The SDR/C Digital 32A Single-Phase Voltage Protection Relay, developed by Borna Electronics, is a high-performance protection device designed for residential, commercial, and industrial single-phase applications. Featuring a high-current 32 A output and a built-in digital display, the relay provides accurate voltage monitoring and reliable protection against abnormal power conditions.
The integrated 7-segment display continuously shows the mains voltage and the remaining reconnection delay time, allowing users to monitor system status at a glance. The SDR/C protects connected equipment against overvoltage, undervoltage, phase-loss conditions, and repetitive power interruptions, making it an ideal solution for loads up to 6 kW.
Features
- Protection of single-phase loads against overvoltage conditions
- Protection of single-phase loads against undervoltage conditions
- Protection against phase-loss conditions
- Suitable for single-phase loads up to 6 kW
- Integrated anti-short-cycle timer
- Built-in 7-segment display for voltage and delay indication
- Display functions: U = Network Voltage, T = Reconnection Delay Time
- LED indicators for output status, timing operation, and fault conditions
- Selectable reconnection delay using front-panel push button
- High-current 32 A output without the need for an external contactor
Technical Specifications
| Parameter | Specification |
| Supply Voltage | 220 VAC ±20% |
| Network Frequency | 50 Hz ±5% |
| Internal Power Consumption | Approx. 3 W |
| Reconnection Delay | 60 seconds for household appliances, 180 seconds for air conditioners and main protection applications |
| 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 Current | 32 A |
Applications
- Residential electrical installations
- Commercial buildings
- Industrial single-phase loads
- Air conditioning systems
- Household appliances
- Main power protection after energy meters
The SDR/C Digital Voltage Protection Relay combines advanced voltage protection, high-current switching capability, and real-time digital monitoring in a compact device, providing enhanced safety and reliability for modern electrical installations.