The current transformers are made according to IEC-185 standard. Technical data Class of accuracy: 1. 0 or 0. 5 Rated voltage: 600V Rated frequency: 50/60Hz Security factor: FS 5 Working temperature range: -20~+45℃ ABS plastic case, totally enclosed, built-in cover, and several ampere outputs at secondary side iron plate for fixing metal housing-2 pieces-1, iron bar and screw for fixing copper bar-3 pieces. Model Rated Current(A)Primary/Secondary Accuracy Rated Burden(VA) MSQ-30 50/5A-300/5A 1. 0 2. 5-5 MSQ-40 150/5A-500/5A 1. 0 5 MSQ-60 400/5A-1200/5A 1. 0 10 MSQ-100 800/5A-3000/5A 1. 0 15