IEC 60316: Safety of Household Appliances — The Precursor to the IEC 60335 Series

The “Grandfather” of IEC 60335 — How IEC 60316 Established the Foundation for All Appliance Safety

IEC 60316 was the early household appliance safety general requirements standard — later superseded by the IEC 60335 series. Its protection classes (Class 0/I/II/III), creepage/clearance calculation, and temperature-rise test methods remain the fundamental framework for all appliance safety standards today.

TNLab — The “Class II double-square symbol” every engineer and consumer recognizes comes from the IEC protection class system.