The SWT/C Digital Time Switch, developed by Borna Electronics, is a powerful scheduling device designed for automatic switching of electrical loads according to predefined time programs. The relay enables users to control equipment and electrical systems based on daily, weekly, or monthly schedules, making it ideal for automation, energy management, and process control applications.
The SWT/C supports up to 99 independent programmable schedules, each with separate ON and OFF times. Users can activate or deactivate specific programs, weekdays, or calendar dates as required. The device also features intelligent schedule conflict detection and integrated voltage protection functions to enhance system reliability.
Features
- Programmable operating modes: Daily, Weekly, and Monthly
- Storage and execution of up to 99 independent timing programs
- Replaceable lithium battery with service life exceeding 5 years
- Retention of date, time, and all settings during power interruptions
- Automatic daylight saving time (DST) enable/disable function
- Ability to activate or deactivate specific programs, weekdays, or calendar dates
- Intelligent detection of schedule conflicts with fault indication
- Overvoltage protection for connected loads
- Undervoltage protection for connected loads
Technical Specifications
| Parameter | Specification |
| Supply Voltage | 170–260 VAC |
| Network Frequency | 50 Hz ±5% |
| Internal Power Consumption | 3 W |
| Voltage Protection Range | 175–255 VAC |
| Protection Degree | IP20 according to IEC 60529 |
| Operating Temperature | -20°C to +60°C |
| Relative Humidity | 15% to 85% |
| Mounting Method | DIN Rail and Flush Mounted according to IEC 60715 |
| Output Models | SWT10/C: One C/O contact, 10 A | SWT20/C: One 20 A output |
Applications
- Lighting control systems
- Industrial automation
- Energy management systems
- Building automation
- Pump scheduling
- Process control applications
- Timed operation of electrical equipment