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Megger LTW315 Earth Loop Tester

The entry-level tester in Megger's earth loop tester range, the LTW315 is used for carrying out 2 wire loop impedance measurements on phase to earth or phase to neutral. Guaranteed not to trip working RCDs of more than 30mA thanks to a non-trip loop test and compatible with both three and single phase systems, this tester makes performing measurements easier by requiring the use of only 2 test leads in order to carry out measurement procedures. When there is no risk of tripping an RCD it is also possible to use high current loop testing mode. When carrying out no-trip testing procedures the LTW315 constantly evaluates the level of noise detected on circuitry to ensure that the accuracy of results is not modified by the presence of electrical noise. The Megger LTW315 is part of the LTW range of earth loop testers. The following table outlines the difference between each of the available models in this series. - 2-wire loop testing procedures on phase to earth and phase to neutral - Guaranteed to not trip out RCDs thanks to non-trip loop testing - Noise detection filters out electrical noise that can create erratic readings - Resolution down to 0.01 - Portable lightweight instrument with tough carrying case encasing the tester - AUTO start function starts testing as soon as the leads are connected - PFC display up to 20kA

GBP 759.99

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Megger MFT1741 Multifunction Tester, 100 V, 250 V, 500 V, 1000 V, Earth Resistance Measurement With Bluetooth

Megger MFT1741 Multifunction Tester, 100 V, 250 V, 500 V, 1000 V, Earth Resistance Measurement With Bluetooth, Loop Impedance Test Type: 2 Wire (Hi Current), 2 Wire (Non-Trip Range), 3 Wire (Non-Trip Range), Automatic RCD Test: Yes, Maximum Voltage Measurement: 600V, Test Type: Auto Test, Continuity, Earth Resistance, Insulation, Loop Test, RCD Ramp Test, RCD Test, Resistance, Continuity Test Current: 15 mA, 200 mA, RCD Test Type: A, AC, B, DC, S, Test Standards: EN 61010, IEC 61326, Battery Type: AA, NiMH, Dimensions: 390 x 220 x 285mm, MPN: 1009-986

GBP 1515.00

3

Megger LTW325 Earth Loop Tester

The mid-range model in Megger's LTW300 range of earth loop testers, the LTW325 builds upon the functionality of the LTW315 and adds such functionality as the ability to display Max Zs and R1 + R2. Capable of full 2 wire loop testing designed not to trip 30ma RCDs and suitable for use with a wide range of voltages, the Megger LTW325 can be used to quickly and easily verify the loop impedance of electrical circuits without directly disconnecting the electrical supply. Loop testing is performed using only 2 leads and can be connected as phase to earth, phase to neutral or phase to phase. An integrated no-trip loop test ensures that the Megger LTW325 will not trip any RCD 30mA while a separate high current loop test can be used should there not be an RCD fitted to the system. To ensure accuracy when testing this earth loop tester also includes an integrated electrical noise detection filter that will detect and filter out the effects of heavy electrical noise which can have a negative effect on training results. - 2-wire non trip loop testing - 2 wire fast testing (high current) - Suitable for use on 110V to 280V applications - Also suitable for use on 50V to 440V applications - Phase to phase testing - 20 KA PFC range - 0.01 resolution - Automatic noise detection and correction - Auto loop test initiation - Voltage and frequency measurements - Max Zs display - R1 + R2 display

GBP 849.99

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Megger LTW325-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC

Megger LTW325-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC, RCD Test Type: AC Selective, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Dimensions: 203 x 148 x 78mm, Weight: 1kg, Length: 203mm

GBP 535.00

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Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,, Calibrated: UKAS, Best Loop Test Accuracy: ±10%, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Type: AA, Battery Life: 2000 Tests, Dimensions: 203 x 148 x 78mm, Weight: 1kg, Length: 203mm, Maximum Operating Temperature: +50°C

