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Earth Leakage Breakers (Low Capacity)（Mounting Method：Fasten With Screws）

Earth Leakage Circuit Breakers (ELCB), also known as an earth leakage switch or earth leakage protector, is an electrical safety device that detects and protects against electrical shock hazards caused by leakage current. When selecting an Earth Leakage Circuit Breaker (ELCB), it is crucial to consider factors such as Ampere frame, Number of Poles, Rate Current, Rate Operating, Voltage, Mounting Method (e.g., DIN rail mount, Fasten with screws, and etc.), and Size (height , width and depth). These considerations are vital for ensuring the production of high-quality products. We highly recommend reputable brands like MITSUBISHI , FUJI ELECTRIC , and NITTO KOGYO
Take advantage of the convenience of FREE SHIPPING and NO MINIMUM ORDER on the Earth Leakage Circuit Breaker (ELCB). If you have any doubts or require assistance in choosing the right product, our experts are readily available to provide advice and guidance.

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Brand	DONG A ELECTRIC DEVICE (2) JINHUENG ELEC (0) LSIS (0) MITSUBISHI (14) SEOUL INDUSTRIAL ELECTRIC (0)
CAD	2D 3D
Days to Ship	All 4 Day(s) or Less 7 Day(s) or Less 10 Day(s) or Less 14 Day(s) or Less 20 Day(s) or Less Others

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Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges

MITSUBISHI

Size as is, increased blocking performance. (general-purpose product)

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
-	50	50	30	3	AC100 to 440	15 ～ 50	500	Fasten With Screws	PSE	130	90	90	Available	Surface type

From: 4,376,250 VND
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Earth Leakage Circuit Breakers (ELCB) NV-L Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
30AF or less	1.5	1.5	-	2	AC100 ～ AC100-200	15 ～ 30	10 ～ 30	Fasten With Screws	PSE / CE / TUV	70	32	46.5	Available	Surface type

From: 813,750 VND
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Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV125-CV

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
100AF to 199AF	30	30	10	3	AC100-440	60 ～ 125	30 ～ 100· 200· 500 switch	Fasten With Screws	PSE	130	90	90	Available	Surface type

From: 2,056,250 VND
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Earth Leakage Circuit Breakers (ELCB) NV-SW Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
400AF or higher	85	85	45	3	AC100-440	250 ～ 400	30 ～ 100· 200· 500 switch	Fasten With Screws	-	257	140	155	Available	Surface type

From: 14,480,000 VND
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Earth Leakage Circuit Breakers (ELCB) NV-SVU Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
100AF to 199AF	50	-	30	3	AC120-480	60 ～ 100	30 ～ 100· 200· 500 switch	Fasten With Screws	PSE / CE / TUV / CCC	160	90	90	Available	Surface type

From: 14,880,000 VND
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Earth Leakage Breaker NV-S Class (General-Purpose Product) High Harmonics/ Surges Compatible NV250-SV

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
Other	85	85	36	3	AC100-440	125 ～ 250	30 ～ 100· 200· 500 switch	Fasten With Screws	-	165	105	92	Available	Surface type

From: 5,285,000 VND
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Distribution Board, Earth Leakage Circuit Breaker DSB Series (30/50AF)

DONG A ELECTRIC DEVICE

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
30AF or less / 50AF	-	-	-	2 / 3 / 4	AC220 ～ AC460	15 ～ 50	15, 30 ～ 30,100/200/500	Fasten With Screws	-	80	35 ～ 73.5	76	-	Surface type

From: 631,331 VND
Days to Ship: Số ngày giao hàng: 10 Day(s)

10 Day(s)

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Earth Leakage Circuit Breaker NV-S Class (Economy Model) Compatible With High Harmonics And Surges NV250-CV

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
Other	36	36	25	3	AC100-440	125 ～ 250	30	Fasten With Screws	-	165	105	92	Available	Surface type

From: 3,390,000 VND
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Earth Leakage Circuit Breakers (ELCB) NV630-CW Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
400AF or higher	-	50	36	3	AC100-440	500	100· 200· 500 switch	Fasten With Screws	CE	257	140	155	Available	Surface type

