CNC EL240326 Voltage and Current Monitoring Relay, 63A, 230V AC, DIN Rail

For installations where both voltage and current must stay within strict limits, the CNC EL240326 monitoring relay offers a rare combination of 63A capacity and adjustable protection thresholds in a compact DIN-rail unit. Unlike simple voltage relays, it continuously measures live current and disconnects the load when either parameter drifts outside the user-defined window, then automatically restores power after a configurable delay. This makes it especially valuable for protecting motors, compressors, and heating circuits from brownouts, overvoltage spikes, and prolonged overloads without needing a separate current transformer.

Highlights

• Rated current up to 63A, suitable for direct connection of single-phase loads
• Adjustable over-voltage (230–300V AC) and under-voltage (140–210V AC) protection
• Adjustable over-current protection from 1A to 63A with ±2% measurement accuracy
• Automatic recovery with selectable delay from 1 to 300 seconds
• Bright LED display shows real-time voltage, current, and power
• 35mm DIN rail mounting, flame-retardant PC housing, 2P (live and neutral)

In daily use

The EL240326 is installed in series with the protected circuit and powered directly from the monitored line. Its digital display cycles through voltage, current, and power readings, giving immediate feedback on load conditions. When voltage exceeds the over-voltage threshold, the relay opens the circuit and the display flashes the relevant value. Once the supply returns to the recovery range, the relay waits for the preset delay and then re-energises the load. The same logic applies to under-voltage and over-current events. Because thresholds and delays are set via front-panel buttons, no external programming tools are needed. The internal current sensor eliminates the need for an external CT, simplifying wiring and reducing potential failure points.

Full specifications

• Rated current: 63A
• Rated voltage: 230V AC, single phase
• Over-voltage protection range: 230–300V AC (adjustable)
• Under-voltage protection range: 140–210V AC (adjustable)
• Over-current protection range: 1–63A (adjustable)
• Over-voltage recovery range: 225–295V AC (adjustable)
• Under-voltage recovery range: 145–215V AC (adjustable)
• Voltage measurement accuracy: ±1%
• Current measurement accuracy: ±2%
• Power consumption: <2W
• Recovery delay time: 1–300s (adjustable)
• Rated frequency: 50/60Hz
• Operating temperature: -5°C to 40°C
• Short circuit breaking capacity: 6kA
• Number of poles: 2P (live and neutral)
• Display: digital LED (voltage, current, power)
• Installation: 35mm DIN rail
• Material: flame retardant PC
• Reset mode: automatic recovery

Final note

The CNC EL240326 is a robust, all-in-one protection device for single-phase circuits up to 63A. Its adjustable thresholds and automatic recovery make it a practical choice for both industrial and commercial applications where voltage and current stability are critical.