The DLM/C Digital Load Monitoring Relay, developed by Borna Electronics, is a compact microprocessor-based protection device designed for monitoring and protecting both three-phase and single-phase loads. Utilizing advanced digital technology and a space-saving three-module DIN-rail design, the relay provides comprehensive protection against overcurrent, undercurrent, and current imbalance conditions.
The current sensing module is supplied in a separate enclosure, simplifying installation and wiring. A built-in digital current display together with nine LED status indicators provides clear information about operating conditions and fault status. Available in current ranges of 0.5–20 A and 10–60 A, the DLM/C is a modern and highly reliable alternative to conventional thermal overload (bimetal) relays
Features
- Protection of single-phase and three-phase electrical loads
- Dry-run protection for water pumps
- Advanced digital replacement for thermal overload (bimetal) relays
- Available current ranges: 0.5–20 A and 10–60 A
- Overcurrent protection based on I²t characteristic curve
- Undercurrent detection according to adjustable settings
- Current imbalance detection according to adjustable settings
- Nine LED indicators for operating status and fault diagnostics
- Selectable manual or automatic reset modes
- Configurable output logic for contactor or shunt-trip circuit breaker applications
Technical Specifications
| Parameter | Specification |
| Supply Voltage | 180–250 VAC |
| Network Frequency | 50 Hz ±5% |
| Internal Power Consumption | Approx. 3 W |
| Current Range | 0.5–20 A or 10–60 A |
| 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 Relay | One C/O (SPDT) contact, 6 A |
Applications
- Water pump protection systems
- Motor protection applications
- Industrial control panels
- Pumps and compressors
- Industrial machinery
- Protection against overload, underload, and current imbalance conditions
The DLM/C Digital Load Monitoring Relay delivers accurate and intelligent load protection, helping to prevent equipment damage, detect dry-running pumps, improve system reliability, and reduce maintenance costs.