... short circuit, convection cooling 3. UL 300w 24v dc power supply led transformer with CE Rohs UL ETS EMC1. Specification of UN300W ... peak current when cold start of the power supply.3. Multi-output power supplies: For power supplies with multi-output, in our ... similar equipment, not considering abnormal working situation of power supplies, air pollution, etc. 300w 24v dc power supply led transformer