Chauvin Arnoux CA6418 Earth Clamp

Accurate earth testing often requires a simple tool that works without disconnecting the installation. The Chauvin Arnoux CA6418 Earth Clamp measures leakage current and loop resistance directly on the earth conductor. Because of its clamp design, technicians can perform checks quickly while keeping the installation in service.

Reliable readings help confirm system safety and compliance with electrical regulations. This instrument measures earth leakage currents up to 20 A AC and loop resistance from 0.01 Ω to 1200 Ω. As a result, the Chauvin Arnoux CA6418 Earth Clamp suits routine inspection, maintenance, and troubleshooting tasks.

Accurate earth and current measurements

Precise testing supports safe operation of electrical systems in many environments. The Chauvin Arnoux CA6418 uses high resolution measurement with current accuracy of ±2 percent and loop resistance accuracy up to ±1.5 percent. In addition, the oblong clamp jaw fits both cylindrical and rectangular earth bars, allowing measurements even in restricted spaces.

Designed for practical field testing

Work on site often takes place in low light areas or crowded installations. A bright OLED display provides clear readings while alarms warn users when set limits are exceeded. The Chauvin Arnoux CA6418 Earth Clamp also stores up to 300 time stamped measurements for easy review later.

Field engineers benefit from long battery life and dependable construction. One set of batteries supports up to 2400 measurements, which reduces interruptions during inspection work. With automatic calibration and a strong enclosure rated to IP40, the Chauvin Arnoux CA6418 Earth Clamp delivers reliable performance for professional testing.

Key Features

Measures earth leakage current without disconnecting the earth conductor
Supports loop resistance measurement across a wide range
Oblong clamp jaw fits different earth bar shapes and sizes
Clear OLED screen improves visibility during low light work
Stores measurement data with automatic time and date record
Audible alarms warn when current or resistance limits are exceeded
Automatic calibration ensures stable measurement accuracy
Automatic display hold when the clamp jaw is opened
Lightweight design improves comfort during long inspections
Portable clamp style tester simplifies earth system checks
Battery powered design supports field testing
Supplied calibration loop helps verify measurement accuracy

Technical Specifications

Manufacturer	Chauvin Arnoux
Product name	CA6418 Earth Clamp
Manufacturer part code	P01122018
Current measurement range	0.5 mA to 20 A AC
Current accuracy	±2 percent
Current resolution	50 µA to 100 mA depending on range
Loop resistance range	0.01 Ω to 1200 Ω
Loop resistance accuracy	±1.5 percent to ±20 percent depending on range
Loop resistance resolution	1 mΩ to 50 Ω depending on range
Clamp opening compatibility	Fits 30 × 40 mm or 20 × 55 mm rectangular bars and 32 mm cylindrical bars
Display	OLED 152 segment display with 48 × 39 mm active area
Memory capacity	300 readings with date and time stamp
Power supply	4 × 1.5 V LR6 AA alkaline or NiMH batteries
Battery performance	Up to 2400 measurements with 30 second tests
Calibration	Automatic calibration with manual recalibration capability
Safety rating	CAT IV 100 V CAT III 150 V
Ingress protection	IP40
Dimensions	300 × 106 × 56 mm
Weight	Approx. 1.2 kg including batteries

Document Downloads

Chauvin Arnoux CA6418 Earth Clamp - Datasheet (Size: 1 MB)

What’s Included