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Earth Leakage Breakers (Low Capacity)

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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    Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV63-CV

    Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV63-CV

    MITSUBISHI

    Size as is, increased blocking performance. (economic item)

    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
    50AF 7.5 7.5 5 3 AC100-440 5 ~ 50 15 ~ 100/200/500 switching DIN rail mount PSE 130 75 90 Available Surface type
    From: 1,258,750 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breaker F Style NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV63-SVF

    Earth Leakage Circuit Breaker F Style NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV63-SVF

    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
    50AF 15 15 10 3 AC100-440 15 ~ 60 30 ~ 500 DIN/Screw retention PSE / CE / TUV 100 54 90 Available Surface type
    From: 2,828,750 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breaker F Style NV-S Class (General-Purpose Product) Harmonic/Surge Compatible Type NV32-SVF

    Earth Leakage Circuit Breaker F Style NV-S Class (General-Purpose Product) Harmonic/Surge Compatible Type NV32-SVF

    MITSUBISHI

    The industry's smallest breaker was born. F Style NV-S class (general-purpose)

    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 7.5 7.5 5 3 AC100-440 10 ~ 30 30 ~ 500 DIN/Screw retention PSE / CE / TUV 100 54 90 Available Surface type
    From: 2,243,750 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV125-CV

    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
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breakers (ELCB) NV630-CW Series

    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
    Days to Ship: Số ngày giao hàng: Quote
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    Earth Leakage Breaker NV-S Class (General-Purpose Product) High Harmonics/ Surges Compatible NV250-SV

    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
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breaker F Style NV-C Class (Economy Product) Harmonic/Surge Compatible Type NV63-CVF

    Earth Leakage Circuit Breaker F Style NV-C Class (Economy Product) Harmonic/Surge Compatible Type NV63-CVF

    MITSUBISHI

    The industry's smallest breaker was born. F Style NV-C Class (economic item)

    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
    50AF 7.5 7.5 5 3 AC100-440 15 ~ 30 30 DIN/Screw retention PSE 100 54 90 - Surface type
    From: 2,848,750 VND
    Days to Ship: Số ngày giao hàng: Quote
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    Earth Leakage Circuit Breaker NV-S Class (Economy Model) Compatible With High Harmonics And Surges NV250-CV

    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
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breakers (ELCB) NV-SW Series

    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
    Days to Ship: Số ngày giao hàng: Quote
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    Earth Leakage Circuit Breakers (ELCB) NV-SEW Series 400AF High Amp

    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
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
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    Earth Leakage Circuit Breaker NV-H Class (High Performance Model) Compatible With High Harmonics And Surges NV63-HV

    Earth Leakage Circuit Breaker NV-H Class (High Performance Model) Compatible With High Harmonics And Surges NV63-HV

    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
    50AF 25 25 10 3 AC100-440 20 ~ 30 30 ~ 100· 200· 500 switch DIN/Screw retention PSE / CE / TUV 130 75 90 Available Surface type
    From: 2,853,750 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
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    Leakage breaker NV-S class (general-purpose product) Harmonic/surge compatible type NV630-SW

    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
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV125-SVF

    Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV125-SVF

    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 50 25 3 AC100-440 100 30 DIN/Screw retention PSE 130 75 90 Available Surface type
    From: 10,940,000 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
  • You can add up to 6 items per a category to the compare list.

    Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series

    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 AC100-440 400 30 ~ 100· 200· 500 switch Fasten With Screws - 257 140 155 Available Surface type
    From: 18,840,000 VND
    Days to Ship: Số ngày giao hàng: Quote
    day to ship Quote
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.

    Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV63-CV

        You can add up to 6 items per a category to the compare list.

        Earth Leakage Circuit Breaker F Style NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV63-SVF

            You can add up to 6 items per a category to the compare list.

            Earth Leakage Circuit Breaker F Style NV-S Class (General-Purpose Product) Harmonic/Surge Compatible Type NV32-SVF

                You can add up to 6 items per a category to the compare list.

                Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV125-CV

                    You can add up to 6 items per a category to the compare list.

                    Earth Leakage Circuit Breakers (ELCB) NV630-CW Series

                        You can add up to 6 items per a category to the compare list.

                        Earth Leakage Breaker NV-S Class (General-Purpose Product) High Harmonics/ Surges Compatible NV250-SV

                            You can add up to 6 items per a category to the compare list.

                            Earth Leakage Circuit Breaker F Style NV-C Class (Economy Product) Harmonic/Surge Compatible Type NV63-CVF

                                You can add up to 6 items per a category to the compare list.

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

                                    You can add up to 6 items per a category to the compare list.

