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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Viewing 1 - 20 of 26 products
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Description Price 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 stock no. 914-4714
Mfr. Part No.PD240
BrandMartindale
R 1,440.22
Each
units
2mA 240V dc - 9V - Battery 144 x 63 x 31mm 180g 31mm 144mm +40°C -10°C PD240 -
RS stock no. 881-2775
Mfr. Part No.PRV240
BrandFluke
R 3,590.00
Each
units
- - - AA - Battery 117 x 74 x 28mm 200g 28mm 117mm +50°C -10°C PRV240 -
RS stock no. 706-8589
Mfr. Part No.MTL20/PD
R 3,899.02
Each
units
28mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - - Mains 213 x 112 x 72mm 350g 72mm 213mm +55°C -10°C - -
RS stock no. 782-4437
Mfr. Part No.RSVIDP138
BrandMartindale
R 3,602.49
Each
units
3.5mA 440V LED AA - Mains 205 x 67 x 27mm 130g 27mm 205mm +55°C -10°C - -
RS stock no. 865-4759
Mfr. Part No.RSVIPDLOK150
BrandMartindale
R 5,825.54
Each
units
3.5mA - LED AA - Battery, Mains - - - - +55°C -10°C - -
RS stock no. 242-4111
Mfr. Part No.P240
BrandBlack Star
R 1,296.30
Each
units
2mA 240V - - - Battery - - - - - - 59180-8020 -
RS stock no. 193-5334
Mfr. Part No.MARPD440S
BrandMartindale
R 2,004.52
Each
units
200mA 440V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440S -
RS stock no. 180-9209
Mfr. Part No.MTL15PD
R 4,747.11
Each
units
3.5mA 700V ac LCD AA - Battery 84 x 143 x 50mm 400g 50mm 84mm +40°C -10°C - -
RS stock no. 704-7756
Mfr. Part No.VIP100 / SP200
R 2,430.72
Each
units
3.5mA 50 → 690V LED AA - Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C - -
RS stock no. 704-7750
Mfr. Part No.VIP150 / SP200
R 2,793.82
Each
units
3.5mA 50 → 690V LED AA - Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C - -
RS stock no. 193-5335
Mfr. Part No.MARPD440SX
BrandMartindale
R 2,411.13
Each
units
200mA 440V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD440SX -
RS stock no. 146-2603
Mfr. Part No.PRV240FS
BrandFluke
R 3,490.00
Each
units
- - LED AA - Battery 7.4 x 2.8 x 11.7mm 230g 11.7mm 7.4mm +50°C -10°C PRV240FS -
RS stock no. 897-7135
Mfr. Part No.RSVT28/PD
BrandMartindale
R 3,992.17
Each
units
3.5mA 700V LCD AAA - Battery 143 x 84 x 50 (Proving Unit) mm, 205 x 67 x 27 (Indicator) mm - 50mm 143mm +40°C -10°C - -
RS stock no. 704-7740
Mfr. Part No.SP 200
R 1,864.38
Each
units
36mA 50 → 690V - AA - Battery 130 x 65 x 49mm 350g 49mm 130mm +40°C -10°C SP-200 -
RS stock no. 193-5337
Mfr. Part No.MARPD690SX
BrandMartindale
R 2,492.45
Each
units
200mA 690V ac LED AA - Battery 150 x 80 x 35mm 350g 35mm 150mm +40°C -10°C PD690SX -
RS stock no. 706-8586
Mfr. Part No.MTL10/PD
R 3,609.29
Each
units
3.5mA 50 V ac/dc, 100 V ac/dc, 200 V ac/dc, 400 V ac/dc - - - Mains 213 x 112 x 72mm 320g 72mm 213mm +55°C -10°C - -
RS stock no. 897-7131
Mfr. Part No.RSVT25/PD
BrandMartindale
R 3,544.90
Each
units
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 stock no. 740-1479
Mfr. Part No.PD440
BrandMartindale
R 1,931.69
Each
units
- 440V - AA - Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD440 -
RS stock no. 188-2931
Mfr. Part No.TB118KIT1
BrandMartindale
R 6,829.17
Each
units
3.5mA 600V ac/dc - AA - Battery, Mains 205 x 67 x 27mm 130g 27mm 205mm +40°C -10°C - -
RS stock no. 719-0894
Mfr. Part No.RSPD690
BrandMartindale
R 2,094.68
Each
units
- 700V - AA - Battery 143 x 84 x 50mm 400g 50mm 143mm +40°C -10°C PD690 -