3-Phase Monitor
The A252B 3-Phase Monitor provides essential protection for industrial systems. It detects critical conditions such as phase loss, low voltage, and phase reversal, safeguarding connected equipment from operational anomalies. This proactive monitoring capability helps prevent costly damage and ensures continuous system functionality. Featuring an automatic reset type and a rapid 0.05-second response time, the unit ensures minimal disruption and quick recovery from transient events. Its output contacts are rated at 5A at 115VAC resistive, offering reliable control for various applications. The robust design includes 2500V transient protection for 10ms, significantly enhancing system integrity against electrical disturbances. Operating effectively across a -20° to 131° F temperature range, this monitor maintains consistent performance in diverse industrial environments. This device is engineered for dependable, utility-driven performance in critical three-phase applications.
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Specifications
| Nominal AC Voltage | 208/240VAC |
|---|---|
| Adjustment Range | 160-240VAC |
| Frequency | 60Hz |
| Power Consumption | 0.25W |
| Transient Protection | 2500V for 10ms |
| Repeat Accuracy | 0.1% of set point (fixed conditions) |
| Response Time | 0.05 seconds |
| Reset Time | 0.05 seconds |
| Reset Type | Automatic |
| Dead Band | 2% |
| Output Contacts | 1 - SPDT & 1 - SPST (N.O.) |
| Contact Rating | 5A at 115VAC resistive |
| Expected Relay Life (Mechanical) | 10 million operations |
| Expected Relay Life (Electrical) | 100,000 at rated load |
| Operating Temperature | -20° to 131° F |
| Humidity Tolerance | 97% w/o condensation |
| Enclosure Material | ABS plastic |
| Mounting | 8-pin socket (*order separately) |
| Agency Approvals | UL Recognized (U.S. & Canadian) |
| Required Socket Part Number | 51X120 |
| Feature | Detects Phase Loss, Low Voltage and Phase Reversal |