                                    Earth Leakage Circuit Breakers (ELCB) NV-SW Series

                                        You can add up to 6 items per a category to the compare list.

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

                                            You can add up to 6 items per a category to the compare list.

                                            Earth Leakage Circuit Breaker NV-H Class (High Performance Model) Compatible With High Harmonics And Surges NV63-HV

                                                You can add up to 6 items per a category to the compare list.

                                                Leakage breaker NV-S class (general-purpose product) Harmonic/surge compatible type NV630-SW

                                                    You can add up to 6 items per a category to the compare list.

                                                    Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV125-SVF

                                                        You can add up to 6 items per a category to the compare list.

                                                        Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series
                                                          BrandNhãn hiệu

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          MITSUBISHI

                                                          Product SeriesDòng sản phẩm

                                                          Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV63-CV

                                                          Earth Leakage Circuit Breaker F Style NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV63-SVF

                                                          Earth Leakage Circuit Breaker F Style NV-S Class (General-Purpose Product) Harmonic/Surge Compatible Type NV32-SVF

                                                          Earth Leakage Circuit Breaker NV-C Class (Economy Product) Harmonic/Surge Compatible NV125-CV

                                                          Earth Leakage Circuit Breakers (ELCB) NV630-CW Series

                                                          Earth Leakage Breaker NV-S Class (General-Purpose Product) High Harmonics/ Surges Compatible NV250-SV

                                                          Earth Leakage Circuit Breaker F Style NV-C Class (Economy Product) Harmonic/Surge Compatible Type NV63-CVF

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

                                                          Earth Leakage Circuit Breakers (ELCB) NV-SW Series

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

                                                          Earth Leakage Circuit Breaker NV-H Class (High Performance Model) Compatible With High Harmonics And Surges NV63-HV

                                                          Leakage breaker NV-S class (general-purpose product) Harmonic/surge compatible type NV630-SW

                                                          Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges NV125-SVF

                                                          Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series

                                                          From

                                                          1,258,750 VND

                                                          2,828,750 VND

                                                          2,243,750 VND

                                                          2,056,250 VND

                                                          19,737,500 VND

                                                          5,285,000 VND

                                                          2,848,750 VND

                                                          3,390,000 VND

                                                          14,480,000 VND

                                                          34,525,000 VND

                                                          2,853,750 VND

                                                          27,045,000 VND

                                                          10,940,000 VND

                                                          18,840,000 VND

                                                          Days to ShipSố ngày giao hàng Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote
                                                          Ampere frame AF50AF50AF30AF or less100AF to 199AF400AF or higherOther50AFOther400AF or higher400AF or higher50AF400AF or higher100AF to 199AF400AF or higher
                                                          Rated block capacity AC 100 V(kA)7.5157.530-857.536858525855085
                                                          Rated block capacity AC 200 V(kA)7.5157.53050857.536858525855085
                                                          Rated block capacity AC 400 V(kA)5105103636525455010502550
                                                          Number of Poles33333333333333
                                                          Rated Operating Voltage(V)AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440AC100-440
                                                          Rated Current(A)5 ~ 5015 ~ 6010 ~ 3060 ~ 125500125 ~ 25015 ~ 30125 ~ 250250 ~ 40080020 ~ 30500 ~ 600100400
                                                          rate sensitivity current(mA)15 ~ 100/200/500 switching30 ~ 50030 ~ 50030 ~ 100· 200· 500 switch100· 200· 500 switch30 ~ 100· 200· 500 switch303030 ~ 100· 200· 500 switch100· 200· 500 switch30 ~ 100· 200· 500 switch100· 200· 500 switch3030 ~ 100· 200· 500 switch
                                                          Mounting MethodDIN rail mountDIN/Screw retentionDIN/Screw retentionFasten With ScrewsFasten With ScrewsFasten With ScrewsDIN/Screw retentionFasten With ScrewsFasten With ScrewsFasten With ScrewsDIN/Screw retentionFasten With ScrewsDIN/Screw retentionFasten With Screws
                                                          Representative StandardPSEPSE / CE / TUVPSE / CE / TUVPSECE-PSE--CEPSE / CE / TUVCEPSE-
                                                          Dimension height(mm)130100100130257165100165257275130257130257
                                                          Dimension width(mm)75545490140105541051402107514075140
                                                          Dimension depth(mm)909090901559290921551559015590155
                                                          Rated block capacity, voltages except VAC 100/200/400, VDC 250AvailableAvailableAvailableAvailableAvailableAvailable-AvailableAvailableAvailableAvailableAvailableAvailableAvailable
                                                          Connection MethodSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface type

                                                          Loading...Tải…

                                                          1. 1

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

                                                          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).