (6)

1. the residual current action breaker with overcurrent protection, comprise housing (1), operating mechanism (2), L utmost point contact mechanism, N utmost point contact mechanism and instrument transformer (3), described L utmost point contact mechanism comprises L utmost point moving contact (4), L utmost point fixed contact (5), described N utmost point contact mechanism comprises N utmost point moving contact (6), N utmost point fixed contact (7), described operating mechanism and L utmost point contact mechanism, N utmost point contact mechanism matches, described L utmost point fixed contact (5) locates to be provided with L utmost point arc control device (8), described N utmost point place is also provided with N utmost point inlet wire binding post (9) and N utmost point outlet binding post (10), described N utmost point moving contact (6) is electrically connected to N utmost point outlet binding post (10), described N utmost point fixed contact (7) is electrically connected to N utmost point inlet wire binding post (9), it is characterized in that: the described N utmost point is also provided with arc-extinguishing mechanism, described arc-extinguishing mechanism comprises the first arc striking piece (11), the second arc striking piece (12) and N utmost point arc control device (13), one end of described the first arc striking piece (11) is connected with N utmost point outlet binding post (10), the other end of described the first arc striking piece (11) is connected with N utmost point arc control device (13), one end of described the second arc striking piece (12) is connected with N utmost point fixed contact (7), the other end is connected with N utmost point arc control device (13).
2. the residual current action breaker with overcurrent protection according to claim 1, it is characterized in that: described the first arc striking piece (11) is U-shaped, comprise the first horizontal part (111), curved portions (112) and the second horizontal part (113), described the first horizontal part (111) is electrically connected to N utmost point outlet binding post (10), described the second horizontal part (113) is connected with the upper end of N utmost point arc control device (13), described curved portions (112) be positioned between the first horizontal part (111) and the second horizontal part (113) and with described N utmost point moving contact (6), N utmost point fixed contact (7) is corresponding.
3. the residual current action breaker with overcurrent protection according to claim 2; it is characterized in that: described the first horizontal part (111), curved portions (112) and the second horizontal part (113) one are formed by connecting, and described the first arc striking piece (11) inner side is provided with the spacer (14) matching with it.
4. according to the residual current action breaker with overcurrent protection described in claim 1 or 2 or 3, it is characterized in that: weld mutually with fixed contact one end of described the second arc striking piece (12), the other end is connected with the lower end of N utmost point arc control device (13).
5. according to the residual current action breaker with overcurrent protection described in claim 1 or 2 or 3, it is characterized in that: described N utmost point arc control device (13) comprise some the first arc extinguishing grid pieces (131) and the second arc extinguishing grid pieces (132), described the first arc extinguishing grid pieces (131) is positioned at the upper end of N utmost point arc control device (13) corresponding with the first arc striking piece (11), the left end of the left end of described the second arc extinguishing grid pieces (132) and the first arc extinguishing grid pieces (131) is corresponding is outwardly, right-hand member corresponding being of the right-hand member of described the second arc extinguishing grid pieces (132) and the first arc extinguishing grid pieces (131) inwardly concaves.
6. according to the residual current action breaker with overcurrent protection described in claim 1 or 2 or 3; it is characterized in that: described N utmost point fixed contact (7) comprises contact portion (71), contact (72) and connecting portion (73); described contact (72) is installed in contact portion (71); described contact portion (71) is bending shape, and described connecting portion (73) is connected with contact portion (71) and is electrically connected to N utmost point inlet wire binding post (9).
CN201420239440.8U 2014-05-12 2014-05-12 Residual current operated circuit breaker with overcurrent protection Active CN203859087U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201420239440.8U CN203859087U (en) 2014-05-12 2014-05-12 Residual current operated circuit breaker with overcurrent protection

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201420239440.8U CN203859087U (en) 2014-05-12 2014-05-12 Residual current operated circuit breaker with overcurrent protection

Publications (1)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105185671A (en) * 2015-10-30 2015-12-23 上海电科电器科技有限公司 Circuit breaker and baffles thereof
WO2018130007A1 (en) * 2017-01-13 2018-07-19 乐清市也为电气有限公司 Electrical switch

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105185671A (en) * 2015-10-30 2015-12-23 上海电科电器科技有限公司 Circuit breaker and baffles thereof
WO2018130007A1 (en) * 2017-01-13 2018-07-19 乐清市也为电气有限公司 Electrical switch

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