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

MITSUBISHI offers products Earth Leakage Breakers (Low Capacity) specified by Mounting Method Fasten With Screws from Electrical & Controls product category. There are a total of 14 items. Parts and equipment for controlling machines and electrical systems. Controllers and power supplies. MITSUBISHI products are available to order through MISUMI online 24/7. Free shipping, no minimum order.
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    Earth Leakage Circuit Breaker NV-S Class (General Purpose Model) Compatible With High Harmonics And Surges

    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
    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-L Series

    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
    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
    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 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 Breakers (ELCB) NV-SVU Series

    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
    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 (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-HVU Series

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

    UL 489 Listed No-Fuse Circuit Breaker With Earth Leakage Protection (Compatible with High Harmonics And Surges) NV250-CVFU

    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
    Days to Ship: Số ngày giao hàng: Quote
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  • 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 ~ AC200-440 400 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
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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
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    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
    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 Breakers (ELCB) NV-NCV Series NV125-NCV

    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
    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-S Class (General Purpose Model) Compatible With High Harmonics And Surges

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

        Earth Leakage Circuit Breakers (ELCB) NV-L Series

            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 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 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 Breakers (ELCB) NV-SVU Series

                            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-HVU Series

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

                                    UL 489 Listed No-Fuse Circuit Breaker With Earth Leakage Protection (Compatible with High Harmonics And Surges) NV250-CVFU

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

                                        Earth Leakage Circuit Breakers (ELCB) NV400-SEW 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 Breakers (ELCB) NV630-CW Series

                                                    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 Breakers (ELCB) NV-NCV Series NV125-NCV
                                                          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-S Class (General Purpose Model) Compatible With High Harmonics And Surges

                                                          Earth Leakage Circuit Breakers (ELCB) NV-L Series

                                                          Earth Leakage Circuit Breakers (ELCB) NV-SW Series

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

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

                                                          Earth Leakage Circuit Breakers (ELCB) NV-SVU Series

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

                                                          Earth Leakage Circuit Breakers (ELCB) NV-HVU Series

                                                          UL 489 Listed No-Fuse Circuit Breaker With Earth Leakage Protection (Compatible with High Harmonics And Surges) NV250-CVFU

                                                          Earth Leakage Circuit Breakers (ELCB) NV400-SEW Series

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

                                                          Earth Leakage Circuit Breakers (ELCB) NV630-CW Series

                                                          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-

                                                          14,480,000 VND

                                                          2,056,250 VND

                                                          5,285,000 VND

                                                          14,880,000 VND

                                                          3,390,000 VND

                                                          18,595,000 VND

                                                          25,412,500 VND

                                                          18,840,000 VND-

                                                          34,525,000 VND

                                                          19,737,500 VND

                                                          27,045,000 VND

                                                          5,517,500 VND

                                                          Days to ShipSố ngày giao hàng Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote Quote
                                                          Ampere frame AF-30AF or less400AF or higher100AF to 199AFOther100AF to 199AFOther100AF to 199AFOther400AF or higher400AF or higher400AF or higher400AF or higher100AF to 199AF
                                                          Rated block capacity AC 100 V(kA)501.58530855036100658585-85-
                                                          Rated block capacity AC 200 V(kA)501.5853085-36--85855085-
                                                          Rated block capacity AC 400 V(kA)30-4510363025503650503650-
                                                          Number of Poles32333333333333
                                                          Rated Operating Voltage(V)AC100 to 440AC100 ~ AC100-200AC100-440AC100-440AC100-440AC120-480AC100-440AC120-480AC120-480AC100-440 ~ AC200-440AC100-440AC100-440AC100-440AC100/200
                                                          Rated Current(A)15 ~ 5015 ~ 30250 ~ 40060 ~ 125125 ~ 25060 ~ 100125 ~ 25060 ~ 100200 ~ 250400800500500 ~ 60075
                                                          rate sensitivity current(mA)50010 ~ 3030 ~ 100· 200· 500 switch30 ~ 100· 200· 500 switch30 ~ 100· 200· 500 switch30 ~ 100· 200· 500 switch3030 ~ 100· 200· 500 switch100· 200· 500 switch30 ~ 100· 200· 500 switch100· 200· 500 switch100· 200· 500 switch100· 200· 500 switch100· 200· 500 switch
                                                          Mounting MethodFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With ScrewsFasten With Screws
                                                          Representative StandardPSEPSE / CE / TUV-PSE-PSE / CE / TUV / CCC-PSE / CE / TUV / CCCCE / TUV / CCC-CECECEPSE
                                                          Dimension height(mm)13070257130165160165160185257275257257130
                                                          Dimension width(mm)903214090105901059010514021014014090
                                                          Dimension depth(mm)9046.515590929092909215515515515590
                                                          Rated block capacity, voltages except VAC 100/200/400, VDC 250AvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailableAvailable-
                                                          Connection MethodSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface typeSurface type

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                                                          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).