Asymmetric Cycler Time Relay SRT8-S1
The Asymmetric Cycler Time Relay SRT8-S1 is a precision industrial component made for automatic lighting control, ventilation cycles, and pump operations. This time delay relay works with a cycle signal to start its function. It is widely used across Lahore’s industrial and commercial setups where timing accuracy matters in control circuit components.
Description
Key Features
- 1-time function – starts with the cycle signal
- Function selection – done by an external bridge between S-A1 terminals
- 10 adjustable time ranges – from 0.1 seconds up to 100 days
- LED indicators – show relay status clearly
- DIN rail mounting – fits standard electrical panels
- 1 module width – saves space in your control box
Time ranges available:
(0.1s–1s / 1s–10s / 0.1min–1min / 1min–10min / 0.1hrs–1hr / 1hrs–10hrs / 0.1day–1day / 1day–10days / 3days–30days / 10days–100days)
Applications
This industrial time delay relay is suitable for:
- General room ventilation
- Periodic dehumidification
- Automatic lighting control timer
- Circulation pumps
- Signage and display timers
- Ventilation control timer for factories and offices in Lahore
- Pulse relay switching in control panels
Whether you need an off delay timer, on delay timer, or adjustable interval relay, the SRT8-S1 handles all these jobs.
Technical Parameters of SRT8-S1 Time Relay
| Parameter | Details |
| Function | Asymmetric cycler time relay |
| Supply terminals | A1-A2 |
| Voltage range | AC/DC 12-240V (50-60Hz) |
| Burden | AC 0.7-3VA / DC 0.5-1.7W |
| Power input | AC max. 12VA / 1.3W |
| Supply voltage tolerance | -15% to +10% |
| Supply indication | Green LED |
| Time ranges | 0.1s–100 days / 0.1s–100 units |
| Time setting | Potentiometer |
| Time deviation | 5% mechanical setting |
| Repeat accuracy | 0.2% of set value |
| Temperature coefficient | 0.05%/°C at -20°C |
| Output | 1×SPDT (TKIA) |
| Current rating | 16A / AC1 |
| Switching voltage | 250VAC / 24VDC |
| Min. breaking capacity DC | 500 mW |
| Output indication | Red LED |
| Mechanical life | 1×10⁷ |
| Electrical life (AC1) | 1×10⁶ |
| Reset time | Max. 200 ms |
| Operating temperature | -20°C to +55°C |
| Storage temperature | -35°C to +75°C |
| Mounting | DIN rail EN/IEC 60715 |
| Protection degree | IP40 (front) / IP20 (terminals) |
| Operating position | Any |
| Overvoltage category | III |
| Pollution degree | 2 |
| Max. cable size | Solid 1×2.5 or 2×1.5 with sleeve 1×2.5 (AWG12) |
| Dimensions | 90 × 18 × 64 mm |
| Weight | 62 g |
| Standards | IEC/EN 61812-1, IEC/EN 61010-1 |
Why Choose This Time Relay for Your Lahore Project?
Switchgear components like the SRT8-S1 are essential for electrical control automation. This definite time relay works as both a time overcurrent relay and a protection relay for various circuits. It is a Modular timer switch that handles relay switching time with repeat accuracy. Whether you need inverse time overcurrent relay features or simple on/off cycles, this unit delivers.
Frequently Asked Questions (FAQs)
What is a time relay?
A time relay is basically a device that controls when outputs turn on or off. It’s used in things like automation, lighting, and motor controls after a certain amount of time has passed.
What is the difference between a relay and a timer relay?
A standard relay turns on right away when it gets power. In contrast, a timer relay waits for a set time before activating. The SRT8-S1 is an asymmetric cycler, meaning it gives different on and off times in a loop.
What is the function and purpose of a relay?
A relay uses a small control signal to switch a larger load. It protects circuits and allows automation. In the SRT8-S1, the purpose is to run cyclic operations like fans or lights automatically.
Ready to Order?
Buy the Asymmetric Cycler Time Relay SRT8-S1 online from Jawad Electric – trusted supplier of time relays and control circuit components in Lahore and across Pakistan.
