Voltage Monitoring Relay Dimensions W x H x D: 35 x 87 x 65 mm Operating temperature: -25...+55 °C Switching capacity: 5 A @ 250 VAC Switching hysteresis: Fixed, approx. 5% Switching threshold: 160 - 240 VAC Tripping delay: approx. 100 ms Operating voltage type: 3-phase Output contact: 2 Change-Over (CO) Protection rating: IP40 Operating voltage: 400 VAC