The GQ 15 / 25 / 50 / 90 A single-phase solid-state relay is an AC solid-state relay with anti-parallel gate-controlled thyristor output, which is the most widely used solid-state relay in industrial applications. It can be used for resistive, inductive and capacitive loads. The relay is turned on when the voltage reaches zero and turned off when the current reaches zero, according to the signal of the input circuit. When the relay is required to withstand high current for a long time, it is necessary to provide appropriate power dissipation and sufficient electrical connection between the relay terminals and the load.
This manual provides an overview of the GEFRAN GQ‑15/25/50/90A single‑phase solid‑state relays, describing their key characteristics, electrical ratings and thermal performance. It includes technical data tables, wiring diagrams and recommended installation procedures.
Safety guidelines, compliance with international standards (EN 60947‑4‑3, EN 61000‑4‑2, etc.) and maintenance recommendations are also covered to ensure reliable operation in industrial environments. This manual is written in Japanese.
| Rated voltage | 24‑230 Vca (max 20‑253 Vca) |
|---|---|
| Rated current (GQ‑15) | 15 A RMS |
| Rated current (GQ‑25) | 25 A RMS |
| Rated current (GQ‑50) | 50 A RMS |
| Rated current (GQ‑90) | 90 A RMS |
| Maximum short‑circuit voltage | > 4000 Vca |
| Operating temperature range | -25 °C to +80 °C (some models up to +100 °C) |
| Power consumption (standby) | < 13 mA @ 32 V |
The relays are rated for 24‑230 Vca, with a maximum voltage of 20‑253 Vca.
The relays operate from –25 °C up to +80 °C, and some versions are specified up to +100 °C.