R Type Series PT-57E16-R (1) 12VA (2) UL, CSA Elec.
PT-57E22-R - Power Transformers
R Type Series PT-57E16-R (1) 12VA (2) UL, CSA Electrical appliances and materials safety law (3) 1.5kV (4) Hard pin adopted. R Type Series PT-57E19-R .PT-57E22-R1 - Power Transformers
R Type Series PT-57E19-R1 (1) 13VA (2) BS-415, IEC-65 (3) 4kV (4) Hard pin adopted. R Type Series PT-57E22-R1 (1) 15VA (2) BS-415, IEC-65 (3) 1.5kV, 4.