Chauvin Arnoux CA742 is a voltage detector with indicator lights. It is an instrument of choice for electricians checking that no voltage is present before working on an electrical installation connected to the network. It complies with IEC 61243-3 Edition 2 and can be used to work on any indoor or outdoor 600 V CAT IV installation. To fulfil the requirements of the standards and legislation in different countries, RS offers different versions - without IP2X accessories ( 914-0021 ) and with IP2X accessories ( 914-0025 ). The CA742 is equipped with a redundant safety system in the event of power supply faults. An 'ELV LED' flashes whenever the voltage exceeds 50 V AC / 120 V DC. The full Autotest of the CA742 checks the electrical circuits, the power supply, the display and the condition of the measurement leads.

Full integrated autotest
Voltage testing up to 690 V AC (16 2/3 Hz - 800 Hz) / 750 V DC
Single-pole phase test
Phase sequence testing up to 400 Hz
Input impedance >300 kΩ
Continuity testing
Removable test probe and cable
Dimensions 163 x 64 x 40 mm
IP65 protection rating
Weight 210 g

The voltages indicated on the CA742 are nominal voltages - users must ensure the device will be used on networks at standardised voltages.

EN 61243-3 Ed.2009, EN 61243-3 Ed.2010, DIN VDE 0682-401 Ed.2011

Red test probe 2 mm diameter, black lead terminated by test probe 2mm diameter (CA742) or 90 cm black lead and 25 cm red lead terminated
by an IP2X probe tip 4 mm diameter (CA742 IP2X) plus (both models) strap, battery (x2), user manual (in 5 languages), verification certificate

Voltage Level Indicators

A range of voltage testers each available in versions suitable for electronic or electrical applications.