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To show our appreciation for the NHS we will make a donation to the NHS charity for every PrimeTest or Apollo PAT tester bought and registered between the 1st June to 31st July 2020.

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If you're looking for the B255 datasheet featuring full technical specifications or the instruction manual, you can find them here.


Visual Alarmyes
Audible Alarmyes
Measurement functions
Earth bond25A, into 0.1W, from 8V a.c
0 – 1W meter display
Flash test500V, 1250V AC 5 and 10mA trip
3000V, 3750V AC 5mA
Short test40V AC, 0 – 10mA trip
Load/run test230V 0 – 15A
0 – 10mA
110V, 0 – 25A
External Connections
Beacon (EN50191)Yes
Guard Switch

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