From: 19,737,500 VND
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Distribution Board, Earth Leakage Circuit Breaker (DEN Series)

DONG A ELECTRIC DEVICE

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
30AF or less	-	-	-	2	AC220	15 ～ 30	15 ～ 30	Fasten With Screws	-	70 ～ 82	33 ～ 62	56.5	-	Surface type

From: 395,765 VND
Days to Ship: Số ngày giao hàng: 10 Day(s)

10 Day(s)

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Earth Leakage Circuit Breakers (ELCB) NV-SEW Series 400AF High Amp

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
400AF or higher	85	85	50	3	AC100-440	800	100· 200· 500 switch	Fasten With Screws	CE	275	210	155	Available	Surface type

From: 34,525,000 VND
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Earth Leakage Circuit Breakers (ELCB) NV-HVU Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
100AF to 199AF	100	-	50	3	AC120-480	60 ～ 100	30 ～ 100· 200· 500 switch	Fasten With Screws	PSE / CE / TUV / CCC	160	90	90	Available	Surface type

From: 18,595,000 VND
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Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
400AF or higher	85	85	50	3	AC100-440 ～ AC200-440	400	30 ～ 100· 200· 500 switch	Fasten With Screws	-	257	140	155	Available	Surface type

From: 18,840,000 VND
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UL 489 Listed No-Fuse Circuit Breaker With Earth Leakage Protection (Compatible with High Harmonics And Surges) NV250-CVFU

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
Other	65	-	36	3	AC120-480	200 ～ 250	100· 200· 500 switch	Fasten With Screws	CE / TUV / CCC	185	105	92	Available	Surface type

From: 25,412,500 VND
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Leakage breaker NV-S class (general-purpose product) Harmonic/surge compatible type NV630-SW

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
400AF or higher	85	85	50	3	AC100-440	500 ～ 600	100· 200· 500 switch	Fasten With Screws	CE	257	140	155	Available	Surface type

From: 27,045,000 VND
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Earth Leakage Circuit Breakers (ELCB) NV-NCV Series NV125-NCV

MITSUBISHI

Ampere frame AF	Rated block capacity AC 100 V(kA)	Rated block capacity AC 200 V(kA)	Rated block capacity AC 400 V(kA)	Number of Poles	Rated Operating Voltage(V)	Rated Current(A)	rate sensitivity current(mA)	Mounting Method	Representative Standard	Dimension height(mm)	Dimension width(mm)	Dimension depth(mm)	Rated block capacity, voltages except VAC 100/200/400, VDC 250	Connection Method
100AF to 199AF	-	-	-	3	AC100/200	75	100· 200· 500 switch	Fasten With Screws	PSE	130	90	90	-	Surface type

From: 5,517,500 VND
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BrandNhãn hiệu
Product SeriesDòng sản phẩm
From
Days to ShipSố ngày giao hàng
Ampere frame AF
Rated block capacity AC 100 V(kA)
Rated block capacity AC 200 V(kA)
Rated block capacity AC 400 V(kA)
Number of Poles
Rated Operating Voltage(V)
Rated Current(A)
rate sensitivity current(mA)
Mounting Method
Representative Standard
Dimension height(mm)
Dimension width(mm)
Dimension depth(mm)
Rated block capacity, voltages except VAC 100/200/400, VDC 250
Connection Method

