Proving Units

A proving unit is a portable device that’s designed to be used as a two-pole tester, to verify the safe operation of voltage testers such as Multimeters and clamp meters and the accuracy is maintained. As we strongly advise to calibrate such products, when used in combination with a proving unit peace of mind will be made to ensure accuracy is maintained between calibration intervals. Proving units can test voltages from AC and DC instruments, whilst reducing the risk of a shock or arc flash by validating the testing equipment.

What are the different types of Proving Unit?

As we know the proving units are portable making them easy to transport and use in many environments, however, there are many varieties of proving units to accommodate the vast voltage ranges of electrical equipment. For example, low voltage proving units such as the Martindale PD240 can test voltages up to 240V, great for residential appliances. If you need something capable of testing high voltage testers, then the Martindale PD690 kit is a great option by testing voltages from 12V to 700V and with a proving unit accompanied by a voltage tester in a neat carry pouch.

Proving unit can supply a range of voltages to the two-pole voltage testers to ensure a thorough test at the applied voltages. An LED light is the sign that the two-pole voltage tester is functioning correctly, allowing you to proceed with your job. Like most devices in a toolbox or bag they can be susceptible to dust, water and general knocks, that’s why it’s important to maintain a testing schedule of your voltage testers. As these aspects can affect the accuracy of voltage testers and if inaccuracies aren’t noticed then this is when safety is in doubt. RS Components offers an in-house calibration service (RSCAL) prior to delivery, but also offers a yearly service for these products.

Why Choose RS Components for a Proving Unit?

Whether you’re an electrician or another professional, then RS Components has a comprehensive range of Proving Units and Proving Unit Kits to choose from leading brands such as Martindale, Fluke, Black Star and Megger. On hand advice from our technical experts to aid your decisions and our inhouse calibration service. See more about our calibration services here.


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Omschrijving Prijs Test Current Rating Output Voltage Display Type Battery Type Calibrated Power Source Dimensions Weight Height Length Maximum Operating Temperature Minimum Operating Temperature Model Number p Plug Type
RS-stocknr. 180-9209
FabrikantnummerMTL15PD
FabrikantJohn Drummond
€ 222,00
Each
Aantal stuks
3.5mA 700V ac LCD AA - Battery 84 x 143 x 50mm 400g 50mm 84mm +40°C -10°C - -
RS-stocknr. 146-2609
FabrikantnummerPRV240FS
FabrikantFluke
€ 210,00
Each
Aantal stuks
- - LED AA RSCAL Battery 7.4 x 2.8 x 11.7mm 230g 11.7mm 7.4mm +50°C -10°C PRV240FS -
RS-stocknr. 706-8713
FabrikantnummerMTL20/PD
FabrikantJohn Drummond
€ 252,00
Each
Aantal stuks
28mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - RSCAL Mains 213 x 112 x 72mm 350g 72mm 213mm +55°C -10°C - -
RS-stocknr. 193-5336
FabrikantnummerMARPD690S
FabrikantMartindale
€ 110,00
Each
Aantal stuks
200mA 690V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690S -
RS-stocknr. 188-2931
FabrikantnummerTB118KIT1
FabrikantMartindale
€ 351,00
Each
Aantal stuks
3.5mA 600V ac/dc - AA - Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 913-7031
FabrikantnummerPD240
FabrikantMartindale
€ 123,00
Each
Aantal stuks
2mA 240V dc - 9V RSCAL Battery 144 x 63 x 31mm 180g 31mm 144mm +40°C -10°C PD240 -
RS-stocknr. 193-5356
FabrikantnummerMARPD440SX
FabrikantMartindale
€ 176,00
Each
Aantal stuks
200mA 440V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440SX -
RS-stocknr. 914-4714
FabrikantnummerPD240
FabrikantMartindale
€ 77,00
Each
Aantal stuks
2mA 240V dc - 9V - Battery 144 x 63 x 31mm 180g 31mm 144mm +40°C -10°C PD240 -
RS-stocknr. 704-8721
FabrikantnummerVIP150 / SP200
FabrikantSocket & See
€ 214,18
Each
Aantal stuks
3.5mA 50 → 690V LED AA RSCAL Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C - -
RS-stocknr. 716-1086
FabrikantnummerRSPD690
FabrikantMartindale
€ 158,00
Each
Aantal stuks
- 700V - AA RSCAL Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD690 -
RS-stocknr. 865-4756
FabrikantnummerRSVIPD150
FabrikantMartindale
€ 222,00
Each
Aantal stuks
3.5mA 700V LED AA - Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 144-5455
FabrikantnummerRSVIPDLOKPRO150
FabrikantMartindale
€ 394,87
Each
Aantal stuks
- 690V LED - - Mains - - - - - - - UK GS38
RS-stocknr. 193-5357
FabrikantnummerMARPD690S
FabrikantMartindale
€ 158,00
Each
Aantal stuks
200mA 690V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690S -
RS-stocknr. 895-9433
FabrikantnummerRSVT25/PD
FabrikantMartindale
€ 347,40
Each
Aantal stuks
3.5mA 700V - AAA UKAS Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS-stocknr. 897-7131
FabrikantnummerRSVT25/PD
FabrikantMartindale
€ 185,00
Each
Aantal stuks
3.5mA 700V - AAA - Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS-stocknr. 375-5337
FabrikantnummerP240
FabrikantBlack Star
€ 126,00
Each
Aantal stuks
2mA 240V - - RSCAL Battery - - - - - - 59180-8020 -
RS-stocknr. 188-2941
FabrikantnummerTB118KIT1
FabrikantMartindale
€ 476,00
Each
Aantal stuks
3.5mA 600V ac/dc - AA RSCAL Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS-stocknr. 193-5335
FabrikantnummerMARPD440SX
FabrikantMartindale
€ 128,00
Each
Aantal stuks
200mA 440V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440SX -
RS-stocknr. 193-5355
FabrikantnummerMARPD440S
FabrikantMartindale
€ 154,00
Each
Aantal stuks
200mA 440V ac LED AA RSCAL Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440S -
RS-stocknr. 192-5869
FabrikantnummerRSVIPDLOK150
FabrikantMartindale
€ 377,96
Each
Aantal stuks
3.5mA - LED AA RSCAL Battery, Mains - - - - +55°C -10°C - -