Model 2501 3-Phase Monitor
The Model 2501 3-Phase Monitor provides essential protection for industrial systems. This device automatically detects critical conditions including phase loss, phase reversal, low voltage, and voltage unbalance, ensuring continuous operational integrity. Its heavy-duty output contacts are rated for 30 amps at 300VAC, offering robust control capabilities. With a wide range of nominal AC voltage configurations, from 120V to 600V, the 2501 integrates seamlessly into diverse electrical setups. The adjustable unbalance range of 2 to 10% and trip delay from 1 to 10 seconds allow for precise system calibration, adapting to specific application requirements. UL listing to U.S. and Canadian safety standards confirms its reliability and adherence to rigorous performance benchmarks. A 5-year unconditional warranty supports its long-term performance in demanding environments.
3Ph Monitor
Specifications
| Monitored Conditions | Phase Loss or Reversal, Low Voltage or Voltage Unbalance |
|---|---|
| Reset Type | Automatic |
| Output Contacts Feature | Heavy Duty |
| Agency Approval | UL Listed to U.S. and Canadian Safety Standards |
| Relay Operation | When the correct voltage and phase sequence is applied, the output relay will energize. An under voltage, phase reversal, phase unbalance, or phase loss condition will cause the output relay to de-energize. |
| Config: Model Versions | 2501-120, 2501-208, 2501-240, 2501-380, 2501-415, 2501-480, 2501-600 |
| Config: Nominal AC Voltage | 120, 208, 240, 380, 415, 480, 600 |
| Config: Adjustment Range | 84-114V, 146-198V, 168-229V, 266-361V, 290-394V, 336-456V, 420-570V |
| Frequency | 50/60Hz |
| Unbalance Adjustment Range | 2 to 10% per NEMA specifications |
| Trip Delay Adjustment Range | 1 to 10 seconds (1 sec increments) |
| Power Consumption | 4.5W per phase |
| Repeat Accuracy | ±1% of full scale |
| Reset Time | 150ms nominal |
| Dead Band | 2% of full scale |
| Output Contacts | SPDT 30 amps at 28VDC/300VAC 50/60Hz |
| Output Contacts (High Voltage) | 5 amps at 480/600VAC 50/60Hz 0.75 PF |
| Operating Temperature | -4° to +131° F |
| Humidity Tolerance | 0-97% without condensation |
| Enclosure Material | ABS plastic |
| Mounting | Surface |
| Warranty | 5-year Unconditional Warranty |
