The manual provides installation, operation, maintenance, and troubleshooting instructions for Young Tech YT-520/525/530 snap acting relays.
This product manual covers the YT-520, YT-525, and YT-530 snap acting relays, describing their general features, specifications, and operation logic. It includes safety guidelines, installation steps, dimension data, and wiring information.
The document also details regular maintenance procedures, a parts list for repair kits, and a troubleshooting guide with common fault symptoms and corrective actions. Warranty information and manufacturer contact details are provided at the end.
| Signal Pressure | 0.14 – 0.7 MPa (1.4 – 7 bar) |
|---|---|
| Maximum Supply Pressure | 1 MPa (10 bar) |
| Signal Connection | PT, NPT 1/4 |
| Flow Capacity (Cv) | 0.9 – 1.8 |
| Sensitivity | 0.01 MPa |
| Ambient Temperature Range | -20 °C to 70 °C |
| Material | Aluminum (YT‑520/525), Stainless Steel 316 (YT‑530) |
| Weight (YT‑520) | 0.73 kg |
The factory default setting pressure level is 3 kgf/cm².
Replace the upper diaphragm assembly (1), lower diaphragm (1), and O‑rings (2) at the same time.
The maximum supply pressure is 1 MPa (10 bar).