Power Solid State Relay with internal voltage protection, output range is 12-275VAC 25A, input range is 3-32VDC, with current limiter, can be applied to motors, lamps, heaters and other equipment.
This manual describes the Celduc SA842070 solid‑state relay, including its electrical characteristics, control voltage range (3‑32 VDC) and output capability (12‑275 VAC, 25 A). It also covers protection features such as internal voltage protection, input over‑voltage protection, and IP20 transparent cover options.
Installation guidance includes recommended wiring methods, torque specifications, and the requirement to mount the relay on a heatsink using thermal grease. Thermal performance curves and heatsink selection are provided to ensure reliable operation under various ambient temperatures and duty cycles.
| Input voltage range | 3‑32 VDC |
|---|---|
| Output voltage range | 12‑275 VAC |
| Rated current | 25 A |
| On‑state voltage drop (25 °C) | 0.85 V |
| Zero‑cross level | 20 V |
| Input‑to‑output insulation | 4000 VRMS |
| Weight | 85 g |
| Ambient temperature range | -40 °C to 48 °C |
| Storage temperature range | -40 °C to 125 °C |
The relay operates with an input voltage between 3 VDC and 32 VDC.
It is rated for a continuous output current of 25 A.
The SSR must be mounted on a heatsink and thermal grease should be applied between the device and the heatsink.
It includes input over‑voltage protection, internal voltage protection, and optional IP20 transparent cover for touch protection.