Socket Testers

A socket tester is a small, handheld device that is plugged into a socket to quickly confirm if an AC wall socket is working. Testers also identify if the socket is producing the power rating expected from a socket.

Socket testers are used to ensure that the wiring is the correct and can detect if there is no earth, however, cannot check if the earth is in good condition if it is there.

The simple interface features lights on the front of the tester that will light up in different combinations, this will indicate if there is a fault and show the user exactly what the fault is.

Different types of socket testers:

Simple testers can detect a number of different faults but they cannot indicate or measure the earth fault loop impedance. They are normally the same size as a 13A plug.

Advanced testers have the same normal functions that a simple tester has including reversed line and earth, or reversed line and neutral. They display the range of numerical values that the earth fault loop impedance falls.

Professional testers have the same normal functions that a simple tester has, including the numerical value of earth loop impedance reading. They also are used to measure the values of earth loop impedance to certify or report on the installation that has been carried out.

Who would use a socket tester?

Electricians, maintenance personnel, DIY enthusiasts, handymen and equipment installers would generally have a mains socket tester in their toolbox to check the safety of the socket and prevent shocks and accidents from occurring.


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Description Price Current Rating Voltage Audible Alarm Earth Loop Impedance Test Number of Pins Wiring Check Display Type Safety Category Power Source Dimensions Weight Height Length Maximum Operating Temperature
RS Stock No. 719-0885
Mfr. Part No.RSCP501
BrandMartindale
SGD36.61
Each
units
13A 200 → 250V ac - - 3 Yes LED CAT II 300 V Mains 65 x 65 x 47mm - 47mm 65mm +40°C
RS Stock No. 719-3001
Mfr. Part No.SOK 32
SGD56.21
Each
units
13A 230V ac Yes - 3 Yes LED - Mains - - - - +40°C
RS Stock No. 704-7747
Mfr. Part No.SOK 36
SGD91.42
Each
units
13A 230V ac Yes Yes - Yes LED - Mains - - - - -
RS Stock No. 719-0891
Mfr. Part No.RSBZ101
BrandMartindale
SGD40.58
Each
units
13A 230V ac Yes - 3 Yes LED CAT IV 300 V Mains 65 x 65 x 47mm - 47mm 65mm +40°C
RS Stock No. 719-0905
Mfr. Part No.RSEZ650
BrandMartindale
SGD213.86
Each
units
13A 230V ac - Yes 3 Yes LED CAT II 300 V Mains 315 x 260 x 85mm 1kg 85mm 315mm +40°C
RS Stock No. 253-535
Mfr. Part No.RSCP201
BrandMartindale
SGD89.49
Each
units
16A 230V ac - - 3 Yes LED CAT III 300 V Mains 65 x 65 x 47mm 195g - - -
RS Stock No. 776-1995
Mfr. Part No.MARPC104/16
BrandMartindale
SGD162.71
Each
units
16A - - Yes 4 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 776-2008
Mfr. Part No.MARPC104/32
BrandMartindale
SGD192.98
Each
units
32A - - Yes 4 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 467-4964
Mfr. Part No.SOK 40/16
SGD98.15
Each
units
16A 230V ac Yes - 3 Yes LED - Mains - - - - -
RS Stock No. 471-3277
Mfr. Part No.P01101997Z
SGD27.77
Each
units
- 230V ac No - 3 Yes LED CAT II 230 V Battery 95 x 50 x 38mm 60g 38mm 95mm +55°C
RS Stock No. 704-7738
Mfr. Part No.SOK 34
SGD77.69
Each
units
13A 230V ac Yes Yes - Yes LED - Mains - - - - -
RS Stock No. 776-2017
Mfr. Part No.MARPC105/63
BrandMartindale
SGD331.48
Each
units
63A - - Yes 5 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 776-2001
Mfr. Part No.MARPC104/63
BrandMartindale
SGD317.87
Each
units
63A - - Yes 4 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 467-5002
Mfr. Part No.SOK 65/16HD
SGD146.00
Each
units
16A 400V ac Yes Yes 5 Yes LED - Mains - - - - -
RS Stock No. 180-9211
Mfr. Part No.CP301/32
BrandMartindale
SGD104.14
Each
units
16/32A 110V ac - - 3 - - CAT II 150 V Mains 65 x 47 x 65mm 195g 65mm 65mm +40°C
RS Stock No. 776-2014
Mfr. Part No.MARPC105/32
BrandMartindale
SGD181.93
Each
units
32A - - Yes 5 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 180-9210
Mfr. Part No.CP201/32
BrandMartindale
SGD109.83
Each
units
16/32A 230V ac - - 3 - - CAT III 300 V Mains 65 x 47 x 65mm 195g 65mm 65mm +40°C
RS Stock No. 180-9212
Mfr. Part No.EZ165
BrandMartindale
SGD124.16
Each
units
13A 230V ac - Yes - - - CAT II 300 V Mains 80 x 45 x 65mm 95g 65mm 80mm +40°C
RS Stock No. 776-2005
Mfr. Part No.MARPC105/16
BrandMartindale
SGD189.48
Each
units
16A - - Yes 5 Yes Front Panel CAT III 300 V Mains 131 x 94 x 54mm 292g 54mm 131mm -
RS Stock No. 253-541
Mfr. Part No.RSCP301
BrandMartindale
SGD104.44
Each
units
30mA 110V ac - - 3 Yes LED CAT II 150 V Mains - 180g - - -
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