SSM1 relays, 22.5 mm/0.886 in. (20 A, 30 A) width and 45 mm/1.771 in. (45 A, 55 A) width. Lugs for panel mounting. Built-in heat sink for heat dissipation. Control input connection terminals. Control input voltage LED indicator in green. Bracket for mounting on 35 mm/ 1.378 in. DIN rail. Load output connection terminals.AD-SSR8 Series Solid State Relays. The Class 8 solid state relays offer energy efficient current switching in a slim housing ideal for space-saving applications. AC & DC Input, AC Output 10 Amp loads Internal heat sink Finger-safe terminals DIN Rail or panel mounting Optically coupled circuit UL file # E222847, CE, CSA, RoHSDIN rail solid state relay. ERCA1. Switching current: 25 A - 40 A. The Solid State Relays ERCA SERIES is a 4-20mA power regulator that contain load current of 25, 40, 50, 70A, 180 ~ 280 V AC, 180 ~ 420V AC and load voltage consistent solid ... Compare this product Remove fromparison tool.The configuration of the SSR and heat sink can bepared with a circuit. (See Figure 3.) The heat sink’s thermal rating is labeled Rsa. The case to heat sink thermal rating (Rcs) depends on the effectiveness of inter-facing the relay to the heat sink. This value is assumed to be 0.1°C/W.