3-Phase Monitor with Trip & Restart Delays
The MODEL 18 3-Phase Monitor (18-415-50) provides essential protection for industrial systems operating at 415VAC nominal. It detects critical conditions such as phase loss, low voltage, and phase reversal, safeguarding connected equipment from potential damage. Featuring an automatic reset function, operational continuity is maintained efficiently without requiring manual intervention after a fault clears. Users can configure precise trip delays from 1 to 30 seconds and restart delays from 1 to 300 seconds, allowing for tailored system integration and minimizing unnecessary downtime. Its robust design includes SPDT 10 amp output contacts rated at 240VAC resistive and a wide operating temperature range of -20° to +131° F. With a five-year unconditional warranty and UL Recognized approval, this monitor ensures reliable performance, extends equipment lifespan, and enhances system stability in demanding industrial environments.
3Ph Mon
Specifications
| Detection | Phase loss, low voltage, phase reversal |
|---|---|
| Reset Type | Automatic reset |
| Warranty | Five year unconditional warranty |
| Nominal AC (phase to phase) | 415VAC |
| Adjustment range | 340-440VAC |
| Frequency | 50Hz |
| Power consumption | 3.3W |
| 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" |
