Conform to UL Safety S tandards Dielectric Strength:2500Vrms Temperature Class: B (130??? Various I nputs O ptions: 100V/110V/115V/120V/220V /230V/240V/480V 50/60Hz Single and Dual or M ore S econdary Power Range: 1.1VA to 600VA Lamination S ize R ange: EI28 to EI133 Assemble S tyle: PCB and Foot M ounting or O thers A ccording to C ustomer's R equirement