Feed-Thru Blocks, With Internal Component: Type - Surge Suppressor Terminal Block; Component Rating - 250mA; Configuration/Wiring - Double Tier 4-Wire; Construction Style - IEC; Rating - Voltage - 24VDC; Rating - Amps - 250mA; Wire Range - 24-14 AWG; Model Type - TT-EXI-M-24DC; Wire Terminal - Screw Clamp; Housing Material - Polyamide 6.6; Housing Finish - Blue; Mounting - DIN Rail, 35mm; Temperature Rating - max - 80 deg C 176 deg F; Temperature Rating - min - -40 deg C -40 deg F; Block Width - 0.24" 6.2mm; Block Height - 3.60" 92mm; Block Length - 2.16" 55mm; Additional Information - Disconnect Knife on Both Signal Paths, Separate PE Connection; Manufacturer Series - TT Series