The MX 531 tester is a compact device that can be used with one hand and, thanks to the strap, worn comfortably on the wrist.
The rotating head ensures maximum ease of use regardless of the position of the 2P+T socket to be controlled, while the backlit display makes reading easier.
The measurement result is displayed for 10 seconds.

The backlight has a second function and changes color to visually indicate that:
‐ the device is connected to the socket (blue)
‐ the measurement is not compliant (red),
‐ all results are compliant and the MX 531 device is disconnected (gray).

Check the correct functioning of the electrical sockets with the TT system.
Measures voltage and displays the connection of conductors on single-phase 2P+E sockets.
Automatically measures earth resistance RE.
Test the intervention of the differential switch at 30 mA.
Depending on the result, the tester also displays different pictograms to provide further confirmation of compliance.
Autonomous and without battery, it recharges directly from the mains socket.
MX 531 was expressly designed to simplify the daily activity of electricians, installers and maintenance technicians.
The strap and carrying case are included in the delivery.

Technical features:
RE measurement: 3 ohms to 1,999 ohms
Auto Range: 3 to 199.9 ohms and 180 ohms to 1,999 ohms
Resolution: 0.1/1ohm
Accuracy: +-(3%L+5D)
Earth fault RE error: red screen
Protection / Overload Allowable 300V CAT III
Voltage from 100 to 400V
Phase/neutral voltage 100 to 420 V - 50/60Hz - L/N inversion indication - fault if 253 V
1V resolution
Accuracy +-(2%+1D)
Phase/earth voltage: 195 V to 253 V - 50/60 Hz
Position indication: phase/neutral and earth
RCD 30mAAC: test if RE correct
Nominal value: 30mA and duration
TESTER FOR TT NEUTRAL SYSTEMS WITH LIVE 2P+T SOCKET
 

Readout: 2.000 counts