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Telescope voltage testers for trolley buses

 1.830,00 1.980,00

(VAT only for EU) plus shipping

The MultiSafe TT-OB is a telescopic voltage tester for fast voltage testing on trolley buses.

The simple operation and the variable telescope system allow for quick and safe testing of the driving voltage.
The TT-OB is the ideal test equipment for on-call duty and fire brigades. In emergencies, the voltage can be checked quickly and without any additional aids.

Voltage tester:

  • precise display of the voltage 50 V up to 1 000 V
  • large two-color illuminated display (red / white), for a clear warning of dangerous voltages
  • clear LED indicator for dangerous voltage
  • red / green 360 ° LED display, warning in all directions
  • acoustic warning of dangerous voltage


  • integrated self-test for quick checking of the protective resistors, connecting cable, display and electronics
  • surge voltage strength >100 kV
  • highest safety through molded protective resistors

More functions:

  • telescope system for easy and quick testing
  • variable test height ca. up to 6,20 meter
  • for indoor and outdoor use
  • various types for testing on overhead lines with 700  catenary distance*
  • easy operation with just one button
  • robust housing
  • IP 65 – waterproof

* other overheadline distances on request

Technical data TT-O Bus

TT S-OB700TT M-OB700
Nominal voltage50 - 1 000 V AC
50 - 1 500 V DC
Dispaly range50 - 1 000 V AC
50 - 1 500 V DC
Frequency DC / 15 - 500 Hz
Test height ca. up to6,2 m
Transport length1,35 m1,65 m
Telescope system6 part4 part
Frequency indicationyes
Catenary distance700 mm
(other overheadline distances on request)
exchangeable catenary distanceyes, through
accessory modules
Indicator groupI (optical)
III (acoustic)
LED indication red / greenyes
Two-color LCDyes
Integrated self-testyes
Power supply 6 x 1,5 V AA
Surge voltage strength100 kV
For indoor installationsyes
For outdoor installationsyes
For use in humid environments
(at rainfall)
Protection categoryIP 65
Dimensions and weight
1350 x 120 x 110 mm

3500 g
1650 x 120 x 110 mm

4000 g
Packed Product
Dimensions and weight
1410 x 200 x 190 mm

1710 x 200 x 190 mm

5500 g