Over & Under 3-Phase Monitor
The EX269 Over & Under 3-Phase Monitor provides essential protection for industrial systems. This device monitors high voltage, low voltage, phase loss, and phase reversal, safeguarding critical equipment from electrical anomalies. With a nominal AC voltage of 380VAC and adjustable upper (350-450V) and lower (300-400V) ranges, it offers precise control tailored to specific operational requirements. Its automatic reset function and 1-10 second adjustable response time ensure operational continuity and minimize downtime. The unit features robust SPDT 10A at 240VAC resistive output contacts, suitable for various control applications. Designed for reliability, it operates consistently across a -20° to +130° F temperature range and tolerates 0-97% humidity without condensation. Backed by a 5-year warranty and UL Listed & CSA Certified approvals, the EX269 delivers consistent performance and system integrity in demanding environments.
3Ph Power Mon
Specifications
| Monitored Conditions | High Voltage, Low Voltage, Phase Loss & Phase Reversal |
|---|---|
| Warranty | 5 Year Unconditional Warranty |
| Nominal AC Voltage (phase to phase) | 380VAC |
| Adjustable Range - Upper | 350-450V |
| Adjustable Range - Lower | 300-400V |
| Frequency | 50Hz |
| Power Consumption | 6W |
| Transient Protection | 2500VRMS for 10ms |
| Repeat Accuracy | ± 0.1% of set point (fixed conditions) |
| Response Time | Adjustable from 1-10 seconds ±5% |
| Reset Time | 0.25 seconds |
| Reset Type | Automatic |
| Dead Band | Approximately 2% |
| Output Contacts | SPDT 10A at 240VAC resistive |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 operations at rated load |
| Operating Temperature | -20° to +130° F |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | ABS Plastic |
| Mounting | Surface |
| Agency Approval | UL Listed & CSA Certified |





