Protection Relays
Three-Phase Voltage and Phase Sequence Control Relay without Neutral (3P)
ModelVCR-03F
Product overview
The VTEKE VCR-03F is a voltage control relay designed to protect electrical systems and equipment against abnormal voltage and phase conditions in three-phase applications. It monitors the supply voltage and provides protection against overvoltage, undervoltage, insufficient supply voltage, phase failure, phase sequence error, and neutral absence.
Applications
- Designed for monitoring and protection applications. Suitable for:
- Three-phase motor protection systems
- Pumps and compressors
- Industrial machinery
- HVAC systems
- Control and automation panels
- Distribution panels
Key features
- Overvoltage and undervoltage monitoring
- Phase sequence error protection
- Phase failure protection
- Neutral absence detection
- Insufficient supply voltage detection
- Adjustable overvoltage and undervoltage thresholds
- Adjustable delay time
- Adjustable reset time
- LED status and fault indication
- DIN rail mounting
Specifications
Adjustable Settings
| Overvoltage U> | 400–510 V AC (L-L) |
|---|---|
| Undervoltage U< | 260–370 V AC (L-L) |
| Delay Time DT | 0.1–20 s |
| Reset Time RT | 0.1–20 s |
Electrical Characteristics
| Operating Voltage (Un) | 3 × 380 V AC (L-L) |
|---|---|
| Operating Frequency | 50/60 Hz |
| Operating Power | <4 VA |
| Overvoltage U> | 400–510 V AC (L-L) |
| Undervoltage U< | 260–370 V AC (L-L) |
| Contact Configuration | 1NO + 1NC (SPDT) |
Output Characteristics
| Contact Rating | 10 A / 28 V DC |
|---|---|
| Contact Rating | 7 A / 250 V AC |
| Contact Rating | 10 A / 125 V AC |
| Contact Rating | 12 A / 120 V AC |
Mechanical Characteristics
| Maximum Wire Size | 1.5 mm² |
|---|---|
| Mounting | DIN Rail |
| Protection Class | IP20 |
Full certificate register
CE conformitySample
Download certificate for CE conformityISO certificationSample
Download certificate for ISO certification
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