... switch 2. protections overload/short circuit, convection cooling 3. UL 300w 24v dc power supply led transformer ... %Withstand voltage I/P -O/P:3.0KVAC/1min I/P -F/G:1.5KVAC/1min O/P-F/G:0 ... GB9254,EN55022 class B, EN55024 EN61000-3-2,3, en61000-4-2,3,4,5,6,8,11Cooling method ... reliability2 years warrantysize: 199x110x50(mm)2 Dimensional drawings: 3. The partial enlarged detail: 4. Technical Instructions::1 ...