S48-4S number display time relay is a power-on cycle delay start, delay close type time relay, the product has 8 terminal blocks, a group of switching contact switch output. The product has the characteristics of high brightness LED digital tube display, full digital dial setting, high precision timing chip, good anti-interference performance.
The S48-4S digital time relay offers cyclic delay control with high‑brightness LED display and fully digital dip‑switch settings. After power‑on, the relay counts down to the T1 setting, switches its contacts, then counts to T2 and returns to the initial state, repeating the cycle. Pause and reset functions are available via external terminals.
The manual details the product’s structure, wiring diagram, mechanical dimensions, installation options (panel, device, rail), and key performance parameters such as rated voltage, timing accuracy, contact ratings, and environmental tolerances. This manual is written in Chinese.
| Rated Working Voltage | AC220V |
|---|---|
| Delay Repetition Error | ≤±1% |
| Timing Accuracy | 0.03%+10 ms |
| Power Voltage Fluctuation Error | ≤±5% (85%–110% of rated voltage) |
| Temperature Error | ≤±10% (‑10 °C to +40 °C) |
| Contact Capacity | AC250V 5A cosφ=1; DC24V 7A |
| Installation Methods | Panel‑type, device‑type, rail‑type |
| Mechanical Life | 1×10 times |
| Electrical Life | 1×10 times |
| Delay Range | 9.9 s, 99 s, 990 s, 9.9 min, 99 min, 9.9 h, 99 h |
Connect the pause terminal (pins 1 and 4) to stop the timer while the current time remains displayed; releasing the connection resumes timing.
Connect the reset terminal (pins 1 and 3) at any time; the relay returns to its initial condition.
The relay can be installed as a panel‑type, device‑type, or rail‑type unit.