GBP 565.00

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Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,, Calibrated: RSCAL, Best Loop Test Accuracy: ±10%, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Type: AA, Battery Life: 2000 Tests, Dimensions: 203 x 148 x 78mm, Weight: 1kg, Length: 203mm, Maximum Operating Temperature: +50°C

GBP 544.50

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Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,, Calibrated: UKAS, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Dimensions: 203 x 148 x 78mm, Weight: 1kg, MPN: LTW425-RS-BS

GBP 665.00

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Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,, Calibrated: RSCAL, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Dimensions: 203 x 148 x 78mm, Weight: 1kg, MPN: LTW425-RS-BS

GBP 644.50

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Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,, Calibrated: RSCAL, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Dimensions: 203 x 148 x 78mm, Weight: 1kg, MPN: LTW325-RS-BS

GBP 584.50

1

Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,, Calibrated: UKAS, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Dimensions: 203 x 148 x 78mm, Weight: 1kg, MPN: LTW325-RS-BS

GBP 605.00

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Megger MFT1711 Single Phase Multi-function Tester

Expressly for testing low voltage electrical installations to BS7671. They provide all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations.MFT1711 17th Edition Multifunction Tester. This entry level 17th Edition tester offering CAT IV, 3 and 2-wire non trip loop testing with resistance and fault current display,frequency measurement and the largest, brightest and clearest display on the market. This now adds a 1 kV insulation test range, Auto RCD tests, 10 mA RCD, programmable (VAR) RCD, ZMAX and true RMS voltage measurement. Two and three wire non trip loop testing for fast repeatable results. Large bright LCD display showing dual parameters - loop resistance and fault current, insulation resistance and test voltage. Phase rotation indication for verification of rotating machinery. 3-phase RCD testing for industrial applications with no earth. Suite of earths test for electrode resistance measurement. On-board data storage and Bluetooth download.

GBP 1129.99

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Megger LTW425-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC

Megger LTW425-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC, Test Equipment Type: Combined Loop & RCD Tester, RCD Test Type: AC Selective, Best Loop Test Accuracy: ±10%, RCD Test Current: 4A, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Life: 2000 Tests, Battery Type: AA, Weight: 1000g, Height: 78mm, Length: 203mm

GBP 595.00

1

Megger LTW315-EU-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger LTW315-EU-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,, Best Loop Test Accuracy: ±10%, Non-Trip Loop Test: Yes, Safety Category: CAT IV 300 V, IEC 61010, Display Type: LCD, Battery Type: AA, Battery Life: 2000 Tests, Dimensions: 203 x 148 x 78mm, Weight: 1kg, Length: 203mm, Maximum Operating Temperature: +50°C, Minimum Operating Temperature: -10°C

GBP 495.00

1

Megger MTB7671/2 Instrument Test Box

The Megger MTB7671/2 Instrument Test Box is a multifunctional calibration device designed to verify the performance of electrical installation testers between formal calibrations. Housed in a robust carry case, it enables on-site checks of insulation resistance, continuity, loop impedance, RCD operation, and voltage measurement functions. This portable checkbox supports compliance with standards such as BS7671, BS EN 61557, and IET On-Site Guide recommendations. Colour-coded test points and clear pass/fail indicators simplify use, while included result cards and test labels help maintain a documented record of performance checks. Features and Benefits Verifies key tester functions: insulation resistance, continuity, loop impedance, RCD operation, and voltage measurement Provides insulation resistance test voltages at 250V, 500V, and 1000V, with resistance values at 9M and 90M to verify measurement accuracy Offers continuity testing with resistance values at 0.5 and 5, ensuring correct voltage (4-24V) and current (>200mA) levels Simulates RCD tests at 10mA, 30mA, and 100mA, allowing five standard tests for each current value Facilitates loop impedance testing for both trip and no-trip methods without tripping RCD-protected circuits Supports traceability and best practices in line with IET guidelines Notes Supplied in a hard protective transport case Includes record cards and adhesive test labels for equipment logging

GBP 699.99

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5x Megger MFT1741 Multi-function Tester with Loop Test & Confidence Meter

