3-Phase Monitor with Trip & Restart Delays
The MODEL 18-480 3-Phase Monitor provides essential protection for industrial systems. This device detects critical conditions such as phase loss, low voltage, and phase reversal, safeguarding connected equipment from potential damage. Its automatic reset functionality streamlines operations following a fault condition, minimizing manual intervention. Users can configure precise operational parameters with an adjustable trip delay from 1 to 30 seconds and a restart delay from 1 to 300 seconds. Operating at 480VAC nominal, with an adjustment range of 380-480VAC, it integrates into various three-phase applications. The monitor features SPDT 10 amp output contacts, ensuring reliable control. With a robust design and UL Recognized approval, this unit is engineered for consistent performance in demanding environments, offering a practical solution for maintaining system uptime and integrity across a wide operating temperature range of -20° to +131° F.
3Ph Monitor
Specifications
| Detection | Phase loss, low voltage, phase reversal |
|---|---|
| Reset Type | Automatic reset |
| Warranty | Five year unconditional warranty |
| Nominal AC (phase to phase) | 480VAC |
| Adjustment range | 380-480VAC |
| Frequency | 60Hz |
| Power consumption | 3.7W |
| Transient protection | 2500VAC for 10ms |
| Repeat accuracy | ± 0.1% of set point (fixed conditions) |
| Trip delay | 1-30 sec. |
| Restart Delay | 1-300 sec. |
| Dead band | Approximately 2% |
| Output contacts | SPDT 10 amps at 240VAC resistive |
| Expected relay life (Mechanical) | 10 million operations |
| Expected relay life (Electrical) | 100,000 operations at rated load |
| Operating temperature | -20° to +131° F |
| Humidity tolerance | 0-97% w/o condensation |
| Terminal Torque | 3.5 in. lbs. maximum |
| Wire Type | Stranded or solid 14-28 AWG, 1/terminal |
| Enclosure material | NORYL plastic |
| Mounting | DIN Rail or Surface Mount |
| Low Current Option | Models ordered with suffix '/SG' will have silver with gold flash contacts (SPDT 5 amps at 120VAC resistive) |
| Agency Approval | UL Recognized (U.S. and Canada) |
| Usage Environment | For use in a Pollution Degree 2 Environment |
| Dimension Tolerance | ± 0.06" |
