... 4 Installation easy Product Description for Toroidal transformer:Professional power supply transformer used for the field of pro-amplifier, audio system, ... Static Insulation between Primary and Secondary 10. Punily Leakage Current 11. Easy to mount12. Competitive price and customerized ... 120V, 230V, 240V / 50 Hz c. Secondary Customized Power range: 20VA to 10KVAd. Standard UL506, UL1411, EN61558, ...