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Description
MAJ MT355Digital Loop Impedance & PSC PFC Tester 0~500VDC , Loop Imp L PE 0. 20~9999 (Hi Amp & No Trip) , Freq: 45Hz~65Hz , LCD Display , RE (Loop Method) 0. 20~9999 , PSC PFC Range 0~2kA , Bluetooth 4. 0 , 50V~500VAC , L N Line Res 0. 20~9999 , 200x95x50mm Digital Loop Impedance & PSC PFC Tester Overview The MT355 is a simple to use Earth Loop Impedance tester designed to make the accurate measurements of Earth Loop Impedance and Neutral Loop Impedance (Phase
Digital Loop Impedance & PSC/ PFC Tester 0~500VDC , Loop Imp L-PE 0.20Ω~9999Ω (Hi Amp & No-Trip) , Freq:45Hz~65Hz , LCD Display , RE (Loop Method) 0.20Ω~9999Ω , PSC/PFC Range 0~2kA , Bluetooth 4.0 , 50V~500VAC , L-N Line Res 0.20Ω~9999Ω , 200x95x50mm
Digital Loop Impedance & PSC/ PFC Tester
Overview
The MT355 is a simple to use Earth Loop Impedance tester designed to make the accurate measurements of Earth Loop Impedance and Neutral Loop Impedance (Phase Neutral Impedance) quick and easy. The MT355 performs two types of tests, the first being No-Trip technology to avoid tripping of RCD’s (ELCB’s) whilst performing the Loop Impedance Tests. The second test is the “TRIP” test, where high current <15A is used for the Loop Impedance test where the RCD (ELCB) must be bypassed. This is by far the largest, fastest and most accurate test available. The MT355 will automatically display the wiring status as well as test results for both Loop Impedance and Prospective Short Circuit current (PSC)/ Prospective Fault Current (PFC) for both NO-TRIP and TRIP tests. Earth Resistance is only activated in the L-PE “NO-TRIP” mode, and uses the Loop method to measure the RE. The instrument can automatically differentiate between AC and DC voltages up to 500V, if AC voltage is detected, the display indicates the AC voltage and mains frequency. The MT355 has a Phase Rotation Test, where the display indicates “123” for correct phase sequence and “321” for reversed phase sequence. With the Bluetooth function, users can transmit data to the Android or iOS mobile App for viewing, organising, and sharing recordings. The meter has a double moulded rubber case designed for heavy duty use.
Features
- Two types of Earth Loop Impedance tests including Non-Trip & Trip Hi-Amp
- Automatically display the wiring status as well as test results
- Smart wiring indicators that visual alerts for reversed wiring and socket wiring status
- Simultaneous display of loop impedance, PSC/PFC and RE
- Automatic AC/DC Voltage Detection up to 500V
- Phase rotation test ensures correct phase sequence in three-phase systems
- Auto lock-out feature prevents damage from overheating
- Bluetooth allows for seamless data transfer and monitoring
- Double moulded rubber housing for protection in harsh environments
Specifications
| Function | Range |
| Loop Impedance L-PE (Hi Amp & No-Trip) | 0.20Ω – 9999Ω |
| RE (Loop Method) | 0.20Ω – 9999Ω |
| L-N Resistance | 0.20Ω – 9999Ω |
| PSC/PFC Range | 0 – 2kA |
| AC Voltage | 50V – 500V |
| DC Voltage | 1V – 500V |
| Frequency | 45Hz – 65Hz |
| Bluetooth | 4.0 |
| Display | LCD Display |
| Batteries | 6 x AA |
| Dimensions | 200 x 95 x 50mm |
| Weight | 700g |
Downloads
Additional Information
| Device | Tester |
| Type | 0~500VDC |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 598 reviews
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Product Reviews
★★★★★ 4
Great, but bring your own inserts.
Size: 24x7.9, Color: Black
These work great, easy to install. Happy with them. Only problem was the instructions say don’t use the include inserts on wallboard, which meant I had to go out and purchase my own. That’s OK, because I like to use inserts I trust.
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Reviewed in the United States on December 9, 2025
★★★★★ 5
Sturdy and attractive
Size: 15x6.8, Color: Black, Size: 15x6.8, Color: Black
Love the shelves, great quality and design. They are very sturdy and perfect for my need. I ordered wine glass holders from Amazon and attached them to the shelves. Impressed and amazed at the look.
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Reviewed in the United States on November 18, 2025
★★★★★ 5
Beautiful shelves.
Size: 24x7.9, Color: White
Beautiful shelves. Easy to put up once you get the holes level.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
good
Size: 23.6 Inch, Color: White
I recently added this bathroom shelf, and it’s been a great upgrade for organizing my space. It was easy to install and feels sturdy enough to hold everyday essentials like toiletries, skincare products, and small containers without any issues.
The design is simple and clean, which helps it blend in nicely with the rest of the bathroom. It doesn’t take up much space but still provides enough storage to reduce clutter around the sink or shower area.
One thing I appreciate is how practical it is for small bathrooms—everything is within reach, and it makes the space feel more organized overall. As long as it’s installed properly, it holds up well and stays secure.
The only downside is that heavier items might not be ideal depending on the material, but for regular use, it does the job perfectly.
Overall, a functional and affordable solution if you’re looking to add extra storage and keep your bathroom tidy.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Perfect!!
Size: 23.6 Inch, Color: Rustic Brown, Size: 23.6 Inch, Color: Rustic Brown
Easy to hang and stunning!
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Reviewed in the United States on April 30, 2026