Solcon RVS-EX 8-310A, 208-600V & 390-1100A up to 1100V Low Voltage Soft-Starter for ATEX Motors Home » Solcon RVS-EX 8-310A, 208-600V & 390-1100A up to 1100V Low Voltage Soft-Starter for ATEX Motors Read more about Solcon’s Digital Microprocessor Based Soft-Starter using the RVS-DX platform modified and approved for starting low voltage Ex motors in: Ex-E; Ex-N; Ex-D; Ex-P environments.