BLOCK USA line and motor reactors provide highly engineered, robust, and economical options for protecting variable frequency drives and motors from harmful power disturbances. For VFD input applications, three-phase LR3 and lightweight, high-efficiency aluminum LR3-AE line reactors support 230/480/575 VAC applications, with ratings up to 250A and a choice of 3% or 5% impedance. NKE single-phase line reactors support 120/230 VAC input applications, with ratings from 4A to 25A and 4% impedance.

 For VFD output applications, MR3 and MDB motor reactors support 230/480/575 VAC systems with ratings from 2.5A to 110A. Select MDB models (72A and higher) accommodate output frequencies up to 120 Hz and motor lead lengths up to 150 meters with shielded cable. BLOCK’s innovative winding technology helps optimize efficiency while minimizing power losses, providing a practical, cost-effective reactor solution across a wide range of AC drive applications.