	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare	You can add up to 6 items per a category to the compare list.Compare
BrandNhãn hiệu	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI	DONG A ELECTRIC DEVICE	MITSUBISHI	MITSUBISHI	DONG A ELECTRIC DEVICE	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI	MITSUBISHI
Product SeriesDòng sản phẩm	Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges	Earth Leakage Circuit Breakers (ELCB) NV-L Series	Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV125-CV	Earth Leakage Circuit Breakers (ELCB) NV-SW Series	Earth Leakage Circuit Breakers (ELCB) NV-SVU Series	Earth Leakage Breaker NV-S Class (General-Purpose Product) High Harmonics/ Surges Compatible NV250-SV	Distribution Board, Earth Leakage Circuit Breaker DSB Series (30/50AF)	Earth Leakage Circuit Breaker NV-S Class (Economy Model) Compatible With High Harmonics And Surges NV250-CV	Earth Leakage Circuit Breakers (ELCB) NV630-CW Series	Distribution Board, Earth Leakage Circuit Breaker (DEN Series)	Earth Leakage Circuit Breakers (ELCB) NV-SEW Series 400AF High Amp	Earth Leakage Circuit Breakers (ELCB) NV-HVU Series	Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series	UL 489 Listed No-Fuse Circuit Breaker With Earth Leakage Protection (Compatible with High Harmonics And Surges) NV250-CVFU	Leakage breaker NV-S class (general-purpose product) Harmonic/surge compatible type NV630-SW	Earth Leakage Circuit Breakers (ELCB) NV-NCV Series NV125-NCV
From	4,376,250 VND	813,750 VND	2,056,250 VND	14,480,000 VND	14,880,000 VND	5,285,000 VND	631,331 VND	3,390,000 VND	19,737,500 VND	395,765 VND	34,525,000 VND	18,595,000 VND	18,840,000 VND	25,412,500 VND	27,045,000 VND	5,517,500 VND
Days to ShipSố ngày giao hàng	Quote	Quote	Quote	Quote	Quote	Quote	10 Day(s)	Quote	Quote	10 Day(s)	Quote	Quote	Quote	Quote	Quote	Quote
Ampere frame AF	-	30AF or less	100AF to 199AF	400AF or higher	100AF to 199AF	Other	30AF or less / 50AF	Other	400AF or higher	30AF or less	400AF or higher	100AF to 199AF	400AF or higher	Other	400AF or higher	100AF to 199AF
Rated block capacity AC 100 V(kA)	50	1.5	30	85	50	85	-	36	-	-	85	100	85	65	85	-
Rated block capacity AC 200 V(kA)	50	1.5	30	85	-	85	-	36	50	-	85	-	85	-	85	-
Rated block capacity AC 400 V(kA)	30	-	10	45	30	36	-	25	36	-	50	50	50	36	50	-
Number of Poles	3	2	3	3	3	3	2 / 3 / 4	3	3	2	3	3	3	3	3	3
Rated Operating Voltage(V)	AC100 to 440	AC100 ～ AC100-200	AC100-440	AC100-440	AC120-480	AC100-440	AC220 ～ AC460	AC100-440	AC100-440	AC220	AC100-440	AC120-480	AC100-440 ～ AC200-440	AC120-480	AC100-440	AC100/200
Rated Current(A)	15 ～ 50	15 ～ 30	60 ～ 125	250 ～ 400	60 ～ 100	125 ～ 250	15 ～ 50	125 ～ 250	500	15 ～ 30	800	60 ～ 100	400	200 ～ 250	500 ～ 600	75
rate sensitivity current(mA)	500	10 ～ 30	30 ～ 100· 200· 500 switch	30 ～ 100· 200· 500 switch	30 ～ 100· 200· 500 switch	30 ～ 100· 200· 500 switch	15, 30 ～ 30,100/200/500	30	100· 200· 500 switch	15 ～ 30	100· 200· 500 switch	30 ～ 100· 200· 500 switch	30 ～ 100· 200· 500 switch	100· 200· 500 switch	100· 200· 500 switch	100· 200· 500 switch
Mounting Method	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws	Fasten With Screws
Representative Standard	PSE	PSE / CE / TUV	PSE	-	PSE / CE / TUV / CCC	-	-	-	CE	-	CE	PSE / CE / TUV / CCC	-	CE / TUV / CCC	CE	PSE
Dimension height(mm)	130	70	130	257	160	165	80	165	257	70 ～ 82	275	160	257	185	257	130
Dimension width(mm)	90	32	90	140	90	105	35 ～ 73.5	105	140	33 ～ 62	210	90	140	105	140	90
Dimension depth(mm)	90	46.5	90	155	90	92	76	92	155	56.5	155	90	155	92	155	90
Rated block capacity, voltages except VAC 100/200/400, VDC 250	Available	Available	Available	Available	Available	Available	-	Available	Available	-	Available	Available	Available	Available	Available	-
Connection Method	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type	Surface type

