Portable RCD's (or Safety Switches) provide added protection when using electrical equipment. RCD's cut the power supply to the electrical appliance if a current leakage fault is recognised (a current inbalance between active and neutral). They are designed to help prevent electrocution. The use of RCD's is rapidly becoming compulsory in many parts of Australia and many working environments. Contact your local safety or workcover office for more information.
RCD's should not be confused with lower cost circuit breakers, which cut power supply when the current draw exceeds a specified level (or in abnormal power conditions).
Likewise, surge protectors are designed to protect electrical equipment for voltage spikes and power surges. Again these should not be confused with RCD's.
RCD's should be tested in accordance with local regulation and the AS/NZS3760:2003 which includes measuring and recording the trip time of the RCD (See RCD testers). Please note that some low cost RCD testers available in Australia do not measure trip time or test in accordance with the AS/NZS3760:2003. Contact us for more information.