Siemens 20 A SPNO Solid State Relay, Zero Crossing, Chassis Mount Thyristor, 460 V Maximum Load. Minimum Load Current: 0.1 A. Minimum Load Voltage: 230 V. Minimum Control Voltage: 15 V dc. Maximum Control Voltage: 24 V dc. Terminal Type: Screw. Maximum Turn On Time: 1 (+1/2 cycle) ms. Dimensions: 45 x 48 x 57.6mm. Load Voltage Range: 230 → 460V. Operating Temperature Range: -25 → +60°C. MPN: 3RF2020-1AA04