SSR-40 DD 40A 5-220VDC Solid State Relay for Industrial Automation Processes

General Description: The SSR-40 DD solid-state relay is designed for industrial automation applications. It offers spark-free switching, high switching speed, and quiet operation. This module is particularly suited to harsh environments such as corrosive, humid, or dusty ones, and is ideal for automatic control systems, including temperature controllers. Technical Specifications Item Type: Solid State Relays Material: Plastic + Metal Input Voltage: 3-32 VDC Input Current: 6-12 mA Output Voltage: 5-220 VDC Output Current: 40 A Voltage Drop in On State: ≤ 1 V On/Off Time: ≤ 10 ms Leakage Current in Off State: ≤ 2 mA Insulation Voltage: ≥ 1500 VAC Package Weight: Approx. 120 g Installation A heatsink is recommended to aid heat dissipation, especially for relays with a working current above 10 A. It is advisable to apply thermal grease between the relay and The radiator for better heat dissipation. When the radiator surface temperature reaches approximately 60°C, the use of forced air is recommended. Usage: The actual operating value of the output current should be limited to 1/3 of the rated value to avoid damaging the relay. For example, for a 40 A relay, it is advisable not to exceed 12 A.