Three-phase line voltage monitor offering protection against phase loss/reversal, and unbalance; 50/60 Hz, 190-600 VAC (115 or 208/240 control VAC) - DIN rail mount Low cost 3-phase protection for single-side Monitors for phase reversal, phase loss, unbalance % as a function of input voltage Bright LED indicators for ON and FAULT Universal three-phase input: 190-600 VAC Control voltage: 115 and 208/240 VAC Highly reliable passive electronics Patented: U.S. Patent No. 5,337,206 DIN Rail Mount Â