Image is Representational - See Manufacturer Specs | Solid State Relay - 4-32 VDC Control Voltage Range - 3 A Maximum Load Current - 1-60 VDC Operating Voltage Range - Zero Voltage Turn-On - LED Input Status Indicator - DIN Rail Mounting. The DR06D03 solid state relay fits standard 35mm DIN rail. Dimensions of this relay are: 3.45 (87.6mm) x 3.3 (83.7mm) x 0.43 (11mm).