Terminal Blocks Sectional Relay Blocks: Block Type - Terminal Coupling Relay; Voltage - Maximum Switching - 30VDC; Voltage - Operating - 110-230VAC/DC; Amps - 3A; Contact Style - Screw; Mounting - DIN Rail, TH35; Temperature Rating - -25 deg C to 60 deg C; Block Width - 6.2 mm; Manufacturer Series - 3TX7