Image is Representational - See Manufacturer Specs | Solid State Relay - 4-32 VDC Control Voltage Range - 12 A Maximum Load Current - 24-280 VAC Operating Voltage Range - Zero Voltage Turn-On - LED Input Status Indicator - ATEX II 3G Ex nA IIC T4 Gc Approved - DIN Rail Mounting. The DR24D12X solid state relay fits standard 35mm DIN rail. Dimensions of this relay are: 3.45 (87.6mm) x 3.3 (83.7mm) x 0.72 (18.3mm).