Model 2500 3-Phase Monitor
The Model 2500 3-Phase Monitor provides essential protection for industrial systems. This device continuously monitors for critical conditions including phase loss, phase reversal, low voltage, and voltage unbalance. Its automatic reset feature ensures seamless operation following a fault correction, minimizing downtime. Equipped with heavy-duty output contacts, the Model 2500 offers robust control capabilities. The unit is UL Listed to U.S. and Canadian safety standards, affirming its reliability in demanding environments. With an adjustable trip delay from 1 to 10 seconds and a repeat accuracy of ±1% of full scale, it delivers precise and consistent performance. Available in multiple nominal AC voltage configurations, including 120V to 600V, it adapts to diverse applications. Its humidity tolerance of 0-97% without condensation further enhances its utility in varied industrial settings. This monitor is a dependable component for maintaining system integrity.
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 not energize. An under voltage, phase reversal, phase unbalance or phase loss condition will cause the output relay to energize. Complete power loss will not cause a trip. |
| Config: Model Versions | 2500-120, 2500-208, 2500-240, 2500-380, 2500-415, 2500-480, 2500-600 |
| 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 |





