Sets out conditions to be met by thermal detectors for building into or onto the windings of electric motors, and by motor control units intended to be used therewith, for protection of the insulation from excessive thermal degradation whilst permitting maximum utilization of the motor's capability. Covers two protection type classifications, viz. the motor protected against overheating when running on load only and against overheating both when running and when stalled.

AS 1023.1-1985

Low voltage switchgear and controlgear — Protection of electric motors, Part 1: Built-in thermal detectors and associated control units