Drummond MTL20B Test Lamp with Blue Indication

  • Four voltage levels
  • Blue LED for 400v indication
  • 360-degree viewing
  • GS38 and CAT IV 600v Safety rating
  • Straight and Right Angled Probes

EAN: 5036160186196 SKU: DRUMTL20B Category: Tag:


The Drummond MTL20/B is fully GS38 and CAT IV 600v compliant and differs from the standard MTL20 in just one way. The super bright LED voltage level indicators will indicate 50,100 and 200 voltage presence in RED LED’s whilst the 400-volt indication is a bright BLUE lamp.

This enables the user to distinctively identify high voltage via the 360-degree illumination cluster, as required by some DNO’s.

The MTL20/B comes with both straight and right-angled probes to allow good purchase in some applications and avoiding the risk of a probe slipping in the wrong or dangerous direction.

Where transient, capacitive or phantom voltages, often found in the concentric cables supplying the network, are present the MTL20/B allows the user to discharge these voltages via the large RED buttons located on each probe.

Depressing both buttons simultaneously in the presence of such voltages will discharge the voltage using the inbuilt loading of the circuit by the tester. This is confirmed by the extinguishing of all LED’s.



Maximum working voltage 500VAC, 750DC
Voltage ranges 50, 120, 230, 400V AC/DC
Range detection automatically
Response time <0.1s
Frequency range DC, 40-65Hz
Test current <3.5mA, with switches depressed 28mA @ 240VAC, 60mA @ 500VAC
Temperature range -10°C – +55°C
Humidity max. 85% R.H.
Measurement CAT CAT IV 600V
IP rating IP64
Weight 0.35kg
Dimensions 213 x 112 x 72mm
Complies with BS EN 61243-3:2010


CAT IV 600 V

Class II double insulation



Self Powered
AC/DC Voltage Indication
360 Degree Viewing
50/100/200/400V Thresholds
50/230/400/690V Thresholds
Low Impedance Function
Lockable Probes363
Safety ratingCAT IV 600VCAT IV 1000VCAT IV 600V