Mueller Electric Company Monitor - Relay Output SLU-0200

The SLU-0200 is a phase monitor relay designed for 3-phase AC systems (Wye or Delta) to protect against voltage imbalance, single phasing, and phase reversal. It supports line-to-line voltages up to 550 VAC with adjustable voltage ranges including 200-250 V and 360-500 V for 60 Hz, and 200-250 V and 330-430 V for 50 Hz. The device features adjustable phase unbalance detection (2% to 10%), 1 to 25 second fault delay, and 0.5 to 300 second restart delay with automatic reset. It includes an SPDT relay output rated at 10 A at 240 VAC resistive or 1/2 HP at 240 VAC, and is UL Listed under E55826. The enclosure is a Style "A" 8-pin plug-in with a LEXAN® dust cover. Power consumption is maximum 90 VA. Operating temperature range is 32°F to 131°F (0°C to +55°C). Rapid cycle lockout prevents operation after five cycles within a 30-minute period.