This Standard specifies essential safety requirements for residual current devices and residual current relays intended to isolate supply or initiate a ‘tripping' signal to isolate supply to protected circuits, socket-outlets or equipment in the event of a current flow to earth, which exceeds a predetermined level, and—

(a) have rated residual currents not exceeding 300 mA;

(b) have rated load currents not exceeding 125 A a.c.;

(c) are designed for use at low voltage; and

(d) are classified in accordance with Clause 4.

The devices may be fixed or portable or, may be integral with a switching device or miniature overcurrent circuit breaker or, may be supplied as a separate attachment.

This Standard does not apply to—

(i) devices intended to be used with a particular circuit breaker other than a miniature overcurrent circuit-breaker, as defined in AS/NZS 3111 or AS/NZS 60898.1; or

(ii) devices intended to protect an electricity authority distribution system; or

(iii) devices for the protection of equipment for mines and covered by the AS/NZS 2081 series of Standards.