Product Description
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| Product Information | Resources |
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| Specifications |
| Product Attribute | Attribute Value |
| Function | Phase Loss, Reversal, Low Voltage |
| Nominal AC Voltage (phase to phase) | 480 VAC |
| Adjust Range (VAC | 380-500 |
| Frequency | 60Hz |
| Power Consumption | 4.2W |
| Transient Protection | 2500V for 10ms |
| Repeat Accuracy | ± 0.1 % (fixed conditions) |
| Response Time | Adjustable 1 to 5 seconds |
| Reset Time | Adjustable 0.2 to 10 minutes |
| Reset Type | Automatic |
| Dead Band | Approximately 2% |
| Output Contacts | DPDT 3A@480/600VAC |
| Expected Relay Life | Mech: 10 million operations Elec: 100,000 operations@rated load |
| Operating Temp | -20o to+131oF |
| Humidity Tolerance | 0-97% w/o condensation |
| Enclosure Material | 20 gauge steel |
| Mounting | Surface |
| Weight | 17 oz. |
| Series Features |
| MODEL 259 3-Phase Monitor |
| Series Description: The Model 259 3-Phase Monitor is designed to protect individual 3-phase equipment and motors, or in conjunction with shunt trip breakers. When correct voltage and phase rotation is applied, an internal DPDT relay energizes. A fault condition (phase loss, phase reversal, or low voltage) drops out the relay and lights the LED failure indicator. The Model 259 will detect a phase loss condition even when regenerative voltage is present. The Model 259 may be used with Wye or Delta systems and requires no neutral connection. Standard operating ranges are available from 120 to 575 VAC |
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