The MFT1741 multifunction tester is an instrument designed for testing low voltage electrical installations and especially in locations that suffer from high electrical noise. It provides all the tests required to complete the necessary electrical certification for industrial, commercial and domestic fixed wiring installations. Enhanced non-trip loop impedance measurement technology. "Confidence meter" measurement analysis (patent pending). Full single and 3 phase compliant installation testing. 10 mA to 1 A single and 3 phase RCD testing. Earth testing and stake-less testing for electrode resistance measurement. Simple colour-coded test selection. Automatic start - no need to press TEST so leaving both hands free to hold probes. Internal memory and Bluetooth communications. EN61010 CAT IV safety rating and tough IP54 case.

GBP 9499.95

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Megger MFT1721 3 Phase Multi-function Installation Tester

The MFT1721 3 Phase Multifunction Installation Tester is an advanced, reliable tool for testing low voltage electrical installations to BS7671 standards. Designed for industrial, commercial, and domestic applications, it ensures compliance with safety regulations while delivering accurate results. With features like phase rotation, 3-phase RCD testing, and on-board data storage with Bluetooth download, it offers efficiency and versatility. The large, bright dual-parameter LCD display and robust design make it an essential tool for electrical professionals. Features and Benefits Performs two and three-wire non-trip loop testing for fast and consistent results Dual-parameter LCD display for clear and simultaneous readings Phase rotation indication to verify rotating machinery setups Supports 3-phase RCD testing for industrial installations without earth Comprehensive earth electrode resistance measurement suite Includes Bluetooth connectivity for seamless data download and reporting Suitable for testing fixed wiring installations across industrial, commercial, and domestic environments

GBP 1399.99

1

Megger LTW425 Earth Loop Tester

Megger's LTW425 is the best model available in Megger's LTW range of earth loop testers. It includes all of the features found on the other models and also enhances the overall resolution of the instrument, bumping it up from 0.001 to 0.0001 resolution. It's also the only model in the series to feature 40 KA PFC range. Like other models in the series this earth loop tester is capable of performing 2, 3 and 4 wire earth loop measurements. It also performs 2-wire fast testing (high current) which can be used when an RCD isn't present in the installation. The LTW425 also automatically compensantes for excess noise present within the installation, ensuring that the accuracy of loop tests performed remains high. The instrument is fully suitable for use on 110 to 280V and 50 to 440V applications, can carry out phase to phase testing, automatically starts loop tests when test leads are connected and can also be used to get accurate measurements of both frequency and voltage. It also displays Max Zs and R1 + R2. - 2-wire non trip loop testing - 2 wire fast testing (high current) - Suitable for use on 110V to 280V applications - Also suitable for use on 50V to 440V applications - Phase to phase testing - 20 KA PFC range - 0.01 resolution - Automatic noise detection and correction - Auto loop test initiation - Voltage and frequency measurements - Max Zs display - R1 + R2 display

GBP 919.99

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Merchant

Price (EUR)

Megger LTW315 Earth Loop Tester

Megger MFT1741 Multifunction Tester, 100 V, 250 V, 500 V, 1000 V, Earth Resistance Measurement With Bluetooth

Megger LTW325 Earth Loop Tester

Megger LTW325-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC

Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger LTW315-RS-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW425 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger LTW325 Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC Selective,

Megger MFT1711 Single Phase Multi-function Tester

Megger LTW425-EU-BS Loop Impedance & RCD Combined Tester, Loop Impedance Test Type 2 Wire 440V, RCD Test Type AC

Megger LTW315-EU-BS Loop Impendance Tester, Loop Impedance Test Type 2 Wire, 3 Wire 440V, RCD Test Type AC Selective,

Megger MTB7671/2 Instrument Test Box

5x Megger MFT1741 Multi-function Tester with Loop Test & Confidence Meter

Megger MFT1721 3 Phase Multi-function Installation Tester

Megger LTW425 Earth Loop Tester

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