The OCM AC/DC Overcurrent Monitoring Relay, developed by Borna Electronics, is designed to protect electrical systems and equipment against excessive AC or DC current conditions. The relay continuously monitors the load current and activates its protective output whenever the measured current exceeds the user-defined threshold.
With a current detection range of 1 to 6 A AC/DC and a wide-range auxiliary power supply, the OCM relay can be easily integrated into industrial automation systems, power distribution equipment, battery charger systems, and various electrical control applications. The trip delay can be adjusted via the front-panel DELAY control to prevent nuisance tripping caused by temporary current surges.
The relay supports both automatic reset and latching operating modes, offering flexibility for different protection requirements.
Features
- AC and DC overcurrent detection
- Current monitoring range from 1 to 6 A AC/DC
- Available with separate auxiliary power supply from 24 to 380 V AC/DC
- Adjustable current threshold from 20% to 120% of the nominal current
- Adjustable trip delay from 0.15 to 10 seconds
- Selectable automatic reset and latching operating modes
- Two LED indicators: PWR (Power Supply Status) and FAULT (Fault Indication)
Technical Specifications
| Parameter | Specification |
| Supply Voltage | 220 VAC ±15% (other voltages available upon request) |
| Network Frequency | 50 Hz ±5% |
| Internal Power Consumption | Approx. 2 W |
| Adjustable Current Range | 20% to 120% of nominal current |
| Protection Degree | IP20 according to IEC 60529 |
| Operating Temperature | -20°C to +60°C |
| Relative Humidity | 15% to 85% |
| Mounting Method | DIN Rail according to IEC 60715 |
| Output Relay | One C/O (SPDT) contact, 6 A |
Applications
- Industrial control panels
- Motor protection systems
- Battery charger systems
- Industrial UPS systems
- Power distribution equipment
- Process automation systems
- Protection of electrical and electronic equipment against overcurrent conditions
The OCM Overcurrent Monitoring Relay provides reliable protection against excessive current conditions, helping to prevent equipment damage, improve operational safety, and increase system reliability in both AC and DC applications.