... heating elements2. Transformer, ballast.3. Coil.* Type Classification of bimetal thermostat:1. Type 2B: Automatic Control, micro-disconnection on operation, and, ... is widely used in transformers and other heating appliances, type 2B is the most suitable classification.* Crucial tests ... no flashover or breakdown.2. Endurance test: Number of automatic cycles declared as 10,000 cycles, the test shall ...