Loading...Tải…

ConfigureTạo

Specification/DimensionsĐặc điểm kỹ thuật / Kích thướcĐặc điểm kỹ thuật / Kích thước

Ampere frame AF
- 30AF or less
- 50AF
- 60AF
- 100AF to 199AF
- 400AF or higher
- Other
ClearTrống

Rated block capacity AC 100 V(kA)
1.5

2.5

7.5

10

15

25

30

36

50

65

85

100
ClearTrống

Rated block capacity AC 200 V(kA)
1.5

2.5

7.5

10

15

25

30

36

50

85
ClearTrống

Rated block capacity AC 400 V(kA)
5

7.5

10

25

30

36

45

50
ClearTrống

Number of Poles
- 2
- 3
- 4
ClearTrống

Rated Operating Voltage(V)
AC100

100-440V

AC100-440

100-240V

AC100-240

AC100-200

AC100 to 200

AC100/200

AC 100–240

AC100 to 440

AC120-480

AC120-240

200-440

AC200-440

220V

AC220

460V

AC460
ClearTrống

Rated Current(A)
5

5A

10

10A

15

15A

16A

20

20A

30

30A

32A

40

40A

50

50A

60

75

100

125

150

175

200

225

250

300

350

400

500

600

800
ClearTrống

rate sensitivity current(mA)
10

15

15MA

15, 30

15/30

30

30MA

30,100/200/500

50

100

100/200/500 switching

100· 200· 500 switch

100.200.500

200

500
ClearTrống

Mounting Method
- DIN rail mount
- Fasten With Screws
- DIN/Screw retention
ClearTrống

Representative Standard
- PSE
- CE
- TUV
- CCC
ClearTrống

Dimension height(mm)
70

72

80

82

100

120

130

150

160

165

185

257

275
ClearTrống

Dimension width(mm)
32

33

35

36

40

54

60

62

73.5

75

90

105

120

140

210
ClearTrống

Dimension depth(mm)
46.5

56.5

68

73.5

76

90

92

155
ClearTrống

Rated block capacity, voltages except VAC 100/200/400, VDC 250
- Available
ClearTrống

Connection Method
- Surface type
ClearTrống

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FAQ Earth Leakage Breakers (Low Capacity)

Question: What is the function and capacity of an Earth Leakage Circuit Breaker (ELCB)?: Answer: An Earth Leakage Circuit Breaker (ELCB) is a crucial safety device in electrical installations. Its primary function is to protect individuals from electric shock by automatically disconnecting the power supply when a fault occurs. ELCBs are designed to detect imbalances in the current flowing between live and neutral conductors. When a leakage current exceeds its rated value (typically 30mA or 100mA), the ELCB trips, interrupting the circuit and preventing potentially fatal injuries. This rapid response time ensures immediate protection against electric shock hazards.
Question: What are the typical reasons for an ELCB to trip, and how does one troubleshoot it?: Answer: ELCB Tripping: Reasons and Troubleshooting
Common Reasons:
1.Earth Leakage: Current flows through unintended path (faulty appliance, wiring, water).
2.Circuit Overload: Current exceeds ELCB's rating (too many appliances).
3.Nuisance Trips: High sensitivity, electrical noise, power surges.
4.Troubleshooting:

Identify affected circuit and appliances.
1.Turn off all appliances and reset ELCB.
2.Switch on appliances one by one to find the culprit.
3.Repair/replace faulty appliance or fix wiring.
4.Test ELCB again with all appliances on.
Question: How does one determine the appropriate tripping capacity and minimum rating for an ELCB?: Answer: 1. Tripping Capacity: This depends on potential fault currents and the maximum allowable leakage. Factors include:
- Fault Current Loop Impedance: The resistance of the path the fault current takes to Earth, influencing how quickly the ELCB trips.
- Maximum Earth Fault Current: The highest current the ELCB should allow to flow before tripping, typically 30mA or 100mA.

