635 CRT-1200

Clamp earth resistance tester – Optical & Acoustic

The clamp can test grounding in hard-to-reach spaces, including indoor or fully paved areas where auxiliary test rods cannot be used. The meter can identify the resistance with no need to disconnect and reconnect the grounding installation. It is widely used in the field of electrical power distribution, telecommunications, construction and industrial electronic equipment.

Technical information

Test voltage: 3700 V
Electric clearance: 6.5 mm (meet IEC1010 double insulation CATII 600 V)
Limiting overload: 40 A RMS current
Mean consumption: 50 mA
Range: automatic
Display type: 4 digits, 9999 counting, liquid crystal display
Power shortage: display symbol
Power supply: 9 V 6F22 Single measurement time: 1s
Working temperature: -10ºC to 50ºC (14°F to 122°F)
Storage temperature: -20ºC to 60ºC (-4ºF to 140°F)
Conductor size: Ø 32mm
Dimensions: 54 x 104 x 32 mm
Weight: approximate 1050 g (include the batteries)

Supplied with a nylon case for transport and storage.
According with standards EN61010-1, EN61010-2-033, EN61326, CAT Ⅲ 600 V / CAT IV 1000 V


If you can’t find your specific product requirement, please call us on 07 3734 7159, or send an email to

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635370 Clamp CRT-1200 1

Products listed on our site are not exhaustive. If you can't find your specific product requirement, please call on 07 3734 7159, or send an email to

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