1Used for power supply voltage measurement and protection, dual bus wiring designs bring more strong capability 2Voltage relay support self-reset after failure, very practical, you can use with confidence 3Relay status is indicated by LED, you can read clearly in short time, helps a lot 4The product have stable structure and excellent performance, small size is easy to install 53Phase display voltage relay is a necessary medium and low voltage equipment, very useful Item Type: 3-Phase Display Voltage Relay Technical Parameters: GRV8-SN Function: Monitor 3-phase voltage Monitoring Terminal: L1-L2-L3-N Voltage Range(Un): 127-132-138-220-230-240-254-265 (P-N) Rated Power Frequency: 45Hz-65Hz Measuring Range: 70V-400V Measurement Error: 1% Hysteresis: 2% Phase Failure Value: 50% of Un Time Deviation: 5% Temperature Coefficient: 0.05%/, = 20(0.05%, = 68) Output: 2xSPDT Rated Current: 8A / AC1 Switching Voltage: 250V AC / 24V DC Minimum DC Breaking Capacity: 500mW Mechanical Life: 1x10 ^ 7 Electrical Life (AC1): 1x10 ^ 5 Working Temperature: -20 to +55 (-4 to 131) Storage Temperature: -35 to +75 (-220 to 158) Installation/DIN Rail: DIN rail EN/IEC 60715 Protection Level: Front panel IP40 / IP20 terminal Working Position: Any Overvoltage Treatment: lll Pollution Degree: 2 Maximum Cable Size (mm): Solid wire maximum 1x2.5 or 2x1.5 / with sleeve maximum 1x2.5 (AWG 12) Tightening Torsion: 0.4Nm 1 x 3-Phase Display Voltage Relay 1 x User Manual