Ultra reliable industrial control transformer. 480 or 600 V primary and 24 V secondary voltage. 1-phase. 60 Hz operating frequency. Class-B (130°C) insulation class. 40 dB noise level. Insulation tested at a minimum of 2500 Vrms Hi POT. TMB series is a high quality encapsulated transformer available with secondary midget fusing capability. Epoxy encapsulated coils for cooler, safer operation. Moulded terminal barriers. 10-32 screw terminals. Phil-slot screws. SEMS screw terminal strips as an integral part of the coil bobbin. Fusion-welded coil terminations instead of solder joints. Face-on terminal labels with large schematic indicators. Standard strap brackets.