This document introduces the DDDD series solid-state relays from Shenyang Bestall Electronic Equipment Research Institute. The series features direct current control and direct current output, and is suitable for controlling various direct current power actuating mechanisms in the field of industrial automation.
The D series solid state relay is a DC‑input, DC‑output device that offers level conversion, isolation and control. It is suited for connecting computers and digital circuits to various DC actuators such as lighting, small DC motors, power supplies, electromagnetic devices and smart meters, and can also serve as a driver stage for high‑current outputs. It is especially useful in corrosive, humid or explosion‑proof environments.
Installation is through‑hole PCB mounting. The relay includes technical parameters such as control voltage 8‑40 V, output voltage 5‑220 V, isolation voltage 2500 Vac, insulation resistance 500 MΩ and operating temperature –30 °C to 80 °C. When operating at high ambient temperature, de‑rate the current and limit surge currents for capacitive loads or instantaneous over‑voltage for inductive loads. This manual is written in Chinese.
| Dimensions (mm) | 42 × 25 × 12 |
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It can control DC loads such as lighting equipment, small DC motors, DC power supplies, various electromagnetic devices and smart meters.
The rated current should be de‑rated, surge current limited for capacitive loads, and instantaneous over‑voltage limited for inductive loads.
It is mounted as a through‑hole component on a PCB.