Accessories for Quattro Relay 114 Modules for Socket Z376.02 Z376.51 24 V DC 36 +A2 A1– 12 20 U OBSOLETE A1+ - A2 A1 + - A2 A1 A2 Protection / luminous diode for 24 VDC Protection diode for 6 - 220 VDC Varistor for 24 VAC Z376.52 Z376.53 Z376.54 standard polarity standard polarity U Z376.55 Z376.58 A1 A2 A1 A2 Varistor for 230 VAC Luminous diode for 230 VAC A1 - + A2 A1 - + A2 Z376.51 Z376.50 Protection / luminous diode for 24 VDC Protection diode for 6 - 220 VDC reverse polarity reverse polarity Kuhnke 24 Relay Catalogue