2.Minimum Current Rating: This is based on the circuit's maximum current demand and needs to be equal to or higher than the expected circuit load. Factors include:
- Circuit Load: The total current drawn by all appliances connected to the circuit.
- Diversity Factor: Considers that all appliances won't operate at maximum load simultaneously.
Question: What are the standard sizes of earth leakage, and how do you calculate the correct size for your needs?: Answer: Earth leakage circuit breakers (ELCBs) come in a range of standard sizes, typically specified by their rated current (In) and tripping sensitivity (IΔn). Common sizes include:
1.Current (In): 16A, 20A, 25A, 32A, 40A, 63A, 80A, 100A, 125A
2.Sensitivity (IΔn): 30mA, 100mA, 300mA

Choosing the correct size for your needs involves two main considerations:
1.Maximum Current Demand: Calculate the total current drawn by all appliances connected to the circuit.
2.Tripping Sensitivity: Based on safety requirements and potential fault scenarios.

Example: Sum all appliance currents:
Appliance A: 300W (1.3A)
Appliance B: 500W (2.17A)
Total current demand: 3.47A
This means you need an ELCB with a rated current (In) equal to or greater than 3.47A.
Question: How do you measure earth leakage current, and what is the acceptable range for safety standards?: Answer: Measuring earth leakage current requires a specialized instrument called an earth leakage clamp meter. It clamps around the earth conductor of the circuit and measures the current flowing through it. Acceptable levels for safety vary depending on regulations and application:
- IEC 60364-4-42: 30mA maximum for general residential installations.
- BS 7671: 30mA for most domestic circuits, 100mA for specific situations (e.g., bathrooms).

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MISUMI Vietnam Company Limited, Legal Representative: Tomohiro Watanabe,
phone: 0222-361-1555, e-mail: cs@misumi.com.vn, Enterprise Code: 0107514576,
Date of Issuance: 22 July 2016, Place of Issuance: Bac Ninh, Business Certificate No. 6573041568-KD dated 27 September 2016 issued by the People's Committee of Bac Ninh

Công ty TNHH MISUMI Việt Nam, Đại diện theo pháp luật: Tomohiro Watanabe,
Điện thoại: 0222-361-1555, e-mail: cs@misumi.com.vn, Mã số doanh nghiệp: 0107514576,
ngày cấp 22/7/2016, nơi cấp: Bắc Ninh, Giấy phép kinh doanh số: 6573041568-KD ngày cấp 27/9/2016 bởi UBND tỉnh Bắc Ninh

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Earth Leakage Breakers (Low Capacity)（Mounting Method：Fasten With Screws）

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Specification/DimensionsĐặc điểm kỹ thuật / Kích thướcĐặc điểm kỹ thuật / Kích thước

Ampere frame AF

Rated block capacity AC 100 V(kA)

Rated block capacity AC 200 V(kA)

Rated block capacity AC 400 V(kA)

Number of Poles

Rated Operating Voltage(V)

Rated Current(A)

rate sensitivity current(mA)

Mounting Method

Representative Standard

Dimension height(mm)

Dimension width(mm)

Dimension depth(mm)

Rated block capacity, voltages except VAC 100/200/400, VDC 250

Connection Method

Related Categories to Earth Leakage Breakers (Low Capacity)Danh mục liên quan đến Earth Leakage Breakers (Low Capacity)

FAQ Earth Leakage Breakers (Low Capacity)

About MISUMIVề Misumi

About this WebsiteVề trang Web này

Useful ToolsCác công cụ hữu ích

Customer ServiceDịch vụ chăm sóc khách hàng

MISUMI Contact Monday to Saturday: 8:00 am - 5:00 pm Order cut off time is 5:00 pm Thứ 2 đến Thứ 7: 8 giờ sáng đến 5 giờ chiều Hạn chót đặt hàng là 5 